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LONGEVITY

MOTS-C

MOTS-C (Mitochondrial Open Reading Frame of the 12S rRNA Type-C)

Mitochondrial Peptide for Exercise and Metabolic Health

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— authoritative voices whose published research informed this article

The information on this page is compiled from peer-reviewed research and is provided for educational and research purposes only. It is not medical advice, a diagnosis, or a treatment recommendation. Peptides discussed here may not be approved for human use in your jurisdiction. Always consult a qualified healthcare provider before starting, stopping, or modifying any health protocol.

Overview

What is MOTS-C?

MOTS-C (Mitochondrial Open Reading Frame of the 12S rRNA Type-C) is a mitochondrial-derived peptide consisting of 16 amino acids. It is encoded by the mitochondrial genome and plays a fundamental role in metabolic regulation, exercise physiology, and cellular energy production. MOTS-C was first identified in 2015 [1] by researchers at the University of Southern California.

MOTS-C is often referred to as an exercise mimetic because it activates many of the same metabolic pathways that are stimulated by physical exercise. It works primarily by activating AMPK (AMP-activated protein kinase), a master regulator of cellular energy balance [1]. When activated, AMPK promotes glucose uptake, fatty acid oxidation, and mitochondrial biogenesis while inhibiting energy-consuming processes.

Key benefits of MOTS-C include improved insulin sensitivity, enhanced fat metabolism, increased exercise capacity and endurance, promotion of metabolic homeostasis, protection against age-related metabolic decline, and potential longevity benefits. Research has shown that MOTS-C levels naturally decline with age, which may contribute to age-related metabolic dysfunction.

MOTS-C has also shown promise in protecting against diet-induced obesity, improving glucose tolerance, and enhancing physical performance in preclinical studies. It is gaining popularity in the longevity and biohacking communities as a peptide that supports healthy aging at the cellular level.

Research Supply

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Protocol

Dosage Guide

Route: Subcutaneous injection

Dosing Schedule

PeriodDose
Standard5 mg, 3-5 times per week
Conservative5 mg, 3 times per week
Intensive10 mg, 3-5 times per week

Reconstitution

VIAL SIZE10 mg
WATER VOLUME2 mL
CONCENTRATION5 mg/mL
Each 0.1 mL (10 units on a U-100 insulin syringe) = 0.5 mg

Injection Volumes

DoseVolumeSyringe Units
5 mg1.0 mL100 units
10 mg2.0 mLUse two injections

Cycling Protocol

ON PERIOD

4-8 weeks

OFF PERIOD

2-4 weeks

Some practitioners advocate for lower-dose, longer-term use with periodic breaks for longevity protocols.

Administration Tips

  • Inject subcutaneously in the abdomen, thigh, or upper arm
  • Can be taken at any time of day; some prefer pre-workout for enhanced exercise performance
  • Rotate injection sites
  • Store reconstituted solution refrigerated and use within 28 days
Safety

Risks & Side Effects

Commonly Reported

Injection site discomfort or rednessMild nauseaTemporary flushing or warmthHeadache (uncommon)

Serious Risks

Hypoglycemia

MOTS-C enhances glucose uptake and insulin sensitivity; individuals on diabetes medications should monitor blood sugar closely.

Allergic reactions

As with any injectable peptide.

Unknown long-term effects

MOTS-C was only discovered in 2015; long-term safety data in humans is still being established.

Related Research

Related Peptides

Expert Voices

Experts Covering MOTS-C

Dr. William A. Seeds

MD -- Regenerative Medicine Pioneer

Jay Campbell

Health Optimization Author and Peptide Advocate

Dr. Ian W. Hamley

Diamond Professor of Physical Chemistry -- University of Reading

Dr. Peter Attia

MD -- Longevity Physician and Author

Dr. David A. Sinclair

PhD -- Harvard Geneticist, Aging Biology

LEGAL DISCLAIMER

The information provided on this page is for educational and informational purposes only and is not intended as medical advice. MOTS-C has not been approved by the FDA for any medical condition. Always consult with a qualified healthcare professional before starting any peptide therapy. Individual results may vary. Peptides Institute is not responsible for any adverse effects resulting from the use of information provided on this site.

Frequently Asked Questions

What is MOTS-C?
MOTS-C (Mitochondrial Open Reading Frame of the 12S rRNA Type-C) is a 16-amino acid peptide encoded by the mitochondrial genome, first identified in 2015 [1] at the University of Southern California. Unlike other peptides encoded in nuclear DNA, it originates from the mitochondria. It acts as a metabolic regulator and is often called an exercise mimetic because it activates pathways similar to physical exercise.
How does MOTS-C work?
MOTS-C primarily activates AMPK (AMP-activated protein kinase), the master regulator of cellular energy balance. AMPK activation promotes glucose uptake by muscle cells, stimulates fatty acid oxidation, encourages mitochondrial biogenesis, and suppresses energy-wasting pathways. MOTS-C also enters the cell nucleus under stress conditions, directly regulating gene expression related to metabolism and stress response.
What are the benefits of MOTS-C?
Research on MOTS-C documents improvements in insulin sensitivity, enhanced fat metabolism, increased exercise capacity and endurance, protection against diet-induced obesity, and metabolic homeostasis. It is also studied for anti-aging applications because MOTS-C levels naturally decline with age, and this decline may contribute to age-related metabolic dysfunction and reduced physical performance.
What is the MOTS-C dosage?
Research protocols most commonly use 5 mg injected subcutaneously three to five times per week. Conservative protocols start at 5 mg three times weekly; more intensive protocols use 10 mg three to five times weekly. Pre-workout administration is popular for those targeting performance enhancement, though the timing is flexible. Standard cycles run four to eight weeks.
What are MOTS-C side effects?
MOTS-C is generally considered well-tolerated in research contexts. Reported side effects include injection site discomfort, mild nausea, temporary flushing, and occasional headache. The primary serious concern is hypoglycemia, as MOTS-C enhances glucose uptake and insulin sensitivity. Individuals on diabetes medications or insulin should monitor blood glucose carefully.
Does MOTS-C decline with age?
Yes. Research has shown that circulating MOTS-C levels naturally decline with aging. This decline correlates with reduced metabolic efficiency, decreased insulin sensitivity, and diminished exercise capacity observed in older adults. Some longevity researchers hypothesize that restoring MOTS-C levels may slow aspects of metabolic aging, though human clinical data is still limited.
Is MOTS-C an exercise mimetic?
MOTS-C is frequently described as an exercise mimetic because it activates AMPK and several other metabolic pathways that are engaged during physical exercise. Animal studies show improved endurance, enhanced fat oxidation, and better glucose metabolism in MOTS-C-treated subjects. It does not replicate all benefits of exercise but does share key molecular signaling with exercise-induced adaptations.

References

  1. Lee C, Zeng J, Drew BG, et al.. The mitochondrial-derived peptide MOTS-c promotes metabolic homeostasis and reduces obesity and insulin resistance. Cell Metab. 2015. PMID 25738459
  2. Kim KH, Son JM, Benayoun BA, et al.. The Mitochondrial-Encoded Peptide MOTS-c Translocates to the Nucleus to Regulate Nuclear Gene Expression in Response to Metabolic Stress. Cell Metab. 2018. PMID 29983246
  3. Reynolds JC, Lai RW, Woodhead JS, et al.. MOTS-c is an exercise-induced mitochondrial-encoded regulator of age-dependent physical decline and muscle homeostasis. Nat Commun. 2021. PMID 33473109