Tesamorelin vs Ipamorelin: Which GH Peptide Is Right for You?
Compare tesamorelin (FDA-approved GHRH analog) vs ipamorelin (GHRP). Mechanisms, fat loss evidence, side effects, and availability.
Bottom Line
Based on current research, tesamorelin comes out ahead in this comparison. See the full breakdown below for context — the best choice depends on your specific situation.
| Dimension | tesamorelin | ipamorelin | Notes |
|---|---|---|---|
| FDA Status | FDA Approved | Research only | Tesamorelin is FDA-approved for HIV lipodystrophy. Ipamorelin is not FDA-approved. |
| Fat Loss Evidence | Strong (visceral fat) | Moderate | Tesamorelin has clinical trial data showing visceral fat reduction. Ipamorelin evidence is preclinical. |
| Mechanism | GHRH analog | Ghrelin mimetic (GHRP) | Both stimulate GH release through different pathways. Often combined for synergistic effect. |
| Hunger Impact | Minimal | Minimal | Neither significantly affects appetite — unlike GHRP-6 or MK-677. |
| Cost | $200-400/mo | $50-100/mo | Tesamorelin is more expensive but offers stronger evidence and FDA approval. |
Learn more about each peptide
Tesamorelin
Tesamorelin is a GHRH analog FDA-approved for reducing excess abdominal fat in HIV-associated lipodystrophy. It is the only FDA-approved GH secretagogue currently available.
Ipamorelin
Ipamorelin is a selective growth hormone secretagogue that stimulates the pituitary gland to release growth hormone. It is considered the mildest and most selective GHRP with fewer side effects than alternatives.
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Reviewed by Fat Man in the Arena · Updated March 2026
Medical Disclaimer: This comparison is for informational purposes only. Individual responses vary. Always consult a qualified healthcare provider before starting any peptide protocol.