MOTS-c is a mitochondrial-derived peptide studied for its role in cellular energy metabolism and exercise-related signaling. Research is still largely preclinical, with interest driven by its proposed link to metabolic and longevity pathways.
The human trial is for an analog, not MOTS-c itself
The only human clinical data in this space is for CB4211, described as "a novel analog of MOTS-c" developed by CohBar — not MOTS-c itself. Same related-but-different-molecule pattern found repeatedly across this research project.
Benefits
MOTS-c is a 16-amino-acid mitochondrial-derived peptide, encoded within the mitochondrial genome itself (the 12S rRNA region) rather than nuclear DNA. It's produced in skeletal muscle in response to exercise (in a reactive-oxygen-species-dependent manner) and is reported to act mainly through the folate-AICAR-AMPK pathway, affecting glucose metabolism, insulin resistance, and exercise adaptation. This mechanistic picture comes from animal/cell studies, not human trials of MOTS-c itself.
CB4211 (MOTS-c analog), Phase 1a/1b (healthy volunteers + NAFLD patients, 28 days, 25mg subcutaneous daily, n=11 treated vs. 9 placebo): met its primary safety outcome; liver enzymes ALT and AST were reduced 25% and 17% respectively vs. placebo in the NAFLD subgroup. Development of CB4211 was subsequently discontinued, and as of this research pass there are no active Phase 2/3 trials for MOTS-c or any MOTS-c analog.
Dosage
No dose for MOTS-c itself has been clinically established — the only human dosing data (25mg/day subcutaneous) is for the CB4211 analog, not the native peptide sold as "MOTS-c."
Side Effects
CB4211 was reported safe and well-tolerated in its Phase 1 trial. No safety data exists for MOTS-c itself in humans.
What is MOTS-c used for in research?+
Studies focus on mitochondrial function, metabolic regulation, and exercise-adaptation signaling.
Is MOTS-c FDA-approved?+
No, it is not an approved drug and is sold for research use only.
Is MOTS-c naturally occurring?+
Yes, it is encoded within mitochondrial DNA and occurs naturally in the body; the research compound is a synthesized version of that sequence.
What actually is MOTS-c — is it a normal peptide?+
Not in the usual sense — it's encoded by your mitochondrial DNA rather than your regular genome, discovered only in 2015. It's a signal your mitochondria produce themselves under stress or exercise, and production naturally declines with age.
Does exercise actually trigger it naturally?+
Yes — exercise induces your body to produce MOTS-c on its own, in muscle tissue and circulating in blood, confirmed in humans specifically, not just animal models.
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