Ipamorelin is a selective growth-hormone secretagogue and ghrelin-receptor agonist — valued in research for releasing growth hormone with minimal effect on other hormones.
What is ipamorelin?
Ipamorelin is a synthetic pentapeptide and a selective agonist of the ghrelin / growth-hormone-secretagogue receptor (GHS-R). It was developed (as NNC 26-0161) and is studied for its selectivity — a key reason it is so widely used in secretagogue research.
The selectivity that defines it
Unlike some earlier growth-hormone-releasing peptides, ipamorelin is studied for releasing growth hormone with minimal effect on cortisol, prolactin, or ACTH in research models. This selectivity is the trait most cited in the literature.
- Selective GHS-receptor signaling.
- Growth-hormone-release research with minimal off-target hormone effects.
- Combination studies with GHRH analogs.
Half-life & forms
Ipamorelin has a short research half-life (roughly two hours) and is supplied lyophilized for reconstitution.
Commonly studied alongside
Ipamorelin is classically combined with the GHRH analog CJC-1295 (overview) — the two act on complementary pathways — and is offered as the CJC-1295 + Ipamorelin blend. Reconstitute with bacteriostatic water; see the calculator.
Frequently asked questions
What is ipamorelin?
Ipamorelin is a synthetic pentapeptide and selective ghrelin-receptor (GHS-R) agonist studied as a research growth-hormone secretagogue.
Why is ipamorelin called "selective"?
In research models it is studied for releasing growth hormone with minimal effect on cortisol, prolactin, or ACTH — the selectivity most cited in the literature.
What is ipamorelin paired with?
It is most often combined with the GHRH analog CJC-1295, and is available as a blend.
What is the half-life of ipamorelin?
In research models it has a short half-life of roughly two hours.
Why researchers order from Miami Peptide Lab
- 99%+ purity, lab-tested every lot — a batch-specific COA is available on request.
- Ships from Miami and across the US in 24–48 business hours with tracking, in discreet cold-chain packaging.
- Buy-more-save-more bundle pricing on every vial, plus a reship-or-refund guarantee.
Research use only
All products referenced here are sold strictly for laboratory and research use. They are not intended for human or animal consumption, nor for any therapeutic, diagnostic, or cosmetic use, and must be handled only by qualified professionals in an appropriate research setting.
