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Metformin

Glucophage · Fortamet · Riomet

Metabolic & Circadian HormonesApproved
MW
129.16g/mol
Formula
C4H11N5

Metformin is an oral antihyperglycemic agent primarily used in the management of type 2 diabetes, originally derived from the plant Galega officinalis. Researchers primarily study metformin for its effects on blood glucose regulation and its potential roles in cancer prevention and modulation of the gut microbiome. Key findings indicate that metformin may lower the incidence of certain cancers and is associated with reduced risks of frailty and adverse outcomes in diabetic patients. Additionally, studies suggest that metformin influences mitochondrial metabolism, which could be relevant for its therapeutic effects. Current research continues to explore its multifaceted roles, highlighting its clinical significance beyond diabetes management.

Overview

Übersicht

Metformin is a synthetic biguanide compound widely used in the management of type 2 diabetes mellitus. It is not an endogenous hormone but a pharmaceutical agent primarily produced in tablet form. Metformin belongs to the chemical class of biguanides and is known by several brand names, including Glucophage, Fortamet, and Riomet. Its primary physiological role is to lower blood glucose levels in individuals with type 2 diabetes by improving insulin sensitivity and reducing hepatic glucose production. Researchers have also explored its potential antineoplastic properties and effects on the gut microbiome. Metformin's mechanism of action is primarily through the activation of AMP-activated protein kinase (AMPK), which plays a crucial role in cellular energy homeostasis. This activation leads to decreased gluconeogenesis in the liver and increased glucose uptake in peripheral tissues. Pharmacokinetically, metformin has a relatively short plasma half-life of approximately 2.7 hours, but it exhibits a longer half-life in erythrocytes, around 23.4 hours. It is primarily excreted unchanged in the urine, highlighting the importance of renal function in its clearance. Clinically, metformin is a first-line treatment for type 2 diabetes and is approved by regulatory agencies worldwide. It is available in both immediate-release and extended-release formulations, with the latter offering improved gastrointestinal tolerability. Metformin is not associated with hypoglycemia when used as monotherapy, making it a favorable option for many patients.

Chemical profile

Chemische Struktur

Chemical structure of Metformin
FormelC4H11N5
Molekulargewicht129.16g/mol
CAS-Nummer657-24-9
PubChem CID4091
Mechanism

Wirkmechanismus

Metformin acts primarily by activating AMP-activated protein kinase (AMPK), a key regulator of energy balance at the cellular level. This activation results in decreased hepatic glucose production and increased insulin sensitivity, facilitating enhanced glucose uptake by muscle tissues.

Mechanism

Signalweg

Metformin primarily acts through the activation of AMP-activated protein kinase (AMPK), which plays a crucial role in cellular energy homeostasis. This activation leads to the inhibition of hepatic gluconeogenesis and enhancement of insulin sensitivity, primarily via modulation of the cAMP/PKA pathway and reduction of mitochondrial respiration, resulting in decreased ATP production and increased lactate levels. Although the exact molecular mechanisms remain partially elusive, metformin is also implicated in modulating gut microbiota and influencing various signaling pathways related to inflammation and cancer cell metabolism.

Half-Life & Pharmacokinetics

POOral

Plasma half-life ~2.7 hours; erythrocyte half-life ~23.4 hours

Metformin is excreted unchanged in the urine; renal function is crucial for its clearance. Extended-release formulations may alter pharmacokinetics.

Storage

Temperature

Store at room temperature (15-30C)

Light

Protect from light

Form

Tablets are stable under recommended storage conditions

Notes

Avoid excessive heat and moisture

Solubility

Löslichkeit

Metformin is highly soluble in water, which is relevant for its formulation in oral tablets.

Legal Status

🇩🇪DE

Prescription-only medication (verschreibungspflichtig). Not a controlled substance under BtMG.

🇺🇸US

FDA-approved for type 2 diabetes treatment. Prescription required. Not a controlled substance.

🇦🇺AU

Listed as a Schedule 4 (S4) prescription-only medicine by the TGA.

🇬🇧UK

Prescription-only medicine (POM) as classified by the MHRA.

Legal status information is provided for general reference only and may not reflect the most current regulatory changes. Always verify with official government sources before making any decisions.

Open Questions

Offene Forschungsfragen

Current evidence is limited regarding the precise molecular mechanisms underlying the antihyperglycemic and antineoplastic actions of metformin, particularly in relation to its effects on mitochondrial metabolism and the physiological relevance of these targets. Further research is needed to explore the pharmacokinetics of metformin in various tissues, especially in specific populations such as the elderly and those with renal impairment, to optimize dosing strategies and assess compliance. Additionally, larger randomized controlled trials are required to investigate the long-term effects of metformin on frailty and adverse outcomes in diabetic patients, particularly in frail populations where the protective effects may differ.

177 Research Publications

9,271

Total Citations

54

Human/RCT

4.3

Avg. Influence

2025

Latest

Sort
Filter
#01

Metformin alters the gut microbiome of individuals with treatment-naive type 2 diabetes, contributing to the therapeutic effects of the drug.

Wu Hao, et al. · Nature medicine · 2017

HumanInfluence60.0
1459
The study demonstrated that metformin alters the gut microbiome in individuals with treatment-naive type 2 diabetes, contributing to its therapeutic effects on glucose tolerance.

Key findings

  1. 01Metformin alters the gut microbiome in individuals with type 2 diabetes.
  2. 02These microbiome changes are linked to improved blood sugar control.
  3. 03Experiments with mice suggest that the altered gut bacteria contribute to metformin's effects.
#02

Metformin: historical overview.

Bailey Clifford J · Diabetologia · 2017

HumanInfluence38.0
930
Researchers observed that metformin has evolved from a less favored treatment option to the most prescribed glucose-lowering agent worldwide due to its effectiveness and safety profile in managing type 2 diabetes.

Key findings

  1. 01Metformin was rediscovered in the 1940s and first used for diabetes in 1957.
  2. 02It gained popularity after being shown to have cardiovascular benefits in the UK Prospective Diabetes Study.
  3. 03Metformin is now the most prescribed glucose-lowering medication worldwide.
#03

Benefits of Metformin in Attenuating the Hallmarks of Aging.

Kulkarni Ameya S, et al. · Cell metabolism · 2020

ReviewInfluence17.0
677
Researchers observed that metformin may attenuate the hallmarks of aging by improving nutrient sensing, enhancing autophagy, and protecting against macromolecular damage.

Key findings

  1. 01Metformin improves nutrient sensing and enhances cell communication.
  2. 02It protects against cellular damage and delays stem cell aging.
  3. 03Metformin shows potential as a treatment to target aging in humans.
#04

Metformin and the gastrointestinal tract.

McCreight Laura J, et al. · Diabetologia · 2016

ReviewInfluence12.0
677
Researchers observed that metformin's actions in the gut significantly influence its efficacy and side effects, suggesting that gut health is crucial for optimal metformin response.

Key findings

  1. 01Metformin affects glucose uptake and lactate production in the gut.
  2. 02A new delayed-release formulation shows similar effectiveness with fewer side effects.
  3. 03The gut's role is important in how individuals respond to metformin.
#05

Metformin: multi-faceted protection against cancer.

ReviewInfluence14.0
301
Researchers observed that metformin may exert cancer chemopreventive effects by suppressing processes that initiate carcinogenesis, indicating its potential role in oncology therapeutics.
#06

Metformin: Is it a drug for all reasons and diseases?

Triggle Chris R, et al. · Metabolism: clinical and experimental · 2022

Meta-AnalysisInfluence7.0
243
The review concluded that metformin's primary clinical benefits stem from its insulin-sensitizing effects, which may also contribute to a reduced risk of various diseases.

Key findings

  1. 01Metformin is primarily effective for type 2 diabetes but shows promise for other diseases.
  2. 02It may help reduce cancer incidence and protect against neurodegenerative diseases.
  3. 03The drug's benefits may extend beyond blood sugar control, enhancing overall health.
#07

Understanding and overcoming metformin gastrointestinal intolerance.

Bonnet Fabrice & Scheen André · Diabetes, obesity & metabolism · 2017

ReviewInfluence8.0
242
Researchers observed that gastrointestinal intolerance is a common issue with metformin, affecting its tolerance and adherence among patients with type 2 diabetes.

Key findings

  1. 01Gastrointestinal side effects are common with metformin, affecting patient adherence.
  2. 02Starting with a low dose and increasing slowly may reduce side effects.
  3. 03Alternative therapies should be considered if metformin is not tolerated.
#08

Metformin as Anti-Aging Therapy: Is It for Everyone?

ReviewInfluence4.0
229
Researchers observed that while metformin may retard aging and reduce aging-related diseases, its benefits vary among individuals, necessitating further understanding.
#09

Lactic acidosis induced by metformin: incidence, management and prevention.

ReviewInfluence4.0
196
Researchers concluded that while lactic acidosis is a rare event associated with metformin, its direct mortality risk is negligible, suggesting the need for careful patient management.
#10

The effect of novel promoter variants in MATE1 and MATE2 on the pharmacokinetics and pharmacodynamics of metformin.

HumanInfluence9.0
186
Researchers observed that promoter variants in MATE1 and MATE2 significantly influence the pharmacokinetics and glucose-lowering response to metformin in healthy volunteers and diabetic patients.

Clinical Trials (312)

Preclinical
Phase I
Phase II
Phase III
Approved

312

Total Trials

168,694

Total Enrolled

Antidiabetic Medications and Risk of Cancer

NCT07628556COMPLETED
Sponsor

University of Pecs

Enrollment

74,799

Started

2025

Primary outcome

Overall cancer risk

Cancer

GLucobay M OBservation Study for Efficacy and Safety in Treatment of Type-2 Diabetes Patients

NCT01219582COMPLETED
Sponsor

Bayer

Enrollment

9,364

Started

2010

Primary outcome

Change in fasting blood glucose levels

Type 2 Diabetes

An Observational Study of Type II Diabetics Treated With Dual Therapy With or Without Sitagliptin (Januvia®/Xelevia®, MK-0431-201)

NCT01357135COMPLETED
Sponsor

Merck Sharp & Dohme LLC

Enrollment

3,453

Started

2009

Primary outcome

Median Duration (in Months) of Initial Dual Therapy

Type 2 Diabetes Mellitus

Metformin Hydrochloride and Empagliflozin Tablets in the Treatment of Type 2 Diabetes

NCT07003191ACTIVE_NOT_RECRUITING
Sponsor

Sun Yat-sen University

Enrollment

2,600

Started

2023

Primary outcome

6-month clinical glycemic control rate

Type 2 Diabetes

Gut Microbiomes in Patients With Metabolic Syndrome

Sponsor

Chinese University of Hong Kong

Enrollment

1,000

Started

2017

Primary outcome

Change in waist circumference at four weeks

Metabolic Syndrome

The Pre-Diabetes Interventions and Continued Tracking to Ease-out Diabetes (Pre-DICTED) Program

NCT03503942COMPLETED
Sponsor

Singapore General Hospital

Enrollment

751

Started

2017

Primary outcome

Diabetes incidence

Pre-diabetes

An Open Label, Multi-centre, Non-interventional Post-marketing Surveillance to Monitor the Safety and/or Efficacy of AVANDAMET Between June 2004 and January 2010

NCT01294553COMPLETED
Sponsor

GlaxoSmithKline

Enrollment

717

Started

2004

Primary outcome

Number of Participants With an Adverse Event

Diabetes Mellitus, Type 2

Pre-diabetes in Subject With Impaired Fasting Glucose (IFG) and Impaired Glucose Tolerance (IGT)

NCT02969798RECRUITING
Sponsor

The University of Texas Health Science Center at San Antonio

Enrollment

700

Started

2014

Primary outcome

Beta cell function

Diabetes Mellitus, Type 2Impaired Glucose Tolerance (IGT)Impaired Fasting Glucose (IFG)

Studying Changes in Breast Density in Patients With Early-Stage Breast Cancer Treated With Metformin Hydrochloride or Placebo on CAN-NCIC-MA.32

Sponsor

Cancer and Leukemia Group B

Enrollment

458

Started

2012

Primary outcome

Change in percent mammographic breast density in contralateral (unaffected) breast from baseline to 1 year using two-sample t-test or Wilcoxon rank-sum test

Breast Cancer

CRD vs. Met in Patients With Obese PCOS Infertility

Sponsor

Shanghai First Maternity and Infant Hospital

Enrollment

406

Started

2023

Primary outcome

Live birth during the period of ovulation induction

Polycystic Ovary Syndrome

Efficacy and Safety of Henagliflozin, Retagliptin, and Metformin Extended-Release Tablets in Chinese Patients With Type 2 Diabetes Mellitus

NCT07441187NOT_YET_RECRUITING
Sponsor

Xinhua Hospital, Shanghai Jiao Tong University School of Medicine

Enrollment

300

Started

2026

Primary outcome

Change in HbA1c from baseline to Week 24.

T2DM (Type 2 Diabetes Mellitus)

Effects of GLP-1RA on Body Weight, Metabolism and Fat Distribution in Overweight/Obese Patients With Type 2 Diabetes Mellitus

Sponsor

RenJi Hospital

Enrollment

300

Started

2023

Primary outcome

Blood glucose

MetforminObesity, AbdominalDiabetes Mellitus, Type 2Abdominal FatNon-Alcoholic Fatty Liver DiseaseMetabolism Disorder, GlucoseMetabolism Disorder, Lipid

Clinical Evaluation of Fenugreek Seed Extract, a Nutraceutical in Patients With Type- 2 Diabetes

NCT02693392COMPLETED
Sponsor

All India Institute of Medical Sciences, Bhubaneswar

Enrollment

200

Started

2016

Primary outcome

Glycosylated hemoglobin (HbA1c)

Type-2 Diabetes Mellitus

N-acetyl Cysteine and Clomiphene Citrate or Metformin and Clomiphene Citrate for Women With CC Resistant Polycystic Ovary Syndrome (PCOS).

NCT01008046COMPLETED
Sponsor

Mansoura University

Enrollment

192

Started

2007

Primary outcome

Ovulation rate

Polycystic Ovary Syndrome

Late Metabolic Effects of Metformin Therapy in Gestational Diabetes

NCT02417090COMPLETED
Sponsor

Turku University Hospital

Enrollment

173

Started

2015

Primary outcome

Metabolic late effects

Gestational Diabetes

Comparative Effects of Metformin and Insulin on Stereological Studies and Immunohistochemistry of Placenta

NCT04907708COMPLETED
Sponsor

University of Karachi

Enrollment

156

Started

2018

Primary outcome

Mean morphometric diffusion capacity for oxygen (MMDC) in placental tissues

Diabetes Mellitus Arising in Pregnancy, Insulin-RequiringDiabetes Mellitus in Pregnancy

Myoinositol vs. Metformin for Polycystic Ovarian Syndrome (PCOS): Impact on Metabolic Health and Fertility

NCT07058675COMPLETED
Sponsor

Benha University

Enrollment

156

Started

2024

Primary outcome

Success Rate of Treatment Regimens in Restoring Menstrual Regularity and/or Achieving Pregnancy

PCOS

Glycemic And Blood Pressure Control In Type 2 Diabetes, In A Primary Care Unit: A Staged Management Strategy

Sponsor

Hospital de Clinicas de Porto Alegre

Enrollment

124

Started

2006

Primary outcome

Glycated hemoglobin A1c

Diabetes MellitusArterial Hypertension

Improving Cardiovascular Disease Diagnosis and Treatment in Kazakhstan Using Metabolic Correction With GLP-1 Drugs

NCT07303556ACTIVE_NOT_RECRUITING
Sponsor

Nazarbayev University

Enrollment

120

Started

2024

Primary outcome

Change in NT-proBNP levels from baseline to Week 24

Heart FailureDiabete Type 2Arterial Hypertension

Metformin and Molecular Aging in Prediabetes

NCT07302932COMPLETED
Sponsor

Diabetes Foundation, India

Enrollment

112

Started

2023

Primary outcome

Leukocyte telomerase length

Metformin, Prediabetes

Serum Biomarker Levels Improvement in Poly Cystic Ovarian Syndrome: Impact of Metformin Compared to Healthy Controls

NCT06479434COMPLETED
Sponsor

Aga Khan University

Enrollment

110

Started

2024

Primary outcome

Change in hormonal profile and menstural Cycle after Metformin use

Polycystic Ovary SyndromeInsulin Resistance

Pyridoxine Effect on the Blood Glucose Level in Type 2 Diabetic Patients

NCT05918068COMPLETED
Sponsor

Al-Rasheed University College

Enrollment

108

Started

2022

Primary outcome

Fasting plasma glucose (FPG).

