Selank is a synthetic peptide analog of tuftsin, originally derived from the immune-regulating peptide found in the human body. Researchers primarily study Selank for its anxiolytic and nootropic effects, particularly in relation to cognitive function and stress response. Key findings from recent studies indicate that Selank can enhance brain-derived neurotrophic factor (BDNF) levels, which are crucial for memory and learning, and may mitigate the cognitive impairments associated with ethanol exposure and morphine withdrawal. Additionally, preclinical evidence suggests that Selank influences functional connectivity in brain regions associated with anxiety and executive functions. Despite promising results, the current research landscape is still limited, with a notable absence of extensive clinical trials to validate these findings in human populations.