Metabolic / longevity

MOTS-c

A 16-amino-acid mitochondrial-derived peptide that regulates metabolic homeostasis and insulin sensitivity, largely through AMPK activation, and is often described as an 'exercise-mimetic' in preclinical work. Evidence is almost entirely animal and mechanistic; human data is minimal.

Awaiting medical review · community notes open

Common doses

IndicationRouteDoseDurationEvidence
Metabolic support / 'exercise-mimetic' (off-label, experimental)SC injectionNo established dose; community use variesExperimentalTier 5

What the community reports — MOTS-c

distilled from 29 Reddit posts

Users report MOTS-C dosed 500mcg–1000mcg daily or 2–4mg subcutaneously 3x/week, commonly stacked with growth hormone secretagogues and metabolic compounds.

Reported dose
500 mcg/day to 1,000 mcg/day; 2-4 mg SC 3x/week
Route
subcutaneous injection
Frequency
daily (Mon-Fri), or 3x/week
Side effects
lethargy, napping, brain fog, sluggishness, sleep maintenance issues, wired but tired feeling
Often stacked with
CJC/Ipamorelin, Kisspeptin, Retatrutide, KPV, GHK-Cu, BPC-157/TB-500, NAD+, Selank

Ask about MOTS-c

Get an answer from our reviewed articles and community reports, with links to the sources. Not medical advice.

Limitations · Who should NOT use this

Mechanistically interesting but clinically unproven in humans — efficacy claims rest on rodent and cell studies. No human trials establishing dose, efficacy, or safety. The 'exercise-mimetic' framing is preclinical and should not be read as a substitute for exercise. Gray-market sourcing with no oversight; purity and identity must be verified. Avoid extrapolating animal metabolic findings to humans.

Regulatory notes

Not FDA-approved; investigational. Available only through research-chemical channels. No established clinical dosing. Human pharmacokinetics and safety are not characterized.

External · Independent testing

Verify what's actually in your MOTS-c vial

Gray-market peptide vials vary widely on identity, purity, and labeled concentration. Finnrick is an independent testing platform that ships consumer-submitted samples to commercial labs and publishes every result in a free public database. Vendors cannot pay for placement or to suppress a result. We don't operate Finnrick — we link to it because post-purchase verification is the right complement to pre-purchase clinical evidence.

See MOTS-c vendor results on Finnrickr/saferpeptides community ↗

Finnrick is independent; we receive no compensation for this link. US-resident free testing as of May 2026.

Sources

  1. Lee C, et al. The mitochondrial-derived peptide MOTS-c promotes metabolic homeostasis and reduces obesity and insulin resistance. Cell Metab 2015;21(3):443-454.
  2. Reynolds JC, et al. MOTS-c is an exercise-induced mitochondrial-encoded regulator of age-dependent physical decline and muscle homeostasis. Nat Commun 2021;12(1):470.
  3. Kim KH, et al. The mitochondrial-derived peptide MOTS-c: a player in exceptional longevity? Aging Cell 2022.

More on MOTS-c

What Reddit users report — MOTS-c

Best-rated real posts mentioning MOTS-c, summarized with a short quote in the poster’s own words. Of these: 4 mixed · 1 didn't work. Anecdotal community signal — not evidence, not medical advice, and not endorsement.

  • ~ Mixedr/Peptides

    User reports rapid, excessive skin darkening after sun exposure while taking multiple peptides including MOTS-C. Seeks identification of causative agent.

    “Following are the list of peptides I am taking: 1) KPV 2) MOTS-C 3) Reta 1mg 4) Kisspeptin”
    — u/MIFunTimes123 · read on Reddit ↗
  • ✗ Didn't workr/Peptides

    Poster reports sleep maintenance issues and daytime fatigue despite taking multiple sleep-supporting peptides including MOTS-c. Seeking stack optimization.

    “I've seen anecdotal accounts of people reacting negatively to some of the peptides listed below (peptides meant to help sleep, but causing further sleep issues, instead).”
    — u/letsgO0O0O0O0 · read on Reddit ↗
  • ~ Mixedr/Peptides

    User reports lethargy and brain fog after 10 days on MOTS-c 500mcg daily (ramping to 1000mcg), alongside CJC/Ipamorelin and Kisspeptin. Seeks crowdsourced experience on whether these symptoms are normal.

    “I'm feeling really lethargic--napping a lot, which I never do, and feeling very foggy/sluggish during the day.”
    — u/Win2002 · read on Reddit ↗
  • ~ Mixedr/Peptides

    User reported 5kg weight loss since mid-June while using MOTS-c in a multi-peptide stack, but noted diminished appetite suppression effects by day 4 post-injection.

    “I'm currently down about 5kg total since mid-June, but I took my last 1mg of Reta on August 2nd, and honestly, I'm not really feeling the effects right now.”
    — u/AnotherMistborn · read on Reddit ↗
  • ~ Mixedr/Biohacking

    User is new to peptide reconstitution and currently using MOTS-C (prepared by a friend). Seeking guidance on GHK-Cu reconstitution and dosing protocols.

    — u/SensitivePlankton464 · read on Reddit ↗

Posts are pulled from public Reddit threads and summarized for context. Individual experiences vary widely and don’t predict your own results. Always consult a qualified clinician.

Community signal — MOTS-c

Recent posts and videos mentioning MOTS-c from the cron-ingested Reddit + X pipelines and the curated /experts directory. Not endorsement — directional context only.

Community experiences

0 approved · moderated

First-hand accounts from readers who've used MOTS-c. These are personal anecdotes, not clinical evidence or medical advice — every post is reviewed before it appears.

No experiences shared yet. Be the first to share yours.

Community Notes

0 approved · moderated

Structured notes from readers — context, citations, corrections, and first-hand experience. Every note is moderated before it appears. Notes do not replace medical review; they supplement it.

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