Diabetes Mellitus, Type 2

Metformin in Overweight Type 2 Diabetes Mellitus

NCT00922194COMPLETED
Sponsor

Era's Lucknow Medical College

Enrollment

102

Started

2006

Primary outcome

Change in Weight From Baseline at 12 Months or More

ObesityType 2 Diabetes Mellitus

Metformin Reduce the Relapse Rate on Patients With B-cell Precursor (Ph+ Negative) Acute Lymphoblastic Leukemia

NCT03118128COMPLETED
Sponsor

Hospital General de Mexico

Enrollment

102

Started

2015

Primary outcome

Effect of Metformin on first line treatment Refractoriness in high risk failure ALL patients

Acute Lymphoblastic Leukemia

Comparison of the Therapeutic Effects of VR and VR + Metformin in the Treatment of Cesarean Section Scar Defect

NCT05205317RECRUITING
Sponsor

Xinhua Hospital, Shanghai Jiao Tong University School of Medicine

Enrollment

100

Started

2023

Primary outcome

Duration of menstruation (day)

Defect

Effects of Metformin and Oral Hormonal Contraceptive in Adolescents With Polycystic Ovary Syndrome

Sponsor

Federal University of São Paulo

Enrollment

90

Started

2011

Primary outcome

serum melatonin

Polycystic Ovary Syndrome

Effect of Short-Term Beta-Cell Rest in Adolescents and Young Adults With Type 2 Diabetes Mellitus

NCT00445627COMPLETED
Sponsor

National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

Enrollment

82

Started

2007

Primary outcome

evaluate phenotype of T2DM

ObesityOverweightDiabetes Mellitus, Type 2

Metformin Treatment on Cognitive Impairment of Schizophrenia Co-morbid Metabolic Syndrome

Sponsor

Central South University

Enrollment

80

Started

2017

Primary outcome

Cognitive improvement will be assessed using the MATRICS Consensus Cognitive Battery (MCCB) composite score

Schizophrenia

Effect of Lifestyle and/or Metformin Intervention on Pregnancy Outcome, A Pilot Randomized Controlled Trial

NCT03898037COMPLETED
Sponsor

Reproductive & Genetic Hospital of CITIC-Xiangya

Enrollment

80

Started

2019

Primary outcome

recruitment rate

Infertility, FemaleObesityInsulin Resistance

Variable Effects of Anti-diabetics on Stress Hyperglycemia Ratio

NCT05822674COMPLETED
Sponsor

University of Diyala

Enrollment

80

Started

2022

Primary outcome

Stress hyperglycemia Ratio

Type 2 Diabetes

Efficacy and Safety Comparison of Cofrogliptin Add-on Versus Metformin Dose-escalation in Type 2 Diabetes Patients Inadequately Controlled With SGLT-2 Inhibitors Plus Low-Dose Metformin:A Multicenter, Open-Label Trial

NCT06863532RECRUITING
Sponsor

Second Affiliated Hospital, Zhejiang University, School of Medicine

Enrollment

80

Started

2025

Primary outcome

the change in glycated hemoglobin (HbA1c) levels

Type 2 Diabetes

Comparison of Probiotics, Metformin & Their Combination Therapy in the Treatment of PCOS

NCT04009603COMPLETED
Sponsor

Ziauddin University

Enrollment

78

Started

2018

Primary outcome

Biochemical parameter:

Polycystic Ovary Syndrome

Effect of Metformin Use on Mortality in Diabetic and Non Diabetic Patients With Sepsis and Septic Shock.

Sponsor

Assiut University

Enrollment

75

Started

2022

Primary outcome

28 day Mortality.

Septic Shock

Acute Portal Pressure Reduction by Metformin and Carvedilol Compared to Carvedilol Alone in Cirrhosis.

NCT07108075RECRUITING
Sponsor

Institute of Liver and Biliary Sciences, India

Enrollment

72

Started

2025

Primary outcome

HVPG response (decrease by ≥ 20 % from baseline or < 12 mmHg).

Liver Cirrhosis

The Effect of Henagliflozin and Metformin on Myocardial Tissue-level Characteristics

Sponsor

RenJi Hospital

Enrollment

64

Started

2023

Primary outcome

Extra-cellular volume fraction

ObesityType 2 DiabetesSodium-glucose Co-transporter-2 InhibitorMyocardial FibrosisMagnetic Resonance Imaging

Metformin in Pregnancy in Women With Polycystic Ovary Syndrome

NCT01594697COMPLETED
Sponsor

Catholic University of the Sacred Heart

Enrollment

60

Primary outcome

incidence of gestational diabetes

Polycystic Ovary Syndrome

Effect of Dosage of Metformin on Menstruation and Lipid Profile in Women With Polycystic Ovary Syndrome

NCT01474967COMPLETED
Sponsor

Hormozgan University of Medical Sciences

Enrollment

50

Started

2010

Primary outcome

Lipid profile

Polycystic Ovary Syndrome

Microbiome and Polycystic Ovaries

NCT04836910NOT_YET_RECRUITING
Sponsor

Sheba Medical Center

Enrollment

40

Started

2025

Primary outcome

Vaginal and gut microbiota composition before and after intervention recommended and in comparison to women without PCOS.

Polycystic Ovary SyndromeMicrobial Colonization

Clinical and Biochemical Evaluation of 1% Metformin in Non-surgical Treatment of Periodontitis

NCT06204185COMPLETED
Sponsor

Ain Shams University

Enrollment

40

Started

2019

Primary outcome

RANKL and Osteoprotegrin levels in Gingival Crevicular Fluid before & after application of metformin as an adjunctive therapy to non surgical periodontal treatment of Stage III periodontitis.

Periodontitis

Cortisol Regulation in Polycystic Ovary Syndrome (PCOS)

NCT00694759COMPLETED
Sponsor

Oregon Health and Science University

Enrollment

37

Started

2006

Primary outcome

The comparison of body surface area adjusted cortisol production rate (CPR/BSA) before insulin sensitizing therapy in women with PCOS.

Polycystic Ovary Syndrome

Metformin Versus Insulin in Pregnant Women With Type 2 Diabetes

NCT00678080COMPLETED
Sponsor

The University of Texas Health Science Center, Houston

Enrollment

25

Started

2008

Primary outcome

The Number of Participants Who Achieved a Hemoglobin A1C <7%

Pregnancy Complications

Metformin for Weight Loss in Schizophrenia

NCT01177709TERMINATED
Sponsor

Nathan Kline Institute for Psychiatric Research

Enrollment

12

Started

2008

Primary outcome

Weight (wt) in Pounds (Lbs)..

SchizophreniaObesity

Effect of Metformin on Exercise-induced Lipolysis

NCT03189732COMPLETED
Sponsor

Charles University, Czech Republic

Enrollment

10

Started

2015

Primary outcome

Change in adipose tissue lipolysis in response to exercise

Diabetes Mellitus, Type 2

The Impact of Gall Bladder Emptying and Bile Acids on the Human GLP-1-secretion

NCT01656057COMPLETED
Sponsor

Filip Krag Knop

Enrollment

10

Started

2012

Primary outcome

GLP-1 response as incremental area under curve (iAUC)

To Assess the Impact of Bile Acids on Human Glukagon-like-peptide-1 Secretion

A Pilot Study: Metformin Therapy in Heart Failure Patients With Early Diabetes or at High Risk of Developing Diabetes (Pre-Diabetes)

NCT01573949COMPLETED
Sponsor

University of California, Los Angeles

Enrollment

7

Started

2011

Primary outcome

Health-Related Quality of Life (HRQoL)

DiabetesHeart Failure

Simvastatin and Metformin Therapy in PCOS Women. Prospective Randomised Trial.

Sponsor

Poznan University of Medical Sciences

Started

2005

Primary outcome

Serum testosterone

Polycystic Ovary Syndrome

Investigation of Metformin in Pre-Diabetes on Atherosclerotic Cardiovascular OuTcomes

NCT02915198Phase 4RECRUITING
Sponsor

VA Office of Research and Development

Enrollment

7,410

Started

2023

Primary outcome

Time in days to death, non-fatal myocardial infarction, stroke, hospitalization for unstable angina, or symptom-driven coronary revascularization

Prediabetic StateAtherosclerosisMetformin

DECIDE: A Comparative Effectiveness Trial of Metformin Versus Insulin for the Treatment of Gestational Diabetes

NCT06445946Phase 4RECRUITING
Sponsor

Ohio State University

Enrollment

1,572

Started

2024

Primary outcome

A neonatal composite adverse outcome of large-for-gestational-age (LGA) birthweight, hypoglycemia, hyperbilirubinemia, and/or death.

Gestational Diabetes MellitusPregnancy, High Risk

Metformin for Overweight & OBese ChILdren and Adolescents With BDS Treated With SGAs

NCT02515773Phase 4COMPLETED
Sponsor

Melissa Delbello

Enrollment

1,565

Started

2015

Primary outcome

Change in BMI Z-score From Baseline to Month 6 in ITT Sample

Bipolar Disorder

A Type 2 Diabetes Study of the Longer-Term Glycemic Effect of AVANDAMET vs. Metformin

NCT00386100Phase 4COMPLETED
Sponsor

GlaxoSmithKline

Enrollment

688

Started

2006

Primary outcome

Change From Baseline in HbA1c at Week 80

Diabetes Mellitus, Type 2

AVANDAMET Versus Metformin For Type 2 Diabetes Mellitus

NCT00241605Phase 4COMPLETED
Sponsor

GlaxoSmithKline

Enrollment

600

Started

2003

Primary outcome

Change from baseline in HbA1c at week 48.

Diabetes Mellitus, Type 2

Durable Effect of Imeglimin on the Glycemic Control in Patients With Type 2 Diabetes Mellitus

NCT05366868Phase 4ACTIVE_NOT_RECRUITING
Sponsor

National Center for Global Health and Medicine, Japan

Enrollment

567

Started

2022

Primary outcome

Time from study drug initiation (Week 0) to detection of two consecutive HbA1c levels of 7.0% or higher by laboratory tests after Week 16.

Diabetes Mellitus, Type 2

Effects of Sitagliptin on Type 2 Diabetes Mellitus Patients on Treatment With Metformin and Insulin

NCT01341717Phase 4COMPLETED
Sponsor

Jothydev's Diabetes and Research Centre

Enrollment

440

Started

2012

Primary outcome

Reduction in HbA1c from baseline

Diabetes Mellitus, Type 2

Effect of Different Insulin Administrations, All in Combination With Metformin, on Glycaemic Control in Subjects With Type 2 Diabetes Inadequately Controlled by Oral Anti-diabetic Drugs

NCT01068652Phase 4COMPLETED
Sponsor

Novo Nordisk A/S

Enrollment

403

Started

2010

Primary outcome

Glycosylated Haemoglobin (HbA1c)

DiabetesDiabetes Mellitus, Type 2

Metformin Hydrochloride Sustained-release Tablets (Ⅲ) in Patients With Type 2 Diabetes Mellitus Complicated With Coronary Heart Disease

NCT06932874Phase 4RECRUITING
Sponsor

China National Center for Cardiovascular Diseases

Enrollment

356

Started

2025

Primary outcome

Glycated hemoglobin (HbA1c)

Atherosclerotic Heart DiseaseType 2 Diabetes

Sitagliptin Therapy in Hospitalized Patients With Type 2 Diabetes

NCT01845831Phase 4COMPLETED
Sponsor

Emory University

Enrollment

292

Started

2013

Primary outcome

Mean Blood Glucose Concentration After First Day of Treatment

Type 2 Diabetes

Efficacy of Empagliflozin and Pioglitazone in Diabetic Patients With NAFLD

NCT05942963Phase 4UNKNOWN
Sponsor

Jinnah Postgraduate Medical Centre

Enrollment

240

Started

2023

Primary outcome

A change in liver steatosis will be assessed through fibro CAP score.

Non-Alcoholic Fatty Liver DiseaseType2diabetes

A Phase IV Clinical Trial to Compare the Efficacy and Safety of Metformin+Sodium-Glucose Cotransporter 2 Inhibitor(SGLT2-i)+Thiazolidinedione (TZD) in Patients With Type 2 Diabetes

NCT06972732Phase 4RECRUITING
Sponsor

Boryung Pharmaceutical Co., Ltd

Enrollment

204

Started

2025

Primary outcome

HbA1c (%) change at 24 weeks compared to the baseline (Visit 2)

Type 2 Diabetes

The Efficacy and Safety of Empagliflozin - Linagliptin and Empagliflozin- Metformin Therapy in Reduction of Body Weight in Type 2 Diabetic Patients .

