Selank is a synthetic heptapeptide derived from tuftsin, developed in peptide research for its effects on GABAergic and serotonergic systems. It has been studied as a nootropic and anxiolytic agent, with literature on modulation of GABA binding, BDNF expression in the hippocampus, and cytokine balance. Unlike classical anxiolytics, it is often reported in preclinical work to support relaxation and mental clarity without sedation. Sold for qualified laboratory and research purposes only. Not for human or animal consumption.