Compound hub
GHRP-2 and GHRP-6
GHRP-2 (also called pralmorelin) and GHRP-6 are two lab-made peptides, each a short chain of six amino acids. Both act on the body's ghrelin receptor and prompt the release of growth hormone. This hub explains them in plain English, using journal papers, a Japanese drug label, regulator records and sport rules. It also says clearly where no human study exists.
Record card
| Common names | GHRP-2 (pralmorelin) and GHRP-6 |
|---|---|
| Class | Growth hormone secretagogues: synthetic hexapeptides (six amino acids each) that act at the ghrelin receptor |
| GHRP-6 sequence | His-D-Trp-Ala-Trp-D-Phe-Lys-NH2 (Bowers et al., 1992) |
| GHRP-2 sequence | Not taken from an opened paper for this hub, so it is not printed here |
| GHRP-6 serum half-life in men | 20 minutes for immunoreactive GHRP (Bowers et al., 1992) |
| Pralmorelin terminal half-life, 18 healthy men | About 0.42 to 0.69 hours after intravenous administration (Japanese prescribing information, revised July 2022) |
| Approved use of pralmorelin | A diagnostic for growth hormone secretion failure in Japan; sales began February 2005 (Japanese prescribing information) |
| Poisons Standard, October 2026 | Individual Schedule 4 entries for both, each also in Appendix D, clause 5 (F2026L01327) |
| FDA 503B bulks list | Category 2: GHRP-2 (two named routes) and GHRP-6 (FDA list, updated 21 March 2025) |
| WADA 2026 Prohibited List | Named at S2.2.4; prohibited at all times |
Questions answered here
05- GHRP-2 and GHRP-6 side effects: what the Japanese label, the FDA and the TGA recordWhat is recorded about GHRP-2 (pralmorelin) and GHRP-6 safety: the Japanese diagnostic label's adverse reactions and class warning, the FDA 503B category 2 listing, and the gaps. Records only; not medical advice.Updated 2026-10-16
- GHRP-2 and GHRP-6 study findings: what the research measured, and what it did notWhat human studies of GHRP-2 (pralmorelin) and GHRP-6 measured: growth hormone release, a Japanese diagnostic approval and a one-volunteer urine study. No body-composition outcome trial was opened.Updated 2026-10-16
- How do GHRP-2 and GHRP-6 work? The ghrelin receptor and what the studies measuredHow GHRP-2 and GHRP-6 act on the ghrelin receptor to release growth hormone, what Bowers and colleagues measured in 1992, the 20-minute GHRP-6 half-life, and the pralmorelin half-life range from the Japanese label.Updated 2026-10-16
- Is GHRP-6 legal in Australia? Poisons Standard, TGA, FDA and WADA records for GHRP-2 and GHRP-6What the October 2026 Poisons Standard, the TGA, the FDA and WADA record about GHRP-2 (pralmorelin) and GHRP-6, with sources and check dates. Records only; this is not legal advice.Updated 2026-10-16
- What are GHRP-2 and GHRP-6? Two growth hormone secretagogues explainedWhat GHRP-2 (pralmorelin) and GHRP-6 are: synthetic six-amino-acid peptides that act on the ghrelin receptor, and how they differ from growth hormone and from growth hormone-releasing hormone.Updated 2026-10-16
Form Laboratories supplies research-use-only reference material. Everything in this hub is an educational summary of published third-party literature. It is not medical advice, not a use instruction, and research material is not for human or animal use.