NCT07247656Phase 4COMPLETED
Sponsor

Bahria University

Enrollment

200

Started

2022

Primary outcome

Overall improvement in Fasting Blood Glucose

Diabete Mellitus

Pegylated-Interferon and Ribavirin Plus Metformin in the Treatment of Chronic HCV Infection and Insulin Resistance

NCT00370617Phase 4UNKNOWN
Sponsor

University of Turin, Italy

Enrollment

200

Started

2006

Primary outcome

Combined end-point of non-detectable serum HCV-RNA (<100 copies/mL) and

Chronic Hepatitis CInsulin Resistance

Metformin Combined With Secukinumab for Moderate-to-Severe Plaque Psoriasis in Overweight or Obese Chinese Patients

NCT07485764Phase 4NOT_YET_RECRUITING
Sponsor

Union Hospital, Tongji Medical College, Huazhong University of Science and Technology

Enrollment

186

Started

2026

Primary outcome

Proportion of Participants Achieving PASI75 at Week 24

PsoriasisPlaque PsoriasisModerate-to-severe Plaque PsoriasisOverweight , Obesity

Glycemic Variability of Combination Therapies in T2DM

NCT07442006Phase 4RECRUITING
Sponsor

JW Pharmaceutical

Enrollment

178

Started

2025

Primary outcome

Mean change in Mean Amplitude of Glycemic Excursion (MAGE) from baseline to week 12

Type 2 Diabetes Mellitus (T2DM)

The Effect of Simple Basal Insulin Titration, Metformin Plus Liraglutide for Type 2 Diabetes With Very Elevated HbA1c - The SIMPLE Study

NCT01966978Phase 4COMPLETED
Sponsor

University of Texas Southwestern Medical Center

Enrollment

157

Started

2014

Primary outcome

Mean Change From Randomization in A1c at Week 26

Diabetes Mellitus, Type 2Diabetes

Study of Efficacy and Safety of Vildagliptin as add-on Insulin Therapy in T2DM Patients

NCT02002221Phase 4COMPLETED
Sponsor

Novartis Pharmaceuticals

Enrollment

156

Started

2013

Primary outcome

Change From Baseline in Glycosylated Hemoglobin (HbA1c) at 12 Weeks Between Treatment Groups

Type 2 Diabetes Mellitus (T2DM)

Metformin in Assisted Reproduction-MET-AR-study

NCT00159575Phase 4TERMINATED
Sponsor

Norwegian University of Science and Technology

Enrollment

150

Started

2005

Primary outcome

To investigate whether four months of Metformin treatment before IVF (in-vitro-fertilisation) or ICSI (intra-cytoplasmic sperm injection) will increase clinical pregnancy rate in normal weight PCOS-women

Polycystic Ovary Syndrome

Pioglitazone Versus Metformin in Type 2 Diabetes

NCT00815399Phase 4COMPLETED
Sponsor

University of Campania Luigi Vanvitelli

Enrollment

150

Started

2007

Primary outcome

Circulating Endothelial microparticles

Type 2 Diabetes

Effect of Adding Metformin to Insulin in Uncontrolled Diabetic Patients During the 3rd Trimester of Pregnancy

NCT05479214Phase 4COMPLETED
Sponsor

Cairo University

Enrollment

150

Started

2022

Primary outcome

Maternal glycemic control 3 months.

Diabetes Mellitus Pregnancy

Metformin Efficacy and Safety for Gastric Intestinal Metaplasia

NCT05288153Phase 4COMPLETED
Sponsor

Xijing Hospital of Digestive Diseases

Enrollment

140

Started

2022

Primary outcome

Rate of reversal and progression of gastric intestinal metaplasia

Gastric Intestinal Metaplasia

A Study to Evaluate the Effect of add-on Pioglitazone or Dapagliflozin in Participants With Type 2 Diabetes Mellitus Inadequately Controlled by DPP-4 Inhibitor and Metformin Therapy

NCT03499704Phase 4COMPLETED
Sponsor

Celltrion Pharm, Inc.

Enrollment

133

Started

2020

Primary outcome

Mean Change from Baseline in HbA1c at Week 26

Diabetes Mellitus, Type 2

Metformin Versus Vildagliptin for Diabetic Hypertensive Patients

NCT03253562Phase 4COMPLETED
Sponsor

MTI University

Enrollment

120

Started

2017

Primary outcome

benefit of reducing hypertension in diabetic hypertensive patients

Reducing the Elevated Blood Pressure for Diabetic Hypertensive Patients

A Study Between Dapagliflozin and Empagliflozin Effect on NAFLD in Patients With Type 2 Diabetes.

NCT07363707Phase 4COMPLETED
Sponsor

Beni-Suef University

Enrollment

108

Started

2023

Primary outcome

Fibro scan, as well as the changes in FIB4 score and Full lipid profile (total cholesterol, LDL, HDL, VLDL, and triglyceride).

NAFLD (Nonalcoholic Fatty Liver Disease)

Assessment of Metformin for Restoration of Immune Homeostasis in HIV+ and HIV- Individuals With a History of Injection Drug Use

NCT06829238Phase 4RECRUITING
Sponsor

University of Alabama at Birmingham

Enrollment

100

Started

2025

Primary outcome

Change in Serum C-reactive Protein (CRP)

Systemic InflammationImmune DysregulationInjection Drug UseHIV

Effect of Metformin in Patients With Type-1 Diabetes With Inadequate Glycaemic Control by Insulin and Diet

NCT00118937Phase 4COMPLETED
Sponsor

Steno Diabetes Center Copenhagen

Enrollment

100

Started

2003

Primary outcome

HbA1c - difference between final visit and baseline.

Diabetes Mellitus, Type 1

Metformin for Antipsychotic-induced Weight Gain in Adults With Intellectual Disability

NCT05744479Phase 4RECRUITING
Sponsor

Centre for Addiction and Mental Health

Enrollment

100

Started

2023

Primary outcome

Individual's percentage change in body weight

Intellectual DisabilityDevelopmental DisabilityObesity

The Hypotensive Effect of Metformin in Hypertensive Patients.

NCT02072382Phase 4UNKNOWN
Sponsor

Hospital de Clinicas de Porto Alegre

Enrollment

92

Started

2013

Primary outcome

The effect of metformin on blood pressure

Hypertension

Effects of Incretin on the Blood Pressure and Lipid in Patients With Overweight or Obese Diabetes

NCT02503943Phase 4UNKNOWN
Sponsor

Third Affiliated Hospital of Third Military Medical University

Enrollment

90

Started

2015

Primary outcome

Blood Pressure change

Type 2 DiabetesOverweightObesityMasked Hypertension

the Efficacy of Acarbose and Metformin on Blood Glucose Fluctuation When Combined With Premix Insulin

NCT02438397Phase 4UNKNOWN
Sponsor

Shanghai 6th People's Hospital

Enrollment

80

Started

2014

Primary outcome

MAGE: mean amplitude of glycemic excursion/MODD: mean of daily differences

Type 2 Diabetes

Metformin vs Metformin Combined With GLP-1RA (Glucagon-like Peptide 1 Receptor Agonist) on Overweight/Obese PCOS Patients

NCT04029272Phase 4UNKNOWN
Sponsor

Peking Union Medical College Hospital

Enrollment

80

Started

2019

Primary outcome

Change in body weight

Polycystic Ovary Syndrome

Efficacy of Metformin as add-on Therapy in Non-Diabetic Heart Failure Patients

NCT05177588Phase 4COMPLETED
Sponsor

Cairo University

Enrollment

70

Started

2021

Primary outcome

Change in total antioxidant capacity (relative and absolute)

Heart Failure

Vildagliptin Versus Liraglutide - Patient Preference After Receiving Both Medications

NCT01518101Phase 4COMPLETED
Sponsor

Novartis Pharmaceuticals

Enrollment

62

Started

2012

Primary outcome

Proportion of patients preferring each treatment regimen

Type 2 Diabetes

Metabolic Analysis for Treatment Choice in Gestational Diabetes Mellitus

NCT03029702Phase 4COMPLETED
Sponsor

Maisa N. Feghali, MD

Enrollment

54

Started

2018

Primary outcome

Proportion of Women Who Are Eligible, Screened, Enroll and Remain in the Study

Gestational DiabetesDiabetes, GestationalPregnancy in Diabetes

Efficacy of Canagliflozin Versus Metformin in Women With Polycystic Ovary Syndrome

NCT06256289Phase 4UNKNOWN
Sponsor

Ping Li,MD

Enrollment

50

Started

2024

Primary outcome

liver steatosis index CAP (Controlled Attenuation Parameter) measured by FibroScan

Polycystic Ovary SyndromeNon-Alcoholic Fatty Liver Disease

The Vascular Effects of Exenatide Versus Metformin in Patients With Pre-Diabetes

NCT00546728Phase 4COMPLETED
Sponsor

St. Paul Heart Clinic

Enrollment

50

Started

2007

Primary outcome

Change in Reactive Hyperemic Index Over the 3-month Treatment Period

Impaired Glucose Tolerance

The Effect of Metformin in Overweight Patients With Dysregulated Type 1 Diabetes Mellitus

NCT00145379Phase 4COMPLETED
Sponsor

Odense University Hospital

Enrollment

42

Started

2003

Primary outcome

HbA1c after the two intervention periods

Type 1 Diabetes Mellitus

Metformin in Postmenopausal Women With Metabolic Syndrome

NCT01342744Phase 4UNKNOWN
Sponsor

Mahidol University

Enrollment

40

Started

2011

Primary outcome

Cardiovascular risk factors

Metabolic Syndrome

Study About Effect of Saxagliptin on Circulating Endothelial Progenitor Cells and Endothelial Function in Newly Diagnosed Type 2 Diabetic Patients

NCT02920801Phase 4COMPLETED
Sponsor

Shanghai Zhongshan Hospital

Enrollment

31

Started

2014

Primary outcome

endothelial progenitor cell

Type 2 Diabetes Mellitus

Metformin Experience on Minimal Hepatic Encephalopathy

NCT02470546Phase 4UNKNOWN
Sponsor

Fundación Pública Andaluza para la gestión de la Investigación en Sevilla

Enrollment

30

Started

2015

Primary outcome

Number of patients with Minimal hepatic encephalopathy

Liver CirrhosisHepatic Encephalopathy

Cancer Chemoprevention by Metformin Hydrochloride Compared to Placebo in Oral Potentially Malignant Lesions

NCT03684707Phase 4UNKNOWN
Sponsor

Ain Shams University

Enrollment

30

Started

2018

Primary outcome

Evaluate lesion size in millimeters

Oral Cancer

Metformin to Prevent Metabolic Complications in Glucocorticoid Excess

NCT01187849Phase 4COMPLETED
Sponsor

University Hospital, Basel, Switzerland

Enrollment

29

Started

2010

Primary outcome

2 hours glucose level after a standardized 75g oral glucose tolerance test (OGTT)

Patients With Glucocorticoid Treatment

Tolerance & Responsiveness Improvement for Metformin (TRIM)

NCT03670043Phase 4COMPLETED
Sponsor

West Side Institute for Science and Education

Enrollment

29

Started

2019

Primary outcome

Birmingham Irritable Bowel Syndrome (IBS) Symptom Questionnaire

Type2 Diabetes Mellitus

The Metformin-FMD Trial

NCT01610401Phase 4COMPLETED
Sponsor

Radboud University Medical Center

Enrollment

26

Started

2012

Primary outcome

Metformin-FMD trial: The effect of pretreatment with metformin on FMD of the brachial artery after forearm ischemia and reperfusion.

Ischemia Reperfusion InjuryEndothelial Function

Relationship Between Metformin Treatment, Anemia, and Erythropoietin Levels in Women With Polycystic Ovary Syndrome in Jordan

NCT07759674Phase 4COMPLETED
Sponsor

Jerash Private University

Enrollment

25

Started

2023

Primary outcome

Change in insulin resistance (HOMA-IR)

Polycystic Ovary Syndrome (PCOS) WomenInsulin Resistance Syndrome

Drug Transporter Interaction Study PHENTRA_2015_KPUK

NCT02743260Phase 4COMPLETED
Sponsor

University of Cologne

Enrollment

24

Started

2016

Primary outcome

organic anionic transporter polypeptide 1B1 (OATP1B1): Clearance over bioavailability (CL/F) of pitavastatin

Healthy

Comparison of Optimal Antipsychotic Treatments for Adults With Schizophrenia

NCT00802100Phase 4COMPLETED
Sponsor

National Institute of Mental Health (NIMH)

Enrollment

21

Started

2008

Primary outcome

Feasibility of Randomizing a Cohort of Participants Meeting the Inclusion and Exclusion Criteria of the Study

Schizophrenia

Metabolic Abnormalities in HIV-infected Persons

NCT01612858Phase 4COMPLETED
Sponsor

Tufts Medical Center

Enrollment

20

Started

2011

Primary outcome

Change in Insulin Sensitivity From Baseline to Week 12 Post-treatment With Insulin Sensitizing Agent

LipodystrophyHIV Infection

Pharmacokinetics of Metformin Intolerance

NCT03361878Phase 4COMPLETED
Sponsor

NHS Tayside

Enrollment

20

Started

2014

Primary outcome

Metformin AUC

Diabetes Mellitus, Type 2Metformin Adverse Reaction

Effect of Metformin as add-on Therapy on Glycemic Control and Other Outcomes in Type 1 Diabetes

NCT03590262Phase 4UNKNOWN
Sponsor

Shenzhen People's Hospital

Enrollment

20

Started

2018

Primary outcome

Change of hemoglobin A1c in percentage

Type 1 Diabetes MellitusMetformin

Metformin in Longevity Study (MILES).

NCT02432287Phase 4COMPLETED
Sponsor

Albert Einstein College of Medicine

Enrollment

16

Started

2014

Primary outcome

Increase in Number of Expressed Genes in Muscle and Adipose Tissue Using RNA Sequencing (RNA-Seq)

Aging

Metformin for the Treatment of Nonalcoholic Fatty Liver Disease (NAFLD)

NCT00736385Phase 4TERMINATED
Sponsor

Duke University

Enrollment

11

Started

2009

Primary outcome

Study Endpoints Will Include Measurements of Insulin Sensitivity, Hepatic Insulin Clearance, and Altered Parameters of Lipid Metabolism, Changes in the Histological Features That Define NAFLD, and Quantitative Measurements of Visceral and Peripheral Fat.

Fatty Liver

Metformin, Muscle Energetics, and Vascular Function in Older Adults With Peripheral Artery Disease

NCT01901224Phase 4TERMINATED
Sponsor

Brigham and Women's Hospital

Enrollment

2

Started

2013

Primary outcome

Change in PCr Recovery Time

Peripheral Artery Disease

Metformin and Prevention of Cardiovascular Events in Patients With Acute Myocardial Infarction and Prediabetes (MIMET)

NCT05182970Phase 3UNKNOWN
Sponsor

Karolinska Institutet

Enrollment

5,160

Started

2021

Primary outcome

Time to major CV event

PreDiabetesAcute Myocardial InfarctionNon ST Elevation Myocardial InfarctionST Elevation Myocardial Infarction

MK0431 and Pioglitazone Co-Administration Factorial Study in Patients With Type 2 Diabetes Mellitus (0431-102 AM2)

NCT00722371Phase 3COMPLETED
Sponsor

Merck Sharp & Dohme LLC

Enrollment

1,615

Started

2008

Primary outcome

Change From Baseline in Hemoglobin A1C (A1C) at Week 24

Type 2 Diabetes Mellitus

An Evaluation of Treatments for Sustained Clinical Response (18 Months) in Symptomatic Alzheimer's Disease

NCT07724132Phase 3RECRUITING
Sponsor

University College, London

Enrollment

1,200

Started

2026

Primary outcome

Change in Alzheimer's Disease Assessment Scale-Cognitive Subscale (ADAS-Cog) score

Alzheimer&#39;s Disease (AD)Mild Cognitive Impairment Due to Alzheimer's DiseaseAlzheimer Disease Dementia

Efficacy of Fixed Combination Therapy of Vildagliptin and Metformin Compared to the Individual Monotherapy Components in Drug Naive Patients With Type 2 Diabetes

NCT00382096Phase 3COMPLETED
Sponsor

Novartis Pharmaceuticals

Enrollment

1,179

Started

2006

Primary outcome

Change from baseline in HbA1c

Diabetes Mellitus, Type 2

Evaluate the Efficacy and Safety of Saxagliptin in Combination With Metformin IR Compared to Saxagliptin Monotherapy and to Metformin IR Monotherapy in Drug Naive Chinese Subjects With Type 2 Diabetes Who Have Inadequate Glycaemic Control

NCT02273050Phase 3COMPLETED
Sponsor

AstraZeneca

Enrollment

1,136

Started

2014

Primary outcome

Change From Baseline in HbA1c From Baseline to Week 24 Provided That it is Prior to Rescue

Type 2 Diabetes Mellitus

Study of Dapagliflozin in Combination With Metformin XR to Initiate the Treatment of Type 2 Diabetes

NCT00859898Phase 3COMPLETED
Sponsor

AstraZeneca

Enrollment

1,093

Started

2009

Primary outcome

Adjusted Mean Change From Baseline in Hemoglobin A1c (HbA1c) at Week 24 (Last Observation Carried Forward) - Randomized Treated Participants

Type 2 Diabetes Mellitus

Saxagliptin Treatment in Subjects With Type 2 Diabetes Who Are Not Controlled With Diet and Exercise

NCT00121641Phase 3COMPLETED
Sponsor

AstraZeneca

Enrollment

1,035

Started

2005

Primary outcome

Hemoglobin A1c (A1C) Changes From Baseline at Week 24

Diabetes Mellitus, Type 2

A Study in Participants With Type 2 Diabetes Mellitus

NCT01064687Phase 3COMPLETED
Sponsor

Eli Lilly and Company

Enrollment

978

Started

2010

Primary outcome

Change From Baseline to 26 Weeks Endpoint in Glycosylated Hemoglobin (HbA1c)

Diabetes Mellitus, Type 2

Study to Compare Sitagliptin Versus Sulfonylurea Treatment During Ramadan Fasting in Patients With Type 2 Diabetes (MK-0431-262)

NCT01340768Phase 3COMPLETED
Sponsor

Merck Sharp & Dohme LLC

Enrollment

870

Started

2010

Primary outcome

Percentage of Participants With at Least One Symptomatic Hypoglycemic Event

Type 2 Diabetes Mellitus

A Study of Prusogliptin Tablets Combined With Dapagliflozin Tablets and Metformin Hydrochloride Extended Release Tablets in Type 2 Diabetes

NCT07026968Phase 3ACTIVE_NOT_RECRUITING
Sponsor

CSPC Ouyi Pharmaceutical Co., Ltd.

