Side by side
Ipamorelin vs SS-31
Both are discussed for anti-aging & longevity. What this site records about each, side by side. Every figure is on the compound's own page with the source it came from.
| Ipamorelin | SS-31 | |
|---|---|---|
| What it is | A selective growth hormone secretagogue that prompts a short pulse of GH release. Widely used, and supported almost entirely by early pharmacology rather than outcome trials. | A mitochondria-targeting peptide that reached phase 3 and missed its primary endpoints. The most rigorously tested compound on this site, and a cautionary tale about mechanism. |
| EvidenceHow much human evidence exists, not how well it works. | Early human trials | Clinical trials |
| Regulatory statusReviewed 2026-08-12 | Not approved for human use in the United States for any indication. The FDA has identified ipamorelin as a substance raising concerns for use in compounded preparations. Material sold online is a research chemical. | Not approved for any indication. Elamipretide has been through phase 3 clinical trials that did not meet their primary endpoints. Development has continued in narrower rare-disease indications. Material sold as SS-31 is a research chemical, not the clinical product. |
| Routes | Subcutaneous | Subcutaneous |
| Half-life | 2 hours | 2.5 hours |
| Cheapest per mgVials only, read from vendors' own listings and dated on the price index. | $2.00/mg | $2.20/mg |
| Median per mg | $5.50/mg | $4.39/mg |
| Vendors with a price | 54 | 28 |
| Storage once mixed | Refrigerated at 2–8 °C. Do not freeze once mixed. | Refrigerated at 2–8 °C. Do not freeze once mixed. |
Compare two other compounds · The full price index
This page is educational. It describes what published research reports, not what you should do. Peptides discussed here are largely not approved for human use, and nothing on BioAlmanac is medical advice. Nothing here ranks these two against each other. A table can show that one has more human evidence behind it or costs less per milligram; neither of those is a recommendation, and the right comparison for any person is one their doctor makes with them.