MOTS-c Overview
Mechanism of Action
MOTS-c (Mitochondrial Open Reading Frame of the Twelve S rRNA type-c) is a 16-amino-acid peptide encoded in mitochondrial DNA — making it one of the few known mitochondria-derived signaling peptides. It activates AMPK (the master metabolic switch), enhances insulin sensitivity, and promotes glucose uptake independent of insulin. Remarkably, it is exercise-induced — its levels rise during physical activity.
Estimated 4–8 hours
Timing
Morning or pre-exercise
Injection Site
Subcutaneous, abdomen
Food
Can be taken fasted or with food
Common Stacks
- NAD+ — Mitochondrial function synergy
- AOD-9604 — Complementary fat metabolism
MOTS-c Dosing Protocol
Standard Protocol
8–12 weeks10–15 mg, 2–3x/week
Often dosed on non-training days. Some protocols time it pre-exercise.
MOTS-c Expected Timeline
Week 1–2
Improved exercise endurance and recovery
Week 3–4
Enhanced metabolic flexibility; better blood sugar regulation
Week 6–8
Noticeable body composition improvement; reduced visceral fat
Week 8–12
Sustained metabolic optimization; improved mitochondrial function
MOTS-c Side Effects
Mild GI discomfort (uncommon)
Temporary muscle soreness at higher doses
Very well tolerated overall
MOTS-c Research Studies
The mitochondrial-derived peptide MOTS-c promotes metabolic homeostasis and reduces obesity and insulin resistance
Lee C, Zeng J, Drew BG, et al. — Cell Metab (2015)
Discovery paper published in Cell Metabolism demonstrating MOTS-c activates AMPK, prevents age-dependent and high-fat-diet-induced insulin resistance, and improves metabolic homeostasis in mice.
PubMed: 25738459MOTS-c is an exercise-induced mitochondrial-encoded regulator of age-dependent physical decline and muscle homeostasis
Reynolds JC, Lai RW, Woodhead JST, et al. — Nat Commun (2021)
Published in Nature Communications, showed MOTS-c levels increase with exercise and that MOTS-c treatment improved physical capacity in aging mice, acting as an exercise mimetic.
PubMed: 33397966MOTS-c FAQ
Is MOTS-c an exercise replacement?
MOTS-c activates many of the same metabolic pathways as exercise (particularly AMPK activation and glucose uptake), earning it the label “exercise mimetic.” However, it’s best used as an adjunct to exercise, not a replacement. It can be especially valuable for those with limited exercise capacity.
How does MOTS-c differ from other metabolic peptides?
MOTS-c is unique because it’s encoded in mitochondrial DNA (not nuclear DNA like most peptides) and is the first identified mitochondrial-derived peptide with metabolic signaling function. It targets metabolic pathways at their source — the mitochondria.