Enrollment

815

Started

2025

Primary outcome

Mean change from baseline in HbA1c at Week 24

Type 2 Diabetes

Treatment Options for Type 2 Diabetes in Adolescents and Youth (TODAY)

NCT00081328Phase 3COMPLETED
Sponsor

National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

Enrollment

699

Started

2004

Primary outcome

Treatment Failure (Loss of Glycemic Control)

Diabetes Mellitus, Type II

A Efficacy, Safety, and Tolerability Study of Canagliflozin in Patients With Type 2 Diabetes Mellitus With Inadequate Glycemic Control on Metformin Alone or in Combination With a Sulphonylurea

NCT01381900Phase 3COMPLETED
Sponsor

Janssen Research & Development, LLC

Enrollment

678

Started

2011

Primary outcome

Change in Glycosylated Hemoglobin (HbA1c) From Baseline to Week 18

Diabetes Mellitus, Type 2

GLP-1 Receptor Agonist Lixisenatide Versus Exenatide in Patients With Type 2 Diabetes for Glycemic Control and Safety Evaluation, on Top of Metformin

NCT00707031Phase 3COMPLETED
Sponsor

Sanofi

Enrollment

639

Started

2008

Primary outcome

Absolute Change From Baseline in Glycosylated Hemoglobin (HbA1c) at Week 24

Diabetes Mellitus, Type 2

A Phase 3 Study to Evaluate the Efficacy of XW003 Compared With Dulaglutide in Participants With T2DM

NCT05680129Phase 3COMPLETED
Sponsor

Hangzhou Sciwind Biosciences Co., Ltd.

Enrollment

623

Started

2023

Primary outcome

Change from baseline in HbA1c

T2DMType 2 Diabetes Mellitus

A Study to Assess the Addition of Sitagliptin to Metformin Compared With the Addition of Dapagliflozin to Metformin in Participants With Type 2 Diabetes Mellitus (T2DM) and Mild Renal Impairment Who Have Inadequate Glycemic Control on Metformin With or Without a Sulfonylurea (MK-0431-838)

NCT02532855Phase 3COMPLETED
Sponsor

Merck Sharp & Dohme LLC

Enrollment

614

Started

2015

Primary outcome

Change From Baseline in A1C at Week 24

Type 2 Diabetes Mellitus

A Study Comparing the Effect of Dulaglutide With Liraglutide in Type 2 Diabetes

NCT01624259Phase 3COMPLETED
Sponsor

Eli Lilly and Company

Enrollment

599

Started

2012

Primary outcome

Change From Baseline to 26 Weeks Endpoint in Glycosylated Hemoglobin (HbA1c)

Type 2 Diabetes

Efficacy and Safety of Prandial Inhalation of Technosphere/Insulin in Combination With Metformin or Technosphere/Insulin Alone Versus 2 Oral Anti-Diabetic Agents in Subjects With Type 2 Diabetes

NCT00332488Phase 3COMPLETED
Sponsor

Mannkind Corporation

Enrollment

547

Started

2004

Primary outcome

Difference in Change From Baseline for HbA1c Between TI+ Metformin and Metformin+Secretagogue

Diabetes Mellitus, Type 2

Chiglitazar Added to Metformin for Type 2 Diabetes

NCT04807348Phase 3COMPLETED
Sponsor

Chipscreen Biosciences, Ltd.

Enrollment

533

Started

2021

Primary outcome

percentage of HbA1c change from baseline

Type 2 Diabetes

Efficacy and Safety of Alogliptin Combined With Metformin in Participants With Type 2 Diabetes Mellitus

NCT00286442Phase 3COMPLETED
Sponsor

Takeda

Enrollment

527

Started

2006

Primary outcome

Change From Baseline in Glycosylated Hemoglobin (HbA1c) at Week 26.

Diabetes Mellitus

A Glycemic Control Evaluation of Glimepiride Versus Rimonabant on Top of Metformin in Type 2 Diabetes

NCT00449605Phase 3TERMINATED
Sponsor

Sanofi

Enrollment

508

Started

2007

Primary outcome

Change from baseline in glycemic measure HbA1c

Diabetes Mellitus, Type 2

Efficacy and Safety of Sotagliflozin Versus Placebo in Participants With Type 2 Diabetes Mellitus on Background of Sulfonylurea Alone or With Metformin

NCT03066830Phase 3COMPLETED
Sponsor

Lexicon Pharmaceuticals

Enrollment

507

Started

2017

Primary outcome

Change From Baseline in Hemoglobin A1c (HbA1c) at Week 26

Type 2 Diabetes Mellitus

Phase-III Clinical Studies on Poly Herbal Anti-Diabetic Formulation

NCT07279909Phase 3ACTIVE_NOT_RECRUITING
Sponsor

Hamdard University

Enrollment

500

Started

2024

Primary outcome

glycated hemoglobin (HbA1c)

Diabetes Type 2Diabetes Mellitus, ExperimentalHbA1cUrinary GlucoseAbility of Experimental Drug to Lower HbA1c Compare to Metformin

GLP-1 Receptor Agonist Lixisenatide in Patients With Type 2 Diabetes for Glycemic Control and Safety Evaluation, on Top of Basal Insulin

NCT00715624Phase 3COMPLETED
Sponsor

Sanofi

Enrollment

496

Started

2008

Primary outcome

Absolute Change From Baseline in Glycosylated Hemoglobin (HbA1c) at Week 24

Diabetes Mellitus, Type 2

A Study to Evaluate the Efficacy and Safety of Sitagliptin and MK0431A in Comparison to a Commonly Used Medication in Patients With Type 2 Diabetes (0431-068)(COMPLETED)

NCT00541450Phase 3COMPLETED
Sponsor

Merck Sharp & Dohme LLC

Enrollment

492

Started

2008

Primary outcome

Change in Hemoglobin A1c (A1C) in the Sita/Met Fixed-Dose Combination (FDC) or Pioglitazone Groups at 40 Weeks

Type 2 Diabetes Mellitus

GLP-1 Receptor Agonist Lixisenatide in Patients With Type 2 Diabetes for Glycemic Control and Safety Evaluation, on Top of Pioglitazone

NCT00763815Phase 3COMPLETED
Sponsor

Sanofi

Enrollment

484

Started

2008

Primary outcome

Absolute Change From Baseline in Glycosylated Hemoglobin (HbA1c) at Week 24

Diabetes Mellitus Type 2

GLP-1 Receptor Agonist Lixisenatide in Patients With Type 2 Diabetes for Glycemic Control and Safety Evaluation, on Top of Metformin

NCT00763451Phase 3COMPLETED
Sponsor

Sanofi

Enrollment

484

Started

2008

Primary outcome

Absolute Change From Baseline in Glycosylated Hemoglobin (HbA1c) at Week 24

Diabetes Mellitus, Type 2

Safety and Efficacy of Ertugliflozin in the Treatment of Participants With Type 2 Diabetes Mellitus Who Have Inadequate Glycemic Control on Metformin and Sitagliptin (MK-8835-006; VERTIS SITA2)

NCT02036515Phase 3COMPLETED
Sponsor

Merck Sharp & Dohme LLC

Enrollment

464

Started

2014

Primary outcome

Change From Baseline in Hemoglobin A1C at Week 26

Type 2 Diabetes Mellitus

Efficacy and Safety Study of Pioglitazone Combined With Metformin on Metabolic Syndrome in Subjects With Type 2 Diabetes

NCT00772174Phase 3COMPLETED
Sponsor

Takeda

Enrollment

418

Started

2007

Primary outcome

Increase in High-Density Lipoprotein cholesterol levels.

Diabetes Mellitus

The Metformin Active Surveillance Trial (MAST) Study

NCT01864096Phase 3UNKNOWN
Sponsor

University Health Network, Toronto

Enrollment

408

Started

2013

Primary outcome

Time to progression

Prostate Cancer

Metformin Alleviates Abnormal Glucose Metabolism Induced by Statins in Schizophrenia Patients

NCT07045142Phase 3RECRUITING
Sponsor

Central South University

Enrollment

400

Started

2025

Primary outcome

Change from Baseline in Fasting Blood Glucose Concentration

Schizophrenia

The HOME Trial: Hyperinsulinaemia: the Outcome of Its Metabolic Effects, a Randomized Controlled Trial

NCT00375388Phase 3COMPLETED
Sponsor

Bethesda General Hospital, Hoogeveen

Enrollment

400

Started

1998

Primary outcome

To investigate the quality of the metabolic control of diabetes and related variables (daily dose of insulin, body weight).

Type 2 Diabetes Mellitus

A Phase III Study of SP2086 in Combination With Metformin in Patients With Type 2 Diabetes

NCT01970046Phase 3UNKNOWN
Sponsor

Jiangsu HengRui Medicine Co., Ltd.

Enrollment

360

Started

2013

Primary outcome

Change From Baseline in HbA1c (Hemoglobin A1C) at Week24

Type 2 Diabetes

A Study to Assess the Safety and Efficacy of Omarigliptin (MK-3102) in Participants With Type 2 Diabetes Mellitus (T2DM) and Inadequate Glycemic Control (MK-3102-011)

NCT01717313Phase 3COMPLETED
Sponsor

Merck Sharp & Dohme LLC

Enrollment

329

Started

2012

Primary outcome

Change From Baseline in Hemoglobin A1c (A1C) at Week 24 (Phase A, FAS Population)

Type 2 Diabetes Mellitus

Sitagliptin (MK-0431) vs. Placebo in Patients With Inadequate Glycemic Control on Metformin With Pioglitazone (MK-0431-128)

NCT00885352Phase 3COMPLETED
Sponsor

Merck Sharp & Dohme LLC

Enrollment

313

Started

2009

Primary outcome

Change From Baseline in Hemoglobin A1c (A1C) at Week 26

Type 2 Diabetes Mellitus

Efficacy of Pioglitazone/Metformin Combination Therapy in Subjects With Type 2 Diabetes Mellitus and Dyslipidemia.

NCT00770653Phase 3COMPLETED
Sponsor

Takeda

Enrollment

305

Started

2007

Primary outcome

The Mean Increase From Baseline in High-Density Lipoprotein Cholesterol.

Diabetes MellitusDyslipidemias

Efficacy and Safety of Madalena Association in the Treatment of Type II Diabetes Mellitus

NCT04670666Phase 3RECRUITING
Sponsor

EMS

Enrollment

270

Started

2024

Primary outcome

Change from baseline in glycated hemoglobin (HbA1c) levels.

Type 2 Diabetes Mellitus

Efficacy and Safety of Teneligliptin in Combination With Metformin in Chinese Patients With Type 2 Diabetes Mellitus

NCT02924064Phase 3COMPLETED
Sponsor

Tanabe Pharma Corporation

Enrollment

247

Started

2016

Primary outcome

The Changes in HbA1c at Week 24

Type 2 Diabetes Mellitus

Preventing Cognitive Decline with Metformin

NCT04511416Phase 3ACTIVE_NOT_RECRUITING
Sponsor

Garvan Institute of Medical Research

Enrollment

242

Started

2022

Primary outcome

changes in memory Z-score

Cognitive Decline

Study To Evaluate 24 Hour Blood Sugar Control (24-hour Mean Weighted Glucose) In Subjects That Are Taking Saxagliptin 5 mg Added Onto Metformin XR 1500 XR mg Compared To Subjects Taking Metformin XR 1500 mg Up-titrated To Metformin XR 2000 mg

NCT00918138Phase 3COMPLETED
Sponsor

AstraZeneca

Enrollment

219

Started

2009

Primary outcome

Change From Baseline in 24-Hour Mean Weighted Glucose (MWG) at Week 4

Type 2 Diabetes

A Pragmatic Approach to Lowering the Risk of Diabetes Mellitus After A Diagnosis of Gestational Diabetes Mellitus

NCT04615351Phase 3UNKNOWN
Sponsor

Women and Infants Hospital of Rhode Island

Enrollment

200

Started

2020

Primary outcome

Prediabetes or Diabetes

Gestational Diabetes

MetfOrmin BenefIts Lower Extremities With Intermittent Claudication

NCT05132439Phase 3RECRUITING
Sponsor

VA Office of Research and Development

Enrollment

200

Started

2022

Primary outcome

Maximal Walking distance on the 6 minute walk test

Intermittent Claudication

Assessment of Safety and Efficacy of Therapy for the Prevention of Weight Gain Associated With Olanzapine

NCT00401973Phase 3COMPLETED
Sponsor

Eli Lilly and Company

Enrollment

199

Started

2006

Primary outcome

Change From Baseline to Endpoint in Weight

SchizophreniaSchizoaffective Disorders

PCOS Treatment Using DLBS3233, Metformin, and Combination of Both

NCT01999686Phase 3COMPLETED
Sponsor

Dexa Medica Group

Enrollment

186

Started

2014

Primary outcome

HOMA-IR reduction

Polycystic Ovary Syndrome (PCOS)Insulin Resistance

A Study Assessing Saxagliptin Treatment in Subjects With Type 2 Diabetes Who Are Not Controlled With Diet and Exercise

NCT00374907Phase 3COMPLETED
Sponsor

AstraZeneca

Enrollment

156

Started

2006

Primary outcome

Insulin Secretion Rate Area Under the Curve (AUC) During Intravenous (IV)-Oral Hyperglycemic Clamp - Percent Change From Baseline at Week 12

Type 2 Diabetes

Maternal Weight Gain in Gestational Diabetes Controlled by Metformin Versus Insulin

NCT03841591Phase 3COMPLETED
Sponsor

Ain Shams University

Enrollment

124

Started

2018

Primary outcome

Rate of maternal weight gain per week

Gestational Diabetes

Clinical Study Evaluating Vildagliptin Versus Vildagliptin/Metformin on NAFLD With DM

NCT03925701Phase 3RECRUITING
Sponsor

Sherief Abd-Elsalam

Enrollment

120

Started

2019

Primary outcome

number of patients with improved nafld and insulin resistance

dm

Clinical Evaluation of the Effect of Metformin in Sepsis

NCT05979038Phase 3UNKNOWN
Sponsor

German University in Cairo

Enrollment

110

Started

2023

Primary outcome

28 days mortality

Sepsis

Managing DIabetes Remission After Combined Therapy in EarLy Stage of DiabetEs

NCT04271189Phase 3COMPLETED
Sponsor

Azienda Ospedaliero-Universitaria di Parma

Enrollment

108

Started

2020

Primary outcome

Assess the T2DM remission rate in patients with newly diagnosed T2DM treated with either POLYCHEM or with SDC for 16 weeks.

