Do peptides help with longevity and healthy aging?
7 peptides are graded for longevity and healthy aging on this page. The strongest grade is human RCT evidence, for semaglutide and SS-31 (elamipretide). Each one is weighed against the standard of care below, and the evidence table gives the grade and a note for every peptide.
What is the standard of care for longevity and healthy aging?
Exercise, sleep, not smoking, blood pressure and lipid control, glycemic control, vaccination, and age appropriate cancer screening. No drug is approved to slow aging.
Any peptide below should be judged against this baseline, not against doing nothing. Talk to a licensed provider before replacing or adding to an established treatment.
Which peptides have been studied for longevity and healthy aging?
Ordered by strength of evidence for this use. Grades follow the methodology; each peptide page lists the individual studies.
| Peptide | Evidence for this use | Note |
|---|---|---|
| Semaglutide | Evidence: Human RCT evidence | 20% relative reduction in major adverse cardiovascular events in SELECT; no lifespan trial. [2] [3] |
| SS-31 (elamipretide) | Evidence: Human RCT evidence | Elamipretide trials in primary mitochondrial myopathy and Barth syndrome; mixed primary endpoints; FDA approved for Barth syndrome in 2025. [4] |
| NAD+ | Evidence: Human observational evidence | Not a peptide (a coenzyme). The record's human_rct grade is for muscle and metabolic endpoints of NAD+ precursors; there is no lifespan trial, and injectable NAD+ has no outcome trials. [8] |
| MOTS-c | Evidence: Animal-only evidence | Mitochondrial derived peptide that improved metabolic homeostasis in mice; the only human data are genetic association studies that do not raise the grade; PCAC recommended it for the 503A bulks list in July 2026. [1] |
| Humanin | Evidence: Animal-only evidence | Cytoprotective in animal models; no human trials. [5] |
| Epitalon | Evidence: Animal-only evidence | Telomerase claims rest on cell and small Russian studies; PCAC recommended for 503A bulks list in July 2026. [6] |
| FOXO4-DRI | Evidence: Animal-only evidence | Senolytic effects in aged mice; no human data. [7] |
Head-to-head comparisons
Cost and access
Price ranges, lawful channels, and insurance notes for peptides graded here. State rules are in the legal guides by state.
Frequently asked questions
Which peptide has the strongest evidence for longevity and healthy aging?
Semaglutide and SS-31 (elamipretide) have the strongest evidence among the peptides graded here, at human RCT evidence. Semaglutide: 20% relative reduction in major adverse cardiovascular events in SELECT; no lifespan trial. SS-31 (elamipretide): Elamipretide trials in primary mitochondrial myopathy and Barth syndrome; mixed primary endpoints; FDA approved for Barth syndrome in 2025. [2] [3] [4]
Is any peptide FDA approved for longevity and healthy aging?
Semaglutide and SS-31 (elamipretide) are FDA approved drugs, but an approval covers only the indications on that label, so check the label before assuming it applies to longevity and healthy aging. The other peptides graded here are not FDA approved. [2] [3] [4] [9]
Has any peptide been tested in a randomized trial for longevity and healthy aging?
Yes, for semaglutide and SS-31 (elamipretide). Check each note for the population and endpoints: a randomized trial in a related group or on a surrogate marker is weaker than one on the outcome you care about. [2] [3] [4]
From the blog
- Sermorelin vs HGH: mechanism, evidence, and legal status
Sermorelin signals the pituitary to release growth hormone; HGH (somatropin) is the hormone itself. Only somatropin is FDA approved today, and anti-aging use of either is off-label.
- Epitalon human studies: what the small cohorts actually measured
Most epitalon human data come from one research group and used the pineal extract Epithalamin, not synthetic epitalon. What each study measured, plus the melatonin, telomerase, and cancer questions.
Sources
- [1]The mitochondrial-derived peptide MOTS-c promotes metabolic homeostasis and reduces obesity and insulin resistance (Cell Metab 2015)PubMed 25738459, 2015
- [2]Semaglutide and cardiovascular outcomes in obesity without diabetes. N Engl J Med 2023 (SELECT)PubMed 37952131, 2023
- [3]FDA prescribing information for Wegovy (semaglutide) injection, via DailyMedFDA, 2025
- [4]FDA prescribing information for Forzinity (elamipretide) injection, via DailyMedFDA, 2025
- [5]A rescue factor abolishing neuronal cell death by a wide spectrum of familial Alzheimer's disease genes and AbetaPubMed 11371646, 2001
- [6]Epithalon peptide induces telomerase activity and telomere elongation in human somatic cellsPubMed 12937682, 2003
- [7]Targeted apoptosis of senescent cells restores tissue homeostasis in response to chemotoxicity and agingPubMed 28340339, 2017
- [8]A pilot study investigating changes in the human plasma and urine NAD+ metabolome during a 6 hour intravenous infusion of NAD+PubMed 31572171, 2019
- [9]Drugs@FDA: FDA-approved drugs databaseFDA