GHRP-6 is a peptide which comprises the AA sequence of H-His-D-Trp-Ala-Trp-D-Phe-Lys-NH2. In studies GHRP-6 has shown biological actions similar to the naturally occurring hunger stimulating peptide ghrelin.
GHRP-6 contains D-amino acids that are entirely synthetic, lacks opioid activity, and shares no sequence relation with GHRH.