Newly Diagnosed Type 2 Diabetes

Effects of Empagliflozin + Linagliptin vs Metformin + Insulin Glargine on Renal and Vascular Changes in Type 2 Diabetes

NCT02752113Phase 3COMPLETED
Sponsor

Institut für Pharmakologie und Präventive Medizin

Enrollment

101

Started

2016

Primary outcome

Effect of empagliflozin plus linagliptin vs metformin plus insulin glargine on basal NO activity of renal vasculature (response of RPF (renal plasma flow) to L-NMMA (NG-monomethyl-L-arginine) infusion)

Diabetes Mellitus Type 2

Comparison of Fasiglifam (TAK-875) With Sitagliptin When Used in Combination With Metformin in Patients With Type 2 Diabetes

NCT01834274Phase 3TERMINATED
Sponsor

Takeda

Enrollment

96

Started

2013

Primary outcome

Change From Baseline in Glycosylated Hemoglobin (HbA1c)

Diabetes Mellitus, Type 2

Randomized, Double-blind, Active-controlled, Study of Rivoglitazone in Type 2 Diabetes Mellitus

NCT00571519Phase 3TERMINATED
Sponsor

Daiichi Sankyo

Enrollment

94

Started

2007

Primary outcome

Change in A1c From Baseline Through Week 20 Following Rivoglitazone Compared to Pioglitazone as Monotherapy Treatment of Type 2 Diabetes Mellitus

Type 2 Diabetes Mellitus

Metformin as Adjuvant to Insulin Therapy in Insulin-resistant Diabetes Mellitus With Pregnancy

NCT01915550Phase 3COMPLETED
Sponsor

Ain Shams University

Enrollment

90

Started

2012

Primary outcome

Proper Glycemic Control

Diabetes Mellitus

Study to Assess the Efficacy and Safety of Sitagliptin Added to the Regimen of Patients With Type 2 Diabetes Mellitus With Inadequate Glycemic Control on Metformin (0431-189)

NCT00875394Phase 3COMPLETED
Sponsor

Merck Sharp & Dohme LLC

Enrollment

68

Started

2007

Primary outcome

Change From Baseline in Glycosylated Hemoglobin A1C (A1C) at Week 24

Diabetes Mellitus, Non-Insulin-Dependent

Metformin in Obese Children and Adolescents

NCT01487993Phase 3COMPLETED
Sponsor

St. Antonius Hospital

Enrollment

62

Started

2011

Primary outcome

Change in BMI from baseline

ObesityInsulin Resistance

Cancer Chemoprevention by Metformin Hydrochloride in Oral Potentially Malignant Lesions

NCT03685409Phase 3UNKNOWN
Sponsor

Cairo University

Enrollment

62

Started

2018

Primary outcome

Clinical Outcomes

Oral Cancer

Sibutramine-metformin Combination Versus Sibutramine and Metformin Monotherapy in Obese Patients

NCT00941382Phase 3UNKNOWN
Sponsor

Laboratorios Silanes S.A. de C.V.

Enrollment

60

Started

2008

Primary outcome

improvement of body weight, adiposity and inflammation state defined by serum adiponectin, leptin and C reactive protein

Obesity

Treatment of Overweight Induced by Antipsychotic Medication in Young People With Autism Spectrum Disorders (ASD)

NCT01825798Phase 3COMPLETED
Sponsor

Holland Bloorview Kids Rehabilitation Hospital

Enrollment

60

Started

2013

Primary outcome

Change in Body Mass Index Z-score

OverweightAutism Spectrum Disorder

The Effect of Metformin Added to Clomiphene Citrate on Pregnancy Rates in Hyperandrogenic, Chronic Oligoovulatory or Anovulatory Women

NCT00413179Phase 3COMPLETED
Sponsor

59th Medical Wing

Enrollment

56

Started

1997

Primary outcome

Pregnancy Rates

Polycystic Ovary SyndromeAnovulationOligoovulationInfertilityHyperandrogenism

L-citrulline and Metformin in Duchenne's Muscular Dystrophy

NCT01995032Phase 3COMPLETED
Sponsor

University Hospital, Basel, Switzerland

Enrollment

47

Started

2013

Primary outcome

Mean change of motor function measure (MFM) D1 subscore (assessing standing and transfers)

Duchenne's Muscular Dystrophy (DMD)

A Study to Assess the Safety and Tolerability of Sitagliptin/Simvastatin Fixed-dose Combination (FDC) in Participants With Type 2 Diabetes Mellitus With Inadequate Glycemic Control on Metformin Monotherapy (MK-0431D-312)

NCT01702298Phase 3COMPLETED
Sponsor

Merck Sharp & Dohme LLC

Enrollment

42

Started

2012

Primary outcome

Change From Baseline in Fasting Plasma Glucose (FPG)

Type 2 Diabetes Mellitus

Saxagliptin + Metformin Compared to Saxagliptin or Metformin Monotherapy in PCOS Women With Impaired Glucose Homeostasis

NCT02022007Phase 3COMPLETED
Sponsor

Woman's

Enrollment

38

Started

2014

Primary outcome

Glucose Metabolism

Polycystic Ovary SyndromeDisorder of Glucose Regulation

Effect of Empagliflozin + Linagliptin + Metformin + Lifestyle in Patients With Prediabetes

NCT04131582Phase 3UNKNOWN
Sponsor

Universidad de Guanajuato

Enrollment

34

Started

2019

Primary outcome

Change from basal fasting and post2h OGTT glucose levels at 6 and 12 months

Prediabetic StateInsulin Resistance

Safety and Efficacy of Metformin for Treatment of Cytopenia in Children and Adolescents With Fanconi Anemia

NCT06519786Phase 3UNKNOWN
Sponsor

Ain Shams University

Enrollment

30

Started

2022

Primary outcome

Hematologic response (erythroid)

Fanconi Anemia

A Pragmatic Approach to Lower Diabetes Risk After Gestational Diabetes

NCT05280496Phase 3COMPLETED
Sponsor

Tufts Medical Center

Enrollment

20

Started

2022

Primary outcome

HbA1C

Diabetes, GestationalPreDiabetesDiabetes Mellitus, Type 2

A Research Study to Determine the Safety and Efficacy of Glucovance Compared to Metformin and Glyburide in Children and Adolescents With Type 2 Diabetes.

NCT00035542Phase 3COMPLETED
Sponsor

Bristol-Myers Squibb

Started

2001

Diabetes Mellitus, Non-Insulin-Dependent

Systemic Therapy in Advancing or Metastatic Prostate Cancer: Evaluation of Drug Efficacy

NCT00268476Phase 2/3ACTIVE_NOT_RECRUITING
Sponsor

Medical Research Council

Enrollment

11,992

Started

2005

Primary outcome

Overall survival

Prostate Cancer

A Study of Efficacy and Safety of Supaglutide in Type 2 Diabetes Patients On Metformin Treatment(SUPER-2)

NCT04998032Phase 2/3COMPLETED
Sponsor

Shanghai Yinnuo Pharmaceutical Technology Co., Ltd.

Enrollment

620

Started

2021

Primary outcome

HbA1c

Type2 Diabetes

Metformin to Reduce Heart Failure After Myocardial Infarction

NCT01217307Phase 2/3COMPLETED
Sponsor

University Medical Center Groningen

Enrollment

380

Started

2011

Primary outcome

Improvement in Left Ventricular Ejection Fraction

ST Elevation Myocardial Infarction (STEMI)Coronary Artery DiseaseHeart FailureDiabetes

Focusing on the Menopausal Transition to Improve Mid-Life Women's Health

NCT06975111Phase 2/3RECRUITING
Sponsor

University of Colorado, Denver

Enrollment

200

Started

2026

Primary outcome

Epigenetic aging measurements of "PhenoAge"

MenopauseMenopause Hot FlashesMenopause Related ConditionsCardiovascular

Inositol in Letrozol Resistant PCOS Women

NCT07585396Phase 2/3COMPLETED
Sponsor

Kafrelsheikh University

Enrollment

136

Started

2024

Primary outcome

Cumulative Ovulation rate confirmed by folliculometry measured by transvaginal ultrasound

Polycystic Ovary SyndromeInfertility

A Trial of Metformin in Individuals With Fragile X Syndrome

NCT03479476Phase 2/3COMPLETED
Sponsor

University of California, Davis

Enrollment

120

Started

2018

Primary outcome

Change from baseline in the Expressive Language Sampling (ELS) mean Number of Different Words (NDW) score

Fragile X SyndromeFragile X Mental Retardation SyndromeMental Retardation, X LinkedGenetic Diseases, X-LinkedTrinucleotide Repeat ExpansionFra(X) SyndromeIntellectual DisabilityFXSNeurobehavioral ManifestationsSex Chromosome Disorders

Efficacy and Safety of Platelet-rich Plasma, Metformin and Cryotherapy in Treatment of Non-genital Warts

NCT06691542Phase 2/3NOT_YET_RECRUITING
Sponsor

Assiut University

Enrollment

108

Started

2024

Primary outcome

Complete resolution of the wart(s) by disappearance of the wart and return of the normal skin markings

Non-Genital Warts

Simvastatin and Metformin in Chronic Periodontitis

NCT02372656Phase 2/3COMPLETED
Sponsor

Government Dental College and Research Institute, Bangalore

Enrollment

98

Started

2013

Primary outcome

Change in defect depth reduction from baseline to 6 months and from baseline to 9 months

Chronic Periodontitis

Exercise Dose and Metformin for Vascular Health in Metabolic Syndrome

NCT03355469Phase 2/3COMPLETED
Sponsor

Rutgers University

Enrollment

91

Started

2017

Primary outcome

Change in Fasting Unscaled Flow Mediated Dilation (FMD) of the Brachial Artery

Metabolic Syndrome

Locally Delivered Metformin & Rosuvastatin for Treatment of Intrabony Defects in Chronic Periodontitis

NCT03204058Phase 2/3COMPLETED
Sponsor

Government Dental College and Research Institute, Bangalore

Enrollment

90

Started

2016

Primary outcome

Change in Bone defect fill

Chronic Periodontitis

PRF+1% MF for Class II Mandibular Furcation Defects

NCT03207698Phase 2/3COMPLETED
Sponsor

Government Dental College and Research Institute, Bangalore

Enrollment

75

Started

2015

Primary outcome

Radiographic bone fill assessed in percentage

Furcation Defects

1% Metformin Gel in the Treatment of Class II Furcation Defects

NCT02580331Phase 2/3COMPLETED
Sponsor

Government Dental College and Research Institute, Bangalore

Enrollment

64

Started

2014

Primary outcome

Bone defect fill

Chronic Periodontitis

Metformin & Inflammation in Pre-diabetic Children

NCT01394887Phase 2/3COMPLETED
Sponsor

Coordinación de Investigación en Salud, Mexico

Enrollment

52

Started

2002

Primary outcome

presence of inflammation

Glucose IntoleranceInflammationDiabetes

Metabolic and Neuro-Endocrine Effect of Treating PCOS in Adolescents

NCT03981861Phase 2/3COMPLETED
Sponsor

Children's Mercy Hospital Kansas City

Enrollment

12

Started

2016

Primary outcome

Oral Glucose Tolerance Test

PCOS

Oxidative Phosphorylation Targeting In Malignant Glioma Using Metformin Plus Radiotherapy Temozolomide

NCT04945148Phase 2RECRUITING
Sponsor

Hopital Foch

Enrollment

640

Started

2024

Primary outcome

Assessement of Progression Free Survival (PFS) of patients with newly-diagnosed IDH wild-type OXPHOS + GBM (either with or without FGFR3-TACC3 gene fusion) treated with RT plus TMZ combined with metformin

Glioblastoma, IDH-wildtype

12 Weeks Treatment With 3 Different Doses of BI 10773 in Type 2 Diabetic Patients

NCT00789035Phase 2COMPLETED
Sponsor

Boehringer Ingelheim

Enrollment

408

Started

2008

Primary outcome

Change of Glycosilated Haemoglobin A1c (HbA1c) From Baseline After 12 Weeks of Treatment

Diabetes Mellitus, Type 2

Evaluation of Glucose Lowering Effect, Safety and Tolerability of CS-917

NCT00290940Phase 2COMPLETED
Sponsor

Daiichi Sankyo

Enrollment

400

Started

2006

Primary outcome

Mean change from baseline in HbA1C after 12 weeks compared to placebo

Diabetes Mellitus, Type 2

A Trial of BMS-512148 in Patients With Type 2 Diabetes Mellitus

NCT00263276Phase 2COMPLETED
Sponsor

AstraZeneca

Enrollment

389

Started

2005

Primary outcome

Mean change from baseline in HbA1c compared to placebo.

Type 2 Diabetes

A Research Study to Compare Insulin 287 Once a Week to Insulin Glargine (100 Units/mL) Once a Day in People With Type 2 Diabetes.

NCT03751657Phase 2COMPLETED
Sponsor

Novo Nordisk A/S

Enrollment

247

Started

2018

Primary outcome

Change in Glycated Haemoglobin (HbA1c) [Percentage Point (%-Point)]

Diabetes Mellitus, Type 2

Impact of Benfluorex Versus Metformin on Glucose Control and Insulin Secretion in Chinese Type 2 Diabetic Patients

NCT00544518Phase 2UNKNOWN
Sponsor

Air Force Military Medical University, China

Enrollment

240

Started

2007

Primary outcome

The change of HbA1c from baseline to the end of treatment

Type 2 Diabetes

A Study of DPP-IV Inhibitor in Patients With Type 2 Diabetes

NCT00111631Phase 2COMPLETED
Sponsor

Hoffmann-La Roche

Enrollment

218

Started

2005

Primary outcome

Absolute change from baseline in HbAlc\n

Diabetes Mellitus Type 2

Neoadjuvant Letrozole Plus Metformin vs Letrozole Plus Placebo for ER-positive Postmenopausal Breast Cancer

NCT01589367Phase 2COMPLETED
Sponsor

Seoul National University Hospital

Enrollment

208

Started

2012

Primary outcome

Clinical response rate

Hormone Receptor Positive Malignant Neoplasm of Breast

Pioglitazone and SGLT2 Inhibitors vs. DPP4 Inhibitors in Patients With Stroke

NCT04419337Phase 2UNKNOWN
Sponsor

Chang Gung Memorial Hospital

Enrollment

200

Started

2019

Primary outcome

HbA1C

Diabetes MellitusStroke

Fixed Dose Combination of Fluoxetin and Metformin in the Management of Overweight and Obesity

NCT03051451Phase 2SUSPENDED
Sponsor

Laboratorios Silanes S.A. de C.V.

