Overview GHRP-6 (His-D-Trp-Ala-Trp-D-Phe-Lys-NH2) is a synthetic hexapeptide and the first-generation agonist of the ghrelin receptor (GHS-R1a), developed by Cyril Bowers and colleagues at Tulane University in the 1980s. It was the peptide whose study ultimately led to the discovery of the…