Selank is a synthetic peptide derived from tuftsin, a natural immunomodulatory substance. In scientific research, Selank is classified as an anxiolytic nootropic. It can regulate the levels of neurotransmitters such as serotonin and dopamine, and affect the expression of brain-derived neurotrophic factor (BDNF).

Unlike traditional anti-anxiety medications, Selank has no sedative side effects and does not cause dependence. It has been extensively studied for its ability to enhance cognitive performance, reduce mental fatigue, and stabilize mood under high-stress conditions. Its mechanism of action is to promote emotional balance and mental clarity by acting directly on the central nervous system.