Ipamorelin
FitnessAlso known as: Ipamorelin Acetate, NNC 26-0161
Limited EvidenceWhat is Ipamorelin?
A selective growth hormone secretagogue (GHS) considered one of the milder GH-releasing peptides. Popular in anti-aging clinics and often paired with CJC-1295. Not FDA approved.
How it works
Selectively binds to ghrelin receptors (GHS-R) in the pituitary gland to stimulate growth hormone release in a pulsatile pattern that mimics natural secretion. Unlike other GHS peptides, it does not significantly raise cortisol or prolactin levels.
What marketers claim
- ▸builds lean muscle effortlessly
- ▸burns fat without diet changes
- ▸completely safe with no side effects
- ▸as effective as HGH injections
What evidence supports
- ✓clinical studies confirm selective GH release with minimal cortisol or prolactin elevation
- ✓shown to increase bone mineral content in animal models
- ✓considered one of the better-tolerated GH secretagogues in limited human studies
Best for
Safety notes & concerns
Full safety guide →- ⚠not FDA approved for any indication
- ⚠most evidence comes from early-phase clinical trials that were not completed
- ⚠unregulated supply chain — quality and purity vary
- ⚠may cause headache, nausea, and water retention
- ⚠potential long-term risks of sustained GH elevation are unknown
Pairs well with
Use caution with
Frequently asked questions
Is Ipamorelin safer than other growth hormone peptides?
Ipamorelin is considered one of the more selective GH secretagogues because it does not significantly raise cortisol or prolactin levels, unlike GHRP-6 or GHRP-2. However, it is still not FDA approved, and long-term safety data in humans is limited.
Related fitness peptides
experimental recovery protocols under medical supervision
those exploring growth hormone optimization under medical supervision
understanding GH secretagogue research — use under medical supervision only
research context — those exploring GH secretagogues under medical supervision
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Last updated: 2025-03-21
Medical Disclaimer
The information on this site is for educational and informational purposes only. It is not intended as medical advice and should not be used to diagnose, treat, or prevent any condition. Always consult with a qualified healthcare professional before starting any new supplement, peptide, or treatment protocol.