Generic Peptides GHRP-6 5 and 10 mg Lyophilized Vial Options

GHRP-6, also called growth hormone releasing peptide 6, is a synthetic hexapeptide of the growth hormone secretagogue class. It is one of the met-enkephalin analogues built with unnatural D-amino acids that carry no opioid activity but strongly stimulate growth hormone release. Its sequence is His-D-Trp-Ala-Trp-D-Phe-Lys-NH2, its formula is C46H56N12O6 and its mass is about 873 g/mol. It works as a ghrelin mimetic rather than as a GHRH analogue.

It binds the ghrelin receptor on pituitary cells and triggers a pulse of growth hormone release instead of supplying the hormone from outside. Because ghrelin is the natural ligand of that receptor, GHRP-6 behaves as a synthetic ghrelin mimetic, while GHRH analogues such as sermorelin act on a completely different receptor. The two classes share no sequence relation, which is why the pulses can be studied together.

GHRP-6 has no approved human use, so there is no label-based safety profile for it. The secretagogue class as a whole has been reported to increase hunger, and animal work published in 2025 found that GHRP-6 raised food intake. Related compounds in the same class can also nudge prolactin, ACTH and cortisol, and injection-site reactions are common to the route. Treat it as an unstudied research material and handle it accordingly.

Add sterile or bacteriostatic water down the side of the vial and swirl, do not shake, then divide the milligrams on the vial by the millilitres added to read mg per mL. Keep the sealed powder at 2-8 C or -20 C and let it reach room temperature before opening. The mixed solution stays at 2-8 C and is used within about four weeks.

Yes. The WADA Prohibited List 2026 names GHRP-6 in class S2.2.4, growth hormone releasing factors, inside the GH-releasing peptides group. Substances in category S2 are prohibited at all times, both in and out of competition, so an athlete under anti-doping rules cannot use it at any point in the season. The same section also lists examorelin, GHRP-2 and ipamorelin.

All three are ghrelin receptor agonists that raise growth hormone, but they are different peptides with different selectivity and kinetics. GHRP-6 is the met-enkephalin-derived hexapeptide with the strongest appetite signal in animal work, GHRP-2 is pralmorelin, and Hexarelin is examorelin, a GHRP-6 analogue with a methylated tryptophan that is potent but shows partial tolerance on repeated exposure.

Both vial sizes are listed on this page as research material with international and U.S. domestic checkout. International shipping runs about 35 dollars with a transit window of four to ten days, the domestic option is available on the 5 mg vial, and orders are handled within one to two business days. Stock and prices are shown live on the page.