A synthetic heptapeptide (7 amino acids) comprising the tuftsin sequence (Thr-Lys-Pro-Arg) with a C-terminal Pro-Gly-Pro extension. Examined in preclinical models for effects on GABAergic signalling and BDNF expression. Lyophilized, HPLC-verified, COA supplied with every batch. For laboratory research use only. Not for human consumption.