Ipamorelin vs GHRP-6
A factual side-by-side from public databases — chemical identity, literature volume, and attributed independent-test coverage. Not a recommendation; we don't rank one above the other.
Ipamorelin is described in the provided literature as a synthetic pentapeptide (Aib-His-D-2-Nal-D-Phe-Lys-NH2) with growth hormone (GH)-releasing properties. Reviews in orthopaedics/sports medicine discuss ipamorelin as a “growth hormone secretagogue” (GH/IGF-1 signaling–associated peptide) while noting that clinical evidence for musculoskeletal uses is limited.
Growth hormone-releasing peptide 6 (GHRP-6) is a synthetic hexapeptide (also described as part of the GHRP class of GH secretagogues/peptidomimetics). Research reports include diagnostic testing of pituitary GH reserve, preclinical studies in models of organ injury, and development/validation of analytical methods for its measurement in biological matrices and transdermal formulations.
| Ipamorelin | GHRP-6 | |
|---|---|---|
| Family | Ghrelin / GH secretagogues | Ghrelin / GH secretagogues |
| Research goals | GH axis support | GH axis support |
| Amino acids | — | — |
| Molecular formula | C38H49N9O5 | C46H56N12O6 |
| Molecular weight | 711.9 g/mol | 873 g/mol |
| CAS number | 170851-70-4 | — |
| Approx. half-life | — | — |
| Regulatory status | Research only | Research only |
| WADA status | — | — |
| Evidence maturity | — | — |
| Research references | 8 | 13 |
| Vendors independently tested | 60 | 0 |
| Best test score (Finnrick) | 9.9 | — |