Enrollment

150

Primary outcome

Decrease of at least 5% of body weight and the reduction in the body mass index.

Overweight and Obesity

Megestrol Acetate Plus Metformin to Megestrol Acetate in Patients With Endometrial Atypical Hyperplasia or Early Stage Endometrial Adenocarcinoma

NCT01968317Phase 2COMPLETED
Sponsor

Xiaojun Chen

Enrollment

150

Started

2013

Primary outcome

Cumulative CR Rates Within 16 Weeks

Endometrial Atypical HyperplasiaEndometrial Adenocarcinoma

The Fenofibrate and Metformin for Atherogenic Dyslipidemia (FAMA) Study

NCT00400231Phase 2COMPLETED
Sponsor

University of Pennsylvania

Enrollment

124

Started

2005

Primary outcome

triglyceride levels

Metabolic Syndrome x

The Gut Microbiome in Type 1 Diabetes and Mechanism of Metformin Action

NCT05414409Phase 2RECRUITING
Sponsor

Heba M. Ismail

Enrollment

114

Started

2022

Primary outcome

Differences in the gut microbiome in lean and overweight/obese youth with type 1 diabetes

Type 1 DiabetesObesity

Metformin for the Treatment of mCRC Patients Undergoing FOLFIRI Plus Target Therapy

NCT06826092Phase 2RECRUITING
Sponsor

Kaohsiung Medical University Chung-Ho Memorial Hospital

Enrollment

110

Started

2022

Primary outcome

Disease progression-free survival (PFS)

Progression-Free Survival

Conjugated Linoleic Acid / Leucine Versus Metformin on Visceral Fat in Metabolic Syndrome

NCT02629627Phase 2COMPLETED
Sponsor

Centro Universitario de Ciencias de la Salud, Mexico

Enrollment

104

Started

2016

Primary outcome

Change from Baseline in visceral fat area messure in centimers ^2 at 8 weeks

Metabolic Syndrome

The Effect of Metformin on Fecundability in an ART(Assisted Reproductive Technology) Setting - the Correlation to Uterine Flows

NCT02848950Phase 2UNKNOWN
Sponsor

The Baruch Padeh Medical Center, Poriya

Enrollment

100

Started

2016

Primary outcome

pregnancy rate

Infertility Female

Neoadjuvant FDC With Melatonin or Metformin for Locally Advanced Breast Cancer.

NCT02506777Phase 2UNKNOWN
Sponsor

N.N. Petrov National Medical Research Center of Oncology

Enrollment

96

Started

2015

Primary outcome

Response rate

Breast Cancer

An Open-Label Pilot Intervention Trial to Prevent Diabetes in Prediabetic Adult Survivors of Childhood Cancer

NCT04742751Phase 2ACTIVE_NOT_RECRUITING
Sponsor

St. Jude Children's Research Hospital

Enrollment

96

Started

2022

Primary outcome

Adherence for feasibility

PreDiabetesAdult Children

Metformin Hydrochloride in Preventing Esophageal Cancer in Patients With Barrett Esophagus

NCT01447927Phase 2COMPLETED
Sponsor

National Cancer Institute (NCI)

Enrollment

93

Started

2012

Primary outcome

Percent Change in Median pS6K1 Immunostaining Among Participants With Barrett Esophagus

Barrett EsophagusEsophageal Cancer

A Study to Assess the Safety, Tolerability and Glucose-Lowering Efficacy of MK-0893 in Participants With Type 2 Diabetes Mellitus (MK-0893-005)

NCT02004886Phase 2COMPLETED
Sponsor

Merck Sharp & Dohme LLC

Enrollment

74

Started

2006

Primary outcome

Change From Baseline in 24-hour Weighted Mean Glucose (WMG) at Week 4

Type 2 Diabetes Mellitus

Anti-PD-1 mAb Plus Metabolic Modulator in Solid Tumor Malignancies

NCT04114136Phase 2RECRUITING
Sponsor

Dan Zandberg

Enrollment

72

Started

2020

Primary outcome

Best overall response

MelanomaNSCLCHepatocellular CarcinomaUrothelial CancerGastric AdenocarcinomaHNSCCEsophageal AdenocarcinomaMicrosatellite Instability-High Solid Malignant Tumor

Metformin in Safety and Efficacy in Gouty Patients

NCT06924658Phase 2RECRUITING
Sponsor

Mostafa Bahaa

Enrollment

70

Started

2025

Primary outcome

- Clinical assessment of disease activity

Gout

A Study Investigating Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of GSK2330672 Administered With Metformin to Type 2 Diabetes Patients

NCT02202161Phase 2COMPLETED
Sponsor

GlaxoSmithKline

Enrollment

70

Started

2014

Primary outcome

Change From Baseline in Derived Plasma Glucose Parameter Over a 24-hour Period-fasting and Weighted Mean Glucose Area Under Curve (AUC[0-24 Hour])

Diabetes Mellitus, Type 2

Assessing Safety and Efficacy of Sintilimab and Metformin Combination Therapy in SCLC

NCT03994744Phase 2UNKNOWN
Sponsor

Hunan Cancer Hospital

Enrollment

68

Started

2019

Primary outcome

Objective response rate of Sintilimab and Metformin(ORR)

Small-cell Lung CancerSmall Cell Lung CarcinomaSmall Cell Lung Cancer RecurrentSmall Cell Lung Cancer Extensive Stage

Exenatide and Metformin Therapy in Overweight Women With PCOS

NCT00344851Phase 2COMPLETED
Sponsor

Metabolic Center of Louisiana Research Foundation

Enrollment

60

Started

2006

Primary outcome

- Menstrual Cyclicity ( # menses/ 24 weeks)

Polycystic Ovary Syndrome

Topical Metformin Versus Topical Ketotifen in Melasma Treatment

NCT06942390Phase 2NOT_YET_RECRUITING
Sponsor

Assiut University

Enrollment

60

Started

2025

Primary outcome

Reduction in Melasma Severity Index (MASI) Score

Melasma

Comparative Clinical and Biochemical Study Evaluating the Effectiveness of Metformin Versus Febuxostat on Gouty Obese Non-Diabetic Patients

NCT06995339Phase 2RECRUITING
Sponsor

Mostafa Bahaa

Enrollment

60

Started

2025

Primary outcome

Change in serum uric acid level

Gout

Metformin Prostate Cancer Adjuvant Trial

NCT02176161Phase 2COMPLETED
Sponsor

NYU Langone Health

Enrollment

59

Started

2014

Primary outcome

Mean Prostate Specific Antigen (PSA) Level

Prostate CancerProstate Cancer Recurrent

Metformin in the Diastolic Dysfunction of Metabolic Syndrome

NCT02017561Phase 2COMPLETED
Sponsor

Universidade do Porto

Enrollment

54

Started

2014

Primary outcome

Change in mean early diastolic mitral annular velocity (cm/s)

Metabolic Syndrome XDiastolic DysfunctionInsulin Resistance

Metformin Plus Modified FOLFOX 6 in Metastatic Pancreatic Cancer

NCT01666730Phase 2COMPLETED
Sponsor

Case Comprehensive Cancer Center

Enrollment

50

Started

2013

Primary outcome

Median Overall Survival (OS)

Acinar Cell Adenocarcinoma of the PancreasDuct Cell Adenocarcinoma of the PancreasRecurrent Pancreatic CancerStage IV Pancreatic Cancer

An Extension Protocol to Evaluate Dose Comparisons of Leucine-Metformin Combinations in Type 2 Diabetic Patients

NCT02435277Phase 2COMPLETED
Sponsor

NuSirt Biopharma

Enrollment

50

Started

2014

Primary outcome

Change in HbA1c Levels in Patient Receiving the Various Doses of Leucine and Metformin Combinations

Type 2 Diabetes Mellitus

Study of Pharmacologic Manipulation of AGE (Advanced Glycation Endproducts) Levels in Prostate Cancer Patients Receiving Androgen Deprivation Therapy

NCT02946996Phase 2TERMINATED
Sponsor

Medical University of South Carolina

Enrollment

41

Started

2016

Primary outcome

AGE Level Reduction

Prostate Cancer

Effect of Metformin on Breast Cancer Metabolism

NCT01266486Phase 2COMPLETED
Sponsor

Oxford University Hospitals NHS Trust

Enrollment

41

Started

2011

Primary outcome

Measure Metformin Induced effects in phosphorylation of S6K, 4E-BP-1 and AMPK via immunohistochemical analysis

Breast Cancer

Assessment of Metformin as Adjuvant Therapy in Patients With Ulcerative Colitis

NCT04750135Phase 2UNKNOWN
Sponsor

National Hepatology & Tropical Medicine Research Institute

Enrollment

40

Started

2021

Primary outcome

Difference between the two groups in the expression of colonic (NF)-κB proteins.

Ulcerative ColitisInflammatory Bowel Diseases

Metformin and Sitagliptin in Women With Previous Gestational Diabetes

NCT01336322Phase 2COMPLETED
Sponsor

University of Pisa

Enrollment

40

Started

2011

Primary outcome

Beta-cell function

Pre-diabetes

Effect of Propolis or Metformin Administration on Glycemic Control in Patients With Type 2 Diabetes Mellitus

NCT03416127Phase 2COMPLETED
Sponsor

University of Guadalajara

Enrollment

36

Started

2018

Primary outcome

Fasting Serum Glucose

Diabetes Mellitus, Type 2

Impact of Metformin on Leptin Transport in Cerebrospinal Fluid of Obese Patients

NCT03974139Phase 2UNKNOWN
Sponsor

Lille Catholic University

Enrollment

31

Started

2020

Primary outcome

cerebrospinal fluid /plasma leptin ratio

Obesity Without Type 2 Diabetes, With BMI>30

Effectiveness of Metformin Compared to Insulin in Pregnant Women With Mild Preexisting or Early Gestational Diabetes

NCT00835861Phase 2COMPLETED
Sponsor

University of North Carolina, Chapel Hill

Enrollment

31

Started

2008

Primary outcome

Blood Glucose Measurements

Non Insulin Dependent DiabetesPregnancy

Metformin for People With CFRD on CFTR Modulator Therapy to Improve Ion Channel Function

NCT04530383Phase 2NOT_YET_RECRUITING
Sponsor

University of Kansas Medical Center

Enrollment

30

Started

2026

Primary outcome

Change in BK channel gene expression

Cystic Fibrosis-related DiabetesCystic Fibrosis

A Pilot Study of Metformin Treatment in Patients With Well-differentiated Neuroendocrine Tumors

NCT02279758Phase 2UNKNOWN
Sponsor

Instituto do Cancer do Estado de São Paulo

Enrollment

30

Started

2014

Primary outcome

Disease free survival

Well-differentiated Neuroendocrine Tumors

Clinical Activity of Metformin With High-dose of Dexamethasone in Relapse Multiple Myeloma

NCT02967276Phase 2TERMINATED
Sponsor

University of Campinas, Brazil

Enrollment

28

Started

2017

Primary outcome

Response Rate (RR)

Multiple Myeloma

Effect of Insulin Sensitizer Metformin on AD Biomarkers

NCT01965756Phase 2COMPLETED
Sponsor

University of Pennsylvania

Enrollment

20

Started

2013

Primary outcome

Word List Memory Total - ADAS-cog

Alzheimer's DiseaseVascular DementiaDementiaMemory Impairment

Metformin in Pseudomyxoma Peritonei Secondary to Appendiceal Mucinous Neoplasms

NCT07693452Phase 2RECRUITING
Sponsor

University of California, Irvine

Enrollment

15

Started

2026

Primary outcome

Proportion of Participants who have completed at least (≥) 80% of planned metformin doses by 6 months

Appendiceal Mucinous NeoplasmPseudomyxoma Peritonei

Metformin With Neoadjuvant Chemoradiation to Improve Pathologic Responses in Rectal Cancer

NCT03053544Phase 2COMPLETED
Sponsor

Sunnybrook Health Sciences Centre

Enrollment

15

Started

2016

Primary outcome

Pathological Complete Response (pCR) rate

Rectal Neoplasm Carcinoma in Situ Adenocarcinoma

Glycemic Regulation as Endometriosis Adjunct Treatment

NCT06611501Phase 2ACTIVE_NOT_RECRUITING
Sponsor

Boston Children's Hospital

Enrollment

14

Started

2025

Primary outcome

Change in pain assessed by the Brief Pain Inventory Interference Scale (BPI) over 6 months

Pelvic PainEndometriosis

Efficacity and Safety of Metformin XR in CKD Stage 1 to 3

NCT02895750Phase 2COMPLETED
Sponsor

Centre Hospitalier Universitaire, Amiens

Enrollment

12

Started

2017

Primary outcome

Efficacy of once daily Metformin XR on 24-h blood glucose control

Renal Insufficiency, Chronic

Hypothalamic Obesity Following Craniopharyngioma Surgery: A Pilot Trial of Combined Metformin and Diazoxide Therapy

NCT00892073Phase 2COMPLETED
Sponsor

The Hospital for Sick Children

Enrollment

9

Started

2006

Primary outcome

Change in BMI and BMI SDS (calculated using for Disease Control formula - www.cdc.gov.doc) over 6 months of treatment compared to change in BMI and BMI SDS over 6 month 'run-in' period (prior to study start)

Hypothalamic Obesity

Metformin as a Chemoprevention Agent in Non-small Cell Lung Cancer

NCT01717482Phase 2TERMINATED
Sponsor

Mayo Clinic

Enrollment

6

Started

2012

Primary outcome

Evaluate Feasibility of Patient Randomization, Accrual, and Tissue Collection for Study Conduction

Lung NeoplasmsCarcinoma, Non-Small-Cell Lung

Metformin in Combination With Standard Induction Therapy for Large B-cell Lymphoma (DLBCL)

NCT02531308Phase 2TERMINATED
Sponsor

Rush University Medical Center

Enrollment

5

Started

2015

Primary outcome

Progression Free Survival

Diffuse Large B-Cell Lymphoma

Improving Metabolic Parameters of Antipsychotic Child Treatment With Ziprasidone, Aripiprazole, and Clozapine

NCT00617058Phase 2TERMINATED
Sponsor

University of North Carolina, Chapel Hill

Enrollment

1

Started

2007

Primary outcome

Percent Change in BMI

Weight Gain

The Antidiabetic Metformin as a Novel Adjunct to Antidepressants in Major Depressive Disorder Patients

NCT04088448Phase 1/2COMPLETED
Sponsor

Sadat City University

Enrollment

80

Started

2017

Primary outcome

Effect on Hamilton Depression rating scale score (HAM-D score)

Major Depressive Disorder

A Study of the Safety and Effectiveness of LY3053102 in Participants With Type 2 Diabetes

NCT02020616Phase 1/2TERMINATED
Sponsor

Eli Lilly and Company

Enrollment

60

Started

2013

Primary outcome

Change From Baseline in Hemoglobin A1c (HbA1c) at 12-Week Endpoint

Type 2 Diabetes Mellitus

Relapse in Previously Irradiated Prostate Bed : Stereotactic Ablative Reirradiation Potentiated by Metformin

NCT04536805Phase 1/2ACTIVE_NOT_RECRUITING
Sponsor

Institut Cancerologie de l'Ouest

Enrollment

44

Started

2020

Primary outcome

For phase 1:. Select the recommended dose for SBRT (either 5 x 6 Gy, 6 x 6 Gy, or 5 x 5 Gy), in combination with Metformin

Prostate Cancer

Metformin in Patients With Fragile X

NCT04141163Phase 1/2UNKNOWN
Sponsor

Rowan University

Enrollment

40

Started

2019

Primary outcome

The safety and tolerability of metformin in patients with Fragile X Syndrome as assessed by the number of adverse events reported during the course of the study.

