TL;DR
MOTS-C is a peptide that's actually built from instructions hidden inside mitochondrial DNA, and the interest in it comes down to one enzyme, AMPK, that acts like the cell's energy switch. Animal studies show it can improve insulin sensitivity and protect against diet-induced weight gain, and that pathway logic is genuinely solid science. What doesn't exist yet is human dosing research, and no study has ever tested whether taking it around a training session actually does anything, so that popular idea is a guess based on mechanism, not a proven finding. There's no dosing information on this page for that reason.
Why I looked into it
MOTS-C caught my attention through the mitochondrial biology literature, particularly its relationship with AMPK, the cell's energy sensor. This is a reason for reading the research, not a recommendation to use a compound. Keith O’Beirne.
What the Research Actually Says
In the 2015 Cell Metabolism study by Lee and colleagues, MOTS-c regulated metabolic pathways linked to AMPK activation. In mice, treatment prevented age-related and high-fat-diet-related insulin resistance and diet-induced obesity. These are preclinical findings; they do not establish a human performance benefit or a training-day regimen.
Summary
MOTS-C research concerns mitochondrial signalling and AMPK. Animal and cell findings do not demonstrate a training benefit in people. No personal-use regimen follows from that mechanism.
MOTS-C is not an authorised medicine in Ireland. Advertising unauthorised human medicines is prohibited; supply and import are subject to legal restrictions. Check current HPRA and Revenue guidance.
WADA 2026 names MOTS-c under S4.4.1; it is prohibited at all times.