AC-Selank

N-acetyl Selank amidate (Thr-Lys-Pro-Arg-Pro-Gly-Pro)

AC-Selank is a stabilised form of Selank, a synthetic peptide modelled on tuftsin — a small fragment of the body's own immunoglobulin G. The N-acetyl and amidate modifications cap both ends of the molecule, slowing the enzymes that would otherwise break it down. Selank was developed in Russia as a peptide anxiolytic and has been studied chiefly for calm, focus and resilience under stress, without the sedation associated with conventional anti-anxiety agents.