Fragile X Syndrome

Oral Metformin for Treating Melasma in Latin American Women

NCT06845540Phase 1/2RECRUITING
Sponsor

University of Puerto Rico

Enrollment

30

Started

2025

Primary outcome

Change in modified Melasma Area and Severity Index (mMASI) score from baseline to week 12

Melasma

Phase I/II Study OF Metformin in Combination With Cisplatin and Radiation in Head and Neck Squamous Cell Carcinoma

NCT02949700Phase 1/2COMPLETED
Sponsor

Baylor College of Medicine

Enrollment

26

Started

2017

Primary outcome

Phase I - Dose-Limiting Toxicity

Head and Neck Squamous Cell Carcinoma

Assessing the PK and Effect on Glucose and GI Hormone Concentrations of Metformin Delayed-Release in Subjects With T2DM

NCT01677299Phase 1/2COMPLETED
Sponsor

Elcelyx Therapeutics, Inc.

Enrollment

24

Started

2012

Primary outcome

Area Under the Curve (0-t) of Plasma Metformin

Type 2 Diabetes Mellitus

A Phase I Double Blind Study of Metformin Acting on Endogenous Neural Progenitor Cells in Children and Young Adults With Multiple Sclerosis

NCT04121468Phase 1/2RECRUITING
Sponsor

The Hospital for Sick Children

Enrollment

20

Started

2020

Primary outcome

Number of patients with adverse events (safety and tolerability)

Multiple Sclerosis (MS)

Bioequivalence Study of Combination Tablets of Saxagliptin / Dapagliflozin / Metformin XR (Extended-release) and Dapagliflozin / Metformin XR Relative to Individual Components in Healthy Subjects

NCT03138356Phase 1COMPLETED
Sponsor

AstraZeneca

Enrollment

126

Started

2017

Primary outcome

PK assessment: AUC (Area under plasma concentration-time curve from time zero to infinity)

Type 2 Diabetes Mellitus

A Study Comparing the Amount of Metformin and After Taking a Combination Tablet vs. Separate Tablets

NCT01055691Phase 1COMPLETED
Sponsor

AstraZeneca

Enrollment

120

Started

2010

Primary outcome

bioequivalence will be demonstrated if the 90% confidence interval (CI) for the formulation effect is contained within the interval of 0.8000-1.2500 for AUC(0-t), AUCinf and Cmax with respect to both dapagliflozin and metformin.

Healthy Volunteers

Clinical Investigation of Herbal Formulation and Its Efficacy in Polycystic Ovarian Syndrome

NCT07399535Phase 1COMPLETED
Sponsor

Jinnah Postgraduate Medical Centre

Enrollment

116

Started

2025

Primary outcome

Regulation of Menstrual Cycle

Polycystic Ovarian Syndrome (PCOS)Herbal MedicineInfertilityMetabolic Disorder

Evaluation of Clinical Safety of Combining Metformin With Anticancer Chemotherapy

NCT01442870Phase 1COMPLETED
Sponsor

Tufts Medical Center

Enrollment

105

Started

2011

Primary outcome

Incidence of dose limiting toxicity when metformin is added to chemotherapy

Cancer

Bioequivalence of a 2.5 mg Linagliptin / 850 mg Metformin Fixed Dose Combination Tablet Compared With Single Linagliptin 2.5 mg and Metformin 850 mg Tablets in Healthy Volunteers

NCT02220647Phase 1COMPLETED
Sponsor

Boehringer Ingelheim

Enrollment

96

Started

2010

Primary outcome

AUC0-72 (area under the concentration-time curve of linagliptin in plasma over the time interval from 0 to 72 h)

Healthy

Multiple Ascending Dose Study in Healthy Male Subjects and Overweight to Obese Male and Female Type 2 Diabetes Mellitus (T2DM) Patients

NCT02411825Phase 1COMPLETED
Sponsor

Sanofi

Enrollment

76

Started

2015

Primary outcome

Number of adverse events

Type 2 Diabetes Mellitus

Comparison of PK After Administration of HCP1201 and Co-administration of Metformin SR 750mg and Rosuvastatin 20mg

NCT01929512Phase 1COMPLETED
Sponsor

Hanmi Pharmaceutical Company Limited

Enrollment

72

Started

2013

Primary outcome

metformin, rosuvastatin Cmax

Diabetes Mellitus

Safety and Pharmacokinetics Study of CPL207280 Compound in Healthy Volunteers.

NCT04622111Phase 1COMPLETED
Sponsor

Celon Pharma SA

Enrollment

68

Started

2020

Primary outcome

Determination of maximum tolerated dose (MTD) or administration of the maximum dose provided in the protocol after single and multiple oral administration of IMP.

Healthy Volunteers

Sitagliptin/Metformin Fed Bioequivalence Study (0431A-080)

NCT00929201Phase 1COMPLETED
Sponsor

Merck Sharp & Dohme LLC

Enrollment

61

Started

2008

Primary outcome

Plasma Area Under the Curve (AUC(0 to Infinity)) for Metformin

Type 2 Diabetes Mellitus

A Trial to Evaluate the Effects of Itraconazole and Carbamazepine on the Pharmacokinetics of Emraclidine and of Emraclidine on the Pharmacokinetics of Metformin in Healthy Adult Participants

NCT05965219Phase 1COMPLETED
Sponsor

Cerevel Therapeutics, LLC

Enrollment

60

Started

2023

Primary outcome

Part A: Maximum Observed Plasma Concentration (Cmax) of Emraclidine and its Metabolite CV-0000364

Healthy Volunteers

A Clinical Study in Healthy Adults to See How the Body Processes and How Safe a Tablet That Combines Gemigliptin, Dapagliflozin, and Metformin is, Compared With Taking Zemiglo and Xigduo XR Together While Fasting.

NCT07399470Phase 1COMPLETED
Sponsor

LG Chem

Enrollment

58

Started

2026

Primary outcome

The plasma concentration of Gemigliptin, Dapagliflozin and Metformin

Healthy VolunteersFasting Conditions

A Drug-Drug Interaction Study Between XW003 and Metformin, Warfarin, Rosuvastatin or Digoxin

NCT06335134Phase 1COMPLETED
Sponsor

Hangzhou Sciwind Biosciences Co., Ltd.

Enrollment

57

Started

2023

Primary outcome

Pharmacokinetics of metformin: AUC0-inf

Healthy Volunteers

Bioequivalence Study of Metformin Hydrochloride Tablets 1000 mg Tablets of Dr. Reddy's Laboratories Limited Under Fasting Condition

NCT01160042Phase 1COMPLETED
Sponsor

Dr. Reddy's Laboratories Limited

Enrollment

54

Started

2005

Primary outcome

Bioequivalence on Cmax, AUC, Tmax,t1/2 parameters

Healthy

A Study to Evaluate the Pharmacokinetics and Safety Between "BR3006" and Co-administration of "BR3006A", "BR3006B", and "BR3006C" in Healthy Adult Volunteers (Fasting)

NCT07083388Phase 1RECRUITING
Sponsor

Boryung Pharmaceutical Co., Ltd

Enrollment

52

Started

2025

Primary outcome

Pharmacokinetic variable - Cmax

Diabetes Mellitus

Relative Bioavailability of 2 Fixed Dose Combinations of Empagliflozin/Linagliptin/Metformin Extended Release Compared With Single Tablets

NCT02821910Phase 1COMPLETED
Sponsor

Boehringer Ingelheim

Enrollment

50

Started

2016

Primary outcome

Area Under the Concentration-time Curve of Empagliflozin in Plasma Over the Time Interval From 0 to the Time of the Last Quantifiable Concentration (AUC0-tz)

Healthy

Pharmacokinetics of Fixed Dose Combination (FDC) Tablets of Linagliptin /Metformin

NCT01540487Phase 1COMPLETED
Sponsor

Boehringer Ingelheim

Enrollment

48

Started

2012

Primary outcome

Area Under the Concentration-time Curve of Linagliptin in Plasma Over the Time Interval 0 to 72 Hours (AUC0-72)

Healthy

A Bioequivalence Study of CT-L01 Compared to Co-administration (ALO 25 mg and MET XR 1,000 mg) in Healthy Volunteers

NCT05363384Phase 1COMPLETED
Sponsor

Celltrion

Enrollment

48

Started

2022

Primary outcome

AUClast (Area under the plasma concentration-time curve)

Healthy

A Bioequivalence Study of the Fixed Dose Combination Tablets of Canagliflozin and Metformin Extended Release (XR) With Respect to the Individual Components in Healthy Fed Participants

NCT02077803Phase 1COMPLETED
Sponsor

Janssen Research & Development, LLC

Enrollment

47

Started

2014

Primary outcome

Plasma concentration of canagliflozin following the single dose of drug administration

Healthy

Fasting BE Study of Metformin Hydrochloride ER Tablets 500 mg and Glucophage® XR Tablets 500 mg

NCT00650234Phase 1COMPLETED
Sponsor

Mylan Pharmaceuticals Inc

Enrollment

47

Started

2004

Primary outcome

Bioequivalence

Healthy

This Study Tests the Effect of Certain Medicines on the Transport of Other Medicines in the Body of Healthy Men

NCT03307252Phase 1COMPLETED
Sponsor

Boehringer Ingelheim

Enrollment

45

Started

2017

Primary outcome

Area Under the Concentration-time Curve of the Analyte in Plasma Over the Time Interval From 0 to the Last Quantifiable Data Point (AUC0-tz) (Verapamil + R1 (T1) vs. R1)

Healthy

Voxelotor CYP and Transporter Cocktail Interaction Study

NCT05981365Phase 1COMPLETED
Sponsor

Pfizer

Enrollment

44

Started

2023

Primary outcome

Part A: Maximum Observed Plasma Concentration (Cmax) for Bupropion

Sickle Cell Disease

Effect of Genetic Variation in the Transporter OCT2, MATE1 and MATE2-K on the PKPD of Metformin

NCT01681680Phase 1COMPLETED
Sponsor

University of California, San Francisco

Enrollment

41

Started

2010

Primary outcome

Renal clearance of Metformin based on genotypes

Healthy

Modular Clinical Pharmacology Study to Evaluate the Drug-drug Interaction Potential and Relative Bioavailability of Saruparib

NCT06899061Phase 1ACTIVE_NOT_RECRUITING
Sponsor

AstraZeneca

Enrollment

41

Started

2025

Primary outcome

Module 1: Area under plasma concentration-time curve from zero extrapolated to infinity (AUCinf) of digoxin, furosemide, metformin and rosuvastatin when dosed alone and in combination with saruparib

Advanced Solid Malignancies

Bioequivalence Study for Acarbose / Metformin FDC

NCT01728740Phase 1COMPLETED
Sponsor

Bayer

Enrollment

40

Started

2012

Primary outcome

Ratio of postprandial maximum concentration (Cmax) of plasma glucose following sucrose load with (Day 1) and without acarbose (Day 0)

Diabetes Mellitus, Type II

5 mg Glipizide/500 mg Metformin Hydrochloride Tablets, Non-Fasting

NCT00834587Phase 1COMPLETED
Sponsor

Teva Pharmaceuticals USA

Enrollment

40

Started

2004

Primary outcome

Cmax (Maximum Observed Concentration) - Glipizide in Plasma

Healthy

A Study to Evaluate the Pharmacokinetics and Safety Between "BR3006" and Co-administration of "BR3006A", "BR3006B", and "BR3006C" in Healthy Adult Volunteers (Fed)

NCT07083401Phase 1RECRUITING
Sponsor

Boryung Pharmaceutical Co., Ltd

Enrollment

40

Started

2025

Primary outcome

Pharmacokinetic variable - AUCt

Diabete Mellitus

Relative Bioavailability of Two Different Batches of a Linagliptin / Metformin Combination Tablet in Healthy Volunteers

NCT01216397Phase 1COMPLETED
Sponsor

Boehringer Ingelheim

Enrollment

40

Started

2010

Primary outcome

Linagliptin: Maximum Measured Concentration (Cmax)

Healthy

Fasting Study of Metformin Hydrochloride ER Tablets 750 mg and Glucophage® XR Tablets 750 mg

NCT00648518Phase 1COMPLETED
Sponsor

Mylan Pharmaceuticals Inc

Enrollment

36

Started

2003

Primary outcome

Bioequivalence

Healthy

Effect of BMS-986165 on the Blood Levels of Metformin

NCT04671953Phase 1COMPLETED
Sponsor

Bristol-Myers Squibb

Enrollment

36

Started

2020

Primary outcome

Maximum observed plasma concentration (Cmax) in plasma for metformin with and without BMS-986165

Healthy Participants

Demonstration of Bioequivalence of Empagliflozin and Metformin Given in One Tablet Compared to the Intake of Single Tablets

NCT01672788Phase 1COMPLETED
Sponsor

Boehringer Ingelheim

Enrollment

36

Started

2012

Primary outcome

Empa: Area Under the Curve 0 to Infinity (AUC0-∞)

Healthy

Bioequivalence Study of Test Product (T) of Ertugliflozin/Metformin 7.5 mg/ 1000 mg Film Coated Tablets and Reference Product (R) of Segluromet 7.5 mg/ 1000 mg Film Coated Tablets in Healthy, Adult, Human Subjects Under Fed Condition.

NCT07266779Phase 1COMPLETED
Sponsor

Humanis Saglık Anonim Sirketi

Enrollment

36

Started

2025

Primary outcome

Peak Plasma Concentration Cmax

Type 2 Diabetes

Sitagliptin and Metformin Hydrochloride Tablets 50 mg/500 mg Relative to Originator

NCT06233201Phase 1UNKNOWN
Sponsor

Bio-innova Co., Ltd

Enrollment

34

Started

2024

Primary outcome

Area under the plasma concentration-time curve from time zero to the last measurable concentration (AUC 0-t)

Healthy Subjects

A Study to Evaluate the Safety, PK of GC2129A in Healthy Volunteers Under Fed Conditions

NCT05729386Phase 1UNKNOWN
Sponsor

GC Biopharma Corp

Enrollment

34

Started

2023

Primary outcome

Pharmacokinetic (PK) parameters - Cmax

Healthy Volunteers

A Relative Bioavailability Study of Metformin HCl 500 mg ER Tablets Under Fasting Conditions

NCT00865839Phase 1COMPLETED
Sponsor

Actavis Inc.

