IPA
A selective growth hormone secretagogue that stimulates GH release. In swine, it did not raise ACTH or cortisol at doses >200x the GH ED50 (Raun 1998).
Regulatory status (as of Sept 2026)
Not FDA-approved. Ipamorelin is not among the peptides the 2026 PCAC voted on.
See the FDA peptide regulatory tracker · Read our July 27, 2026 dispatch on the FDA PCAC peptide vote2 studies referenced · Last reviewed Oct 1, 2026 · Reviewed by The Peptide Dispatch Editorial Team · How we research & label content
Ipamorelin is a compound with only early, small human studies so far. A selective growth hormone secretagogue that stimulates GH release.
| Half-life | 2 hours |
|---|---|
| How it's given in studies | Subcutaneous injection |
| Research stage | Phase 1 / early human |
| Dosing | Published research: Healthy men: IV infusion of 4.21-140.45 nmol/kg over 15 min, n=8 per dose detailsHealthy men: i.v. infusion of 4.21-140.45 nmol/kg over 15 min, n=8 per dose (Gobburu 1999). That is roughly 3-100 µg/kg. Rats and swine were dosed in nmol/kg (Raun 1998).Community-reportedCommunity-reported: 100–300 mcg, subcutaneous injection |
Published-research dosing is what was given in the cited studies (species and units as reported). Community-reported dosing is what users describe, not from clinical studies. Neither is a recommendation. Not medical advice.
Where each point comes from: Clinicalhuman trials and FDA labels Lab / animalrodent, cell and ex vivo studies Community-reporteduser experience and commonly used protocols, not from clinical studies
In plain terms: It acts like the hunger hormone ghrelin to trigger growth hormone release, and in animal studies it did not raise stress hormones. Selective ghrelin-receptor (growth hormone secretagogue) agonist that stimulates pituitary GH release. In swine, unlike GHRP-2 and GHRP-6, it did not raise ACTH or cortisol above GHRH-stimulated levels, even at doses over 200-fold the effective dose (Raun 1998); in healthy volunteers it produced a single episode of GH release (Gobburu 1999).
How to read this: Each item below is an effect observed in research subjects in the cited studies — think of Dexter, our stand-in research subject. These are findings from the literature, not results you should expect, and not medical advice.
Community-reportedUsers have reported doses of 100–300 mcg (subcutaneous injection). This is not a recommendation.
Side effects reported in studies are listed separately below.
Community reports are anecdotal, vary widely in product quality and purity, and are not medical advice. Talk to a licensed provider.
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| Peptide | Half-Life | Route | Research Status |
|---|---|---|---|
| Ipamorelin | 2 hours | Subcutaneous injection | Phase 1 / early human |
| CJC-1295 (no DAC) | No published PK data found | Subcutaneous injection | Preclinical (animal) |
| CJC-1295 (with DAC) | 6-8 days | Subcutaneous injection | Phase 1 / early human |
| GHRP-2 | No published PK data found | Subcutaneous injection | Phase 1 / early human |
| GHRP-6 | No published PK data found | Subcutaneous injection | Phase 1 / early human |
Values reflect figures reported in published research. Compare any peptides side-by-side →
This peptide belongs to the Growth Hormone category. View All Growth Hormone Peptides
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Dosing, half-life figures, and mechanism descriptions on this page are compiled from peer-reviewed published research, with the species and study type stated where reported. Figures labeled “Dosing used in published research” describe what was given in those studies and do not constitute dosing recommendations for any human use. Each cited paper is listed with DOI and PubMed links in the References section above. Found an error? Contact us.