Molecular information
- Length
- 9 amino acids
- Type
- Synthetic hexapeptide ghrelin-receptor agonist · GH release + appetite stimulation
His-D-Trp-Ala-Trp-D-Phe-Lys-NH₂ GHRP-6 is a synthetic hexapeptide GH secretagogue, an early-generation ghrelin-receptor agonist. Marketed grey-market alongside GHRP-2 and ipamorelin in stacking protocols. Documented pharmacology includes a marked hunger response — typically positioned as a feature, sometimes as a deal-breaker.
Claims vs evidence
- GH / IGF-1 elevation — pharmacology supports a transient peak; chronic efficacy unstudied
- Lean-mass gain — small, short-duration trials only
- Wound healing — preclinical only
Why we grade it C
Real GH-secretagogue activity backed by pharmacological studies in humans, but no completed Phase 3 in any therapeutic indication. The grey-market supply chain is not authorised in the EU. Less attractive than GHRP-2 in diagnostic-use markets because of the hunger profile.