Enrollment

32

Started

2002

Primary outcome

Rate and Extend of Absorption

Healthy

A Study in Healthy Men to Test Whether Zongertinib Influences the Amount of 4 Other Medicines (Dabigatran, Rosuvastatin, Metformin, and Furosemide) in the Blood

NCT06504862Phase 1COMPLETED
Sponsor

Boehringer Ingelheim

Enrollment

32

Started

2024

Primary outcome

Part 1: Area Under the Concentration-time Curve of Dabigatran in Plasma Over the Time Interval From 0 Extrapolated to Infinity (AUC0-∞)

Healthy

Bioequivalence of Metformin Under Fed Conditions After Administration of Linagliptin / Metformin Fixed Dose Combination Tablet and Single Tablets

NCT01581931Phase 1COMPLETED
Sponsor

Boehringer Ingelheim

Enrollment

32

Started

2012

Primary outcome

Area Under Curve From 0 to tz Hours (AUC0-tz) of Metformin

Healthy

Sapanisertib and Metformin in Treating Patients With Advanced or Metastatic Relapsed or Refractory Cancers

NCT03017833Phase 1COMPLETED
Sponsor

M.D. Anderson Cancer Center

Enrollment

31

Started

2018

Primary outcome

Incidence of serious adverse events

Advanced Malignant Solid NeoplasmMetastatic Malignant Solid NeoplasmRecurrent Malignant Solid NeoplasmRefractory Neoplasm

Study to Evaluate the Effect of Naltrexone and Bupropion Combination on the Pharmacokinetics of Metformin in Healthy Participants

NCT02745912Phase 1COMPLETED
Sponsor

Orexigen Therapeutics, Inc

Enrollment

30

Started

2016

Primary outcome

Cmax: Maximum Observed Plasma Concentration for Metformin Following a Single Dose of Metformin Administered Alone

Healthy Subjects

Bioequivalence Study of of Metformin HCl From Gleptomet 50/1000 mg F.C.Tablets (EVA Pharma, Egypt) and Janumet 50/1000 mg F.C.Tablets (Merck Sharp & Dohme, The Netherlands)

NCT05798715Phase 1COMPLETED
Sponsor

Genuine Research Center, Egypt

Enrollment

30

Started

2022

Primary outcome

Cmax

Healthy

Fasting Bioequivalence Study of 2 Metformin 1000 mg Prolonged Release Tablets in 28 Healthy Male and Female Volunteers

NCT05123781Phase 1COMPLETED
Sponsor

Joint Stock Company "Farmak"

Enrollment

28

Started

2019

Primary outcome

AUC0-t

Pharmacokinetics

The Effect of Metformin on Composition of Human Gut Bacteria

NCT02546050Phase 1COMPLETED
Sponsor

Oluf Borbye Pedersen

Enrollment

26

Started

2015

Primary outcome

Structural changes in the human gut microbiota.

Healthy

Comparative Bioavailability Study of Metformin/Sitagliptin 850 mg/50 mg Tablets in Healthy Male and Female Volunteers

NCT05549570Phase 1COMPLETED
Sponsor

Galenicum Health

Enrollment

26

Started

2017

Primary outcome

Peak Plasma Concentration (Cmax)

BioequivalenceDiabetes Mellitus, Type 2

BE Study of the Combinations of Gemigliptin 50mg and Metformin HCl Extended Release 2000mg in Comparison to Each Component Administered Alone

NCT02670018Phase 1UNKNOWN
Sponsor

LG Life Sciences

Enrollment

25

Started

2015

Primary outcome

AUClast

Healthy

Pharmacokinetics of Mitiglinide and Metformin in Free Combination and Fixed-dose Combination in Healthy Male Subjects.

NCT01443221Phase 1COMPLETED
Sponsor

JW Pharmaceutical

Enrollment

24

Started

2010

Primary outcome

Compare the pharmacokinetic profiles(Cmax, AUClast) of fixed-dose combination versus free dose combination in healthy volunteers

Healthy

Tolerability and Pharmacokinetics of Metformin and Metformin Extended Release (ER)

NCT00941239Phase 1COMPLETED
Sponsor

Laboratorios Silanes S.A. de C.V.

Enrollment

24

Started

2007

Primary outcome

Plasmatic drug concentration

Healthy

Influence of Semaglutide on Pharmacokinetics and Pharmacodynamics of Warfarin and Pharmacokinetics of Metformin in Healthy Subjects

NCT02022254Phase 1COMPLETED
Sponsor

Novo Nordisk A/S

Enrollment

24

Started

2013

Primary outcome

Area under the metformin plasma concentration-time curve

DiabetesDiabetes Mellitus, Type 2Healthy

Bioequivalence Study of Fixed Dose Combination of 2.5 mg Saxagliptin/850 mg Metformin Tablet Relative to 2.5 mg Onglyza and 850 mg Glucophage Tablets Co-Administered

NCT01068743Phase 1COMPLETED
Sponsor

AstraZeneca

Enrollment

24

Started

2010

Primary outcome

Saxagliptin Pharmacokinetic (PK) Parameter Area Under the Plasma Concentration Versus Time Curve From Time 0 Extrapolated to Infinity (AUC[0-inf])

Type 2 Diabetes Mellitus

Bioequivalence Study of Saxagliptin and Glucophage Combination Formulations in Healthy Subjects (A)

NCT00899470Phase 1COMPLETED
Sponsor

AstraZeneca

Enrollment

24

Started

2009

Primary outcome

Saxagliptin Mean Maximum Observed Plasma Concentration (Cmax)

Type 2 Diabetes Mellitus

Effect Of CP-690,550 On The Pharmacokinetics Of Metformin In Healthy Volunteers

NCT01405118Phase 1COMPLETED
Sponsor

Pfizer

Enrollment

24

Started

2011

Primary outcome

AUCinf (Area under the plasma concentration-time profile from time zero extrapolated to infinite time) of metformin

Rheumatoid Arthritis

A Trial of Pembrolizumab and Metformin Versus Pembrolizumab Alone in Advanced Melanoma

NCT03311308Phase 1ACTIVE_NOT_RECRUITING
Sponsor

Yana Najjar

Enrollment

23

Started

2018

Primary outcome

Ki-67 proliferation index in T cell

Advanced Melanoma

Influence of HRS9531 on Pharmacokinetics of Metformin in Healthy Subjects

NCT06654960Phase 1COMPLETED
Sponsor

Fujian Shengdi Pharmaceutical Co., Ltd.

Enrollment

20

Started

2024

Primary outcome

Area under the concentration versus time curve (AUC) of metformin from dosing time (0) to tau (dosing interval) (AUCtau) after 3.5 days.

Type 2 Diabetes

A Drug-drug Interaction Study Between Daclatasvir and Metformin

NCT02565862Phase 1COMPLETED
Sponsor

Radboud University Medical Center

Enrollment

20

Started

2016

Primary outcome

Area Under the Curve (AUC)

Hepatitis CDiabetes MellitusInsulin Resistance

A Study to Evaluate the Interaction of LX4211 and Metformin in Healthy Subjects

NCT01292993Phase 1COMPLETED
Sponsor

Lexicon Pharmaceuticals

Enrollment

18

Started

2011

Primary outcome

Plasma concentration of LX4211 and metformin after concurrent single-dose administration

Type 2 Diabetes Mellitus

Pharmacometabolomics of Andrographis Paniculata And Metformin In Healthy Volunteers Under Fasting Condition

NCT04161404Phase 1UNKNOWN
Sponsor

University of Malaya

Enrollment

18

Started

2019

Primary outcome

Area under the plasma concentration-time curve (AUC) of Andrographis paniculata

PharmacokineticsMolecular Mechanisms of Pharmacological Action

Bioequivalence Study to Compare Metformin / Vildagliptin Versus Galvumet®

NCT06073600Phase 1COMPLETED
Sponsor

Reseach Laboratory of Clinical and Experimental Pharmacology

Enrollment

18

Started

2022

Primary outcome

Cmax

Fed Conditions

Drug-Drug Interaction Study to Evaluate the Effect of PF-06865571 on Metformin Pharmacokinetics

NCT03593707Phase 1COMPLETED
Sponsor

Pfizer

Enrollment

18

Started

2018

Primary outcome

Maximum Observed Plasma Concentration (Cmax) of Metformin (in absence of PF-06865571)

Healthy Volunteers

Effect of SCH 497079 on Metabolic Parameters and Influence of Race/Ethnic Origin on Therapeutic Response (Study P05338)(COMPLETED)

NCT00673465Phase 1COMPLETED
Sponsor

Merck Sharp & Dohme LLC

Enrollment

17

Started

2008

Primary outcome

Pharmacodynamic: Change From Baseline in Mean 24-hour Plasma Glucose (AUC/Duration) at Week 4 (Part 1 - United States)

Type 2 Diabetes Mellitus

Phase IB Metformin, Digoxin, Simvastatin in Solid Tumors

NCT03889795Phase 1ACTIVE_NOT_RECRUITING
Sponsor

Danae Hamouda, MD

Enrollment

15

Started

2019

Primary outcome

Maximum Tolerated Dose and/or Recommended Dose within the tested C3 dose range

Advanced Pancreatic CancerAdvanced Solid Tumor

A Study in Healthy People to Test Whether BI 764198 Influences the Amount of Metformin in the Body

NCT07368569Phase 1COMPLETED
Sponsor

Boehringer Ingelheim

Enrollment

14

Started

2026

Primary outcome

Metformin: Area under the concentration-time (AUC) curve of the analyte in plasma at steady state over a uniform dosing interval τ (AUCτ,ss)

Healthy

Bioequivalence Study to Compare Empagliflozin/Linagliptin/Metformin HCL 25mg/5mg/1000mg Extended-Release Tablets Versus Trijardy® XR Extended Release Film Coated Tablets

NCT07213895Phase 1COMPLETED
Sponsor

Humanis Saglık Anonim Sirketi

Enrollment

14

Started

2025

Primary outcome

For Empagliflozin & Linagliptin & Metformin; Maximum concentration obtained (Cmax)

Type 2 Diabetes Mellitus (T2DM)

Drug Interactions From Simultaneous Administration Of Metformin And GSK189075 To Subjects With Type 2 Diabetes

NCT00376038Phase 1COMPLETED
Sponsor

GlaxoSmithKline

Enrollment

13

Started

2006

Primary outcome

Blood concentrations of metformin when given with GSK189075 in T2DM subjects over 3-day course Lab tests, changes in blood pressure and heart rate and heart activity on EKG machine

Type 2 Diabetes MellitusDiabetes Mellitus, Type 2

Study of Erlotinib and Metformin in Triple Negative Breast Cancer

NCT01650506Phase 1COMPLETED
Sponsor

Columbia University

Enrollment

8

Started

2012

Primary outcome

The maximum tolerated dose of metformin in combination with a fixed dose of 150 mg erlotinib daily

Breast Cancer

A Study to Assess the Effects of Savolitinib on the Pharmacokinetics of Digoxin, Rosuvastatin, Metformin, and Furosemide in Healthy Male Subjects

NCT05768360Phase 1COMPLETED
Sponsor

AstraZeneca

Enrollment

6

Started

2023

Primary outcome

Plasma Area Under Concentration-time Curve from zero to infinity (AUCinf) of the drug cocktail components

Healthy Male Subjects

Bioequivalence Study of Metformin Component of Canagliflozin and Metformin Fixed Dose Combination Immediate Release (IR) Tablet Comparing With Metformin IR Tablet Co-administered With Canagliflozin Tablet in Healthy Fed and Fasted Participants

NCT02220218Phase 1COMPLETED
Sponsor

Janssen Research & Development, LLC

Enrollment

2

Started

2014

Primary outcome

Plasma Concentration of Metformin

Healthy

Bioequivalence Study of Metformin Component of Fixed Dose Combination (FDC) Immediate Release (IR) Tablet of Canagliflozin and Metformin Compared to Metformin IR Tablet Co-administered With Canagliflozin in Healthy Fed and Fasted Participants

NCT02221180Phase 1COMPLETED
Sponsor

Janssen Research & Development, LLC

Enrollment

2

Started

2014

Primary outcome

Plasma Concentration of Metformin

Bioequivalence

Bioequivalence Study of Torrent Pharmaceuticals Ltd's Pioglitazone Hydrochloride and Metformin Hydrochloride Tablets Under Fasting Conditions

NCT01800227Phase 1COMPLETED
Sponsor

Torrent Pharmaceuticals Limited

Primary outcome

bioequivalence based on Composite of Pharmacokinetics

Healthy

Bioequivalence Study of Torrent Pharmaceuticals Ltd's Pioglitazone Hydrochloride and Metformin Hydrochloride Tablets Under Fed Conditions

NCT01800240Phase 1COMPLETED
Sponsor

Torrent Pharmaceuticals Limited

Primary outcome

bioequivalence based on Composite of Pharmacokinetics

Healthy

Bioequivalence Study of Metformin Hydrochloride Extended Release 750 mg Tablets Versus Glucophage XR® 750 mg Tablet in Healthy Volunteers Under Fasting Conditions.

NCT01089192Phase 1COMPLETED
Sponsor

Torrent Pharmaceuticals Limited

Type 2 Diabetes

Effect of Metformin on Early Pregnancy Loss in Pregnant Women With Polycystic Ovarian Syndrome

NCT02498522Early Phase 1COMPLETED
Sponsor

Ain Shams University

Enrollment

166

Started

2015

Primary outcome

Miscarriage Rate

Polycystic Ovary Syndrome

Low Starch Dietary Education Program vs. Traditional Treatment for PCOS

NCT03916263Early Phase 1COMPLETED
Sponsor

Texas Tech University Health Sciences Center

Enrollment

71

Started

2018

Primary outcome

Weight

PCOSDiet ModificationMetabolismNutrition Disorders

Metformin for Premature Infants With Bronchopulmonary Dysplasia

NCT07120971Early Phase 1RECRUITING
Sponsor

Medical College of Wisconsin

Enrollment

40

Started

2025

Primary outcome

Number of participants who tolerate metformin

Bronchopulmonary Dysplasia (BPD)

Durvalumab With or Without Metformin in Treating Participants With Head and Neck Squamous Cell Carcinoma

NCT03618654Early Phase 1COMPLETED
Sponsor

Sidney Kimmel Comprehensive Cancer Center at Thomas Jefferson University

Enrollment

38

Started

2018

Primary outcome

Immune cell polarization (Th1/Th2; M1/M2)

Head and Neck Squamous Cell CarcinomaOral Cavity Squamous Cell CarcinomaOropharyngeal Squamous Cell Carcinoma

The MetNET-2 Trial

NCT02823691Early Phase 1UNKNOWN
Sponsor

Fondazione IRCCS Istituto Nazionale dei Tumori, Milano

Enrollment

20

Started

2016

Primary outcome

incidence of SAEs and AEs

Neuroendocrine Tumors

Pharmacokinetic Drug-Drug Interaction Study to Identify Biomarkers of Kidney Transporters

NCT05365451Early Phase 1COMPLETED
Sponsor

Washington State University

Enrollment

16

Started

2022

Primary outcome

Metformin Area Under the Concentration vs. Time Curve (AUC)

InteractionEndogenous Biomarkers

Aerobic Versus Resistance Exercises on Insulin Sensitivity in Obese Patients

NCT06772857Early Phase 1ACTIVE_NOT_RECRUITING
Sponsor

Cairo University

Enrollment

3

Started

2024

Primary outcome

Change in Insulin Resistance Between Different Exercise Modes in Obese Patients

Insulin Sensitivity/Resistance

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