EVIDENCE REVIEW

What does the evidence say about MOTS-c?

MOTS-c is a small peptide the body makes from mitochondrial DNA. Researchers study it for metabolism and muscle, mostly in cells and mice. We found no published trial of MOTS-c given as a treatment to people, and FDA reports no human exposure data.

By the Peps RX editorial team · Updated 2026-09-21 · How we write

What MOTS-c is

MOTS-c is a 16-amino-acid peptide encoded in mitochondrial DNA, part of a family of “mitochondrial-derived peptides”. It circulates in the blood, and its levels change with exercise and metabolic state.

The human research

Human studies so far observe the body’s own MOTS-c. For example, blood levels rose after a bout of endurance exercise, and levels were measured in a trial of metformin in breast cancer. These are observational findings about natural levels, not evidence that taking MOTS-c does anything.

The animal and cell research

In cell and mouse studies MOTS-c has been reported to affect insulin sensitivity, exercise capacity and muscle-wasting signals. Mouse metabolism differs from ours, and doses used in mice do not translate directly to people.

Safety

FDA’s safety review says MOTS-c may pose a significant risk of immune reactions and that no human exposure data are available.

THE DETAILS MATTER

Common questions

Does MOTS-c help with weight loss?

That has not been shown in people. Mouse studies are a reason to research it, not proof of an effect.

Educational information, not medical advice. A licensed clinician decides whether any treatment is right for you. Found an error? See our corrections policy.

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