MOTS-c is a peptide that works inside your mitochondria. Epitalon is a longevity peptide.
They are aimed at different things: MOTS-c at energy & aging; Epitalon at aging & sleep.
| Comparison | MOTS-c MOTS c | Epitalon epithalon · epithalamin |
|---|---|---|
| How it works | How it works MOTS-c is unusual: it is coded not by the DNA in your cell nucleus but by the small separate genome inside your mitochondria. Your own cells make it, and levels fall with age. | How it works Epitalon is four amino acids long, from the Russian bioregulator tradition, based on a peptide from the pineal gland. The claims made for it are large and the evidence behind them is unusually narrow. |
| What it is | A shot people use for energy, metabolism, and healthy aging. | A longevity peptide taken in short courses for sleep and anti-aging. |
| Status | Research only | Research only |
| Typical dose | 5–10 mg per week | 5–10 mg per day |
| How often | 1-3x per week | 10-20 day courses |
| Dose comes from | Community practice | Community practice |
| Cycled? | No established schedule No established range | Courses of 10 to 20 days, repeated two or three times a year Community practice |
| What it does | ||
| Drug class | Mitochondrial peptide | Longevity peptide |
| Used for | An experimental shot people use for more energy, a faster metabolism, and healthier aging. It works on the tiny energy factories inside your cells. | A longevity peptide taken in short courses for deeper sleep and anti-aging, thought to support the body's internal aging clock. |
| Receptors hit | — | — |
| Numbers | ||
| Full dose line | 5 up to 10 mg per week (start low, increase slowly) | 5 up to 10 mg per day (start low, increase slowly) |
| Why that cycle | No published study has established how long to take this or whether a break is needed. Schedules quoted online come from vendors and forums, and different sources disagree. | The course structure is how the Khavinson protocols specify it and how it is sold. No trial has compared course dosing against continuous use, or established what the gap between courses should be. |
| Weight / effect | Not measured in a trial | Not measured in a trial |
| Chain length | 16 residues | 4 residues |
| Common vial | 10 mg | 10 mg |
| Before you start | ||
| Route | Under the skin (subcutaneous) | Under the skin or into muscle |
| Do not use if | No controlled human trials exist, so no contraindications are established Pregnancy Banned in drug-tested sport | No formal contraindications established Pregnancy |
What separates them
Proof behind the dose. Every dose here comes from community practice. Not one is backed by a published human study, which is worth knowing before you read the numbers as if they were equivalent.
What doesn't differ: Neither has a measured effect size from a published trial, so there is no number to rank them on.
What people actually report
MOTS-c
- Human safety data is limited, and there is a theoretical cancer concern.
- It is banned in drug-tested sport and under FDA review in July 2026.
- Signs of an allergic reaction
- Anything unusual, given the absence of human data
Epitalon
- Human evidence is still thin and long-term safety is not established.
- Signs of an allergic reaction
- Anything unusual, given the thin data
Side effects are what users and trials report most often, not a complete list. Anything sudden, spreading, or breathing-related is an emergency regardless of which compound caused it.
People also compare
This comparison does not cover cost, long-term safety, or how you personally will respond. Effect figures come from separate trials in different populations and are not always directly comparable to each other. Nothing here is medical advice or a recommendation to use any of these. Talk to a clinician about your own situation.