Sermorelin vs Ipamorelin
Research & educational use only. This content is not medical advice. Consult a qualified healthcare professional before using any peptide compound.
Sermorelin and Ipamorelin are both growth hormone peptides that come up together constantly. This is a side-by-side comparison on the data that actually matters — evidence tier, FDA status, human trials, and how to source each safely — not hype. It is for research and educational purposes only.
Sermorelin vs Ipamorelin: side-by-side
| Sermorelin | Ipamorelin | |
|---|---|---|
| Evidence tier | Tier 2 | Tier 3 |
| FDA status | Not FDA Approved | Not FDA Approved |
| Human RCTs | 2 | 0 |
| Subjects enrolled | 150 | 0 |
| Animal studies | 20 | 20 |
| Category | growth hormone | growth hormone |
| Half-life | Short plasma half-life (minutes). | Reported plasma half-life around 2 hours in animal models. |
| Community logs | 0 | 1 |
Key differences
Sermorelin rests on stronger human evidence (Tier 2) than Ipamorelin (Tier 3) — that means more confidence its observed effects are real rather than artefacts of weaker study designs. Neither is FDA approved for human use — both are not fda approved / not fda approved and treated as research compounds in the US.
Sermorelin has 2 human trials on record (150 subjects) versus Ipamorelin's 0 (0 subjects). Evidence tiers are a shorthand for how strong that human data is — see our guide to understanding peptide evidence tiers for how to weigh them.
What is Sermorelin?
Sermorelin is a synthetic peptide corresponding to the first 29 amino acids of growth hormone-releasing hormone (GHRH 1-29). It was previously marketed in the United States (as Geref) for diagnostic and pediatric growth indications and is no longer sold as an approved product, though it remains available through… Full Sermorelin breakdown →
What is Ipamorelin?
Ipamorelin is a synthetic pentapeptide and selective growth hormone secretagogue that mimics ghrelin at the GHS-R1a receptor to stimulate pulsatile growth hormone release. It is not FDA-approved and has not been evaluated in published human efficacy randomized controlled trials; the evidence base is preclinical. It is… Full Ipamorelin breakdown →
Where to buy Sermorelin or Ipamorelin safely
Both are sold by research-chemical suppliers, not pharmacies, so the source matters as much as the compound. Before buying either, vet sellers on third-party lab testing and enforcement history in the ranked directory of trusted peptide sellers — or jump straight to vetted sources for Sermorelin or Ipamorelin. PeptidesHub does not sell either compound.
Frequently asked questions
Sermorelin and Ipamorelin are both growth hormone peptides. Sermorelin rests on stronger human evidence (Tier 2) than Ipamorelin (Tier 3) — that means more confidence its observed effects are real rather than artefacts of weaker study designs. Neither is FDA approved for human use — both are not fda approved / not fda approved and treated as research compounds in the US. See each compound's full evidence breakdown for the underlying studies.