Nicotinamide Mononucleotide (NMN), also known as Beta-NMN, is a nucleotide derived from ribose and nicotinamide. It is a key intermediate in the biosynthesis of nicotinamide adenine dinucleotide (NAD+), a crucial coenzyme found in all living cells. NMN is synthesized through the enzymatic reaction of nicotinamide phosphoribosyltransferase (NAMPT) and is naturally present in small amounts in various foods, including fruits and vegetables. Researchers have been investigating NMN for its potential role in anti-aging and longevity due to its involvement in NAD+ metabolism. Studies have shown that NMN supplementation can enhance NAD+ levels, which decline with age, potentially improving mitochondrial function and energy metabolism. Researchers have observed that NMN may have beneficial effects on age-related conditions, including metabolic disorders, cardiovascular health, and neurodegenerative diseases. The mechanism of action of NMN primarily involves its conversion to NAD+, which is essential for various cellular processes, including DNA repair, gene expression regulation, and cellular energy production. NAD+ acts as a substrate for sirtuins, a family of proteins that play a role in aging and longevity. NMN's pharmacokinetic properties include a relatively short half-life, with researchers noting its rapid conversion to NAD+ in tissues. Its stability and bioavailability can vary depending on the route of administration, with oral bioavailability being limited. Current research on NMN is ongoing, with numerous preclinical and clinical studies exploring its potential health benefits. However, NMN is not yet approved as a medicinal product by major regulatory agencies, and its use is primarily confined to research settings.