A to Z / Growth hormone

GHRP-6

Also known as growth hormone releasing peptide-6.

Best known for The secretagogue known for its strong effect on hunger

Evidence★★☆☆☆

Safety dataPoorly characterised

Route Injectable (subcutaneous)

United StatesNot approved

AustraliaSchedule 4 + Appendix D cl.5 (named individually)

as at 16 September 2026

What it is

GHRP-6 is one of the earliest synthetic growth hormone secretagogues, a six-amino-acid peptide acting on the ghrelin receptor. Its early research helped open up the ghrelin pathway, and it is not approved for any indication. It is best known less for its growth hormone effect than for the intense hunger it produces.

What the full entry covers

The book carries the rest of this entry:

Where the research stands, with every claim cited
What people commonly ask, and what the research shows so far
Dosing in four labelled bands, described and not recommended
Side effects, serious risks, cautions and interactions
Questions to discuss with your doctor
How it compares with GHRP-2, Ipamorelin, Hexarelin, MK-677

Related entries

GHRP-2The older growth hormone secretagogue that raises cortisol · Evidence ★★☆☆☆
IpamorelinThe "clean" growth hormone secretagogue · Evidence ★★☆☆☆
HexarelinThe strongest-acting secretagogue, with the fastest tolerance · Evidence ★★☆☆☆
MK-677The oral growth hormone secretagogue · Evidence ★★★☆☆

A certificate of analysis tells you what is in a vial. The evidence rating above tells you whether the compound has been shown to work in humans. Neither answers the other's question. How to read a certificate of analysis.

This page describes what is known and not known about GHRP-6. It is not medical advice and not a recommendation to use it.