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№ 020

MOTS-c

Aimed at metabolism and exercise performance. A mitochondrial-derived peptide that targets metabolic flexibility, insulin sensitivity, and exercise response.

Metabolic
Evidence: Limited

MOTS-c: Aimed at metabolism and exercise performance. A mitochondrial-derived peptide that targets metabolic flexibility, insulin sensitivity, and exercise response. MOTS-c is a tiny peptide your mitochondria make.

FDA ⓘ
Not approved
WADA
Banned
Typical dose
5-10mg sub-q
Half-life ⓘ
~2 hours
Route ⓘ
Subcutaneous
Schedule
3x weekly
In plain English

MOTS-c is a tiny peptide your mitochondria make. It's tied to insulin sensitivity and metabolic flexibility. Used as a metabolic support tool during cuts or when fasting tolerance is low.

Status & legalityWhat do these mean? →
Natty? ⓘ
Grey area

Mitochondrial-derived peptide. Naturally produced, but exogenous use is a different question.

FDA ⓘ
Not approved

Not FDA approved.

Compounding ⓘ
Category 1

Compounding pharmacies may prepare under physician prescription (post Feb 2026 reclassification, pending formal FDA publication).

WADA ⓘ
Banned (S4)

Prohibited under S4.4.1 (AMPK activators) within S4 Metabolic Modulators, banned at all times. WADA names AMPK activators directly, and MOTS-c is an AMPK activator.

Prescribed ⓘ

Not prescribed in conventional medicine.

Who it's for

  • →Users on a cut wanting metabolic support
  • →People with insulin-resistance markers
  • →Endurance athletes

What to expect

  1. Week 1

    Subtle. Some report better fasted training tolerance.

  2. Week 4

    Body comp shifts in users running it alongside a cut.

  3. Week 8

    Plateau. Take a break.

Looking at MOTS-c? Your next 3 steps

  1. 1Work out your exact dose

    Vial size + BAC water turns into the exact units to draw for MOTS-c.

    Open calculator →
  2. 2See what to stack & monitor

    The companion supplements and the bloodwork worth tracking on this kind of protocol.

    Bloodwork guide →
  3. 3Save it & ask the Coach

    A free account saves your stack; membership adds the stack-aware AI Coach.

    Create free account →

How it works (mechanism)

Mitochondrial-derived peptide encoded inside the 12S rRNA region. Activates AMPK signaling (the metabolic 'energy sensor') and improves insulin sensitivity in skeletal muscle.

Dosing protocol

Members only

Stacks well with

Members only

Side effects

01Mild fatigue early
02Injection-site soreness

When NOT to use

  • ⚠Active malignancy
  • ⚠Pregnancy / nursing

Bloodwork to monitor

  • • Fasting glucose / insulin baseline + week 6

Common mistakes

  • • Running it without a clean diet (effects get masked)
  • • Skipping the cycle break

Community patterns

Members only
Free, no account needed

New to MOTS-c? Grab the starter checklist.

Drop your email and we'll send the one-page first-cycle starter checklist, plus a heads-up if MOTS-c changes legal status. No account needed.

No spam. No selling your email. Just the checklist and the occasional reclassification alert.

AI Coach, live sample
Members only
is 250mcg of bpc enough for a knee injury?
For a knee, 250 mcg sub-q daily is the standard working dose and a solid place to start. The trick with BPC is consistency, give it weeks, not days. Inject close to the joint, run it 4-6 weeks, and don't drop below 200 mcg, it tends to stop cracking the threshold reliably down there. If it hasn't moved at all by week 3, that's when adding TB-500 earns its place.
how much bac water for a 10mg reta vial?
3 mL is the standard play for a 10 mg reta vial. That's 3,333 mcg/mL, clean unit math across the titration: 2 mg = 60 units, 4 mg = 120 units, 6 mg = 180 units on a 100-unit insulin syringe. Run 2 mL instead if you want fewer, more concentrated shots (5,000 mcg/mL, so 2 mg = 40 units). Since most people titrate up over ~12 weeks, 3 mL keeps the numbers cleanest.
what should i track on bloodwork for tirzepatide?
Lipid panel, ALT/AST (liver enzymes), and an A1C, baseline before you start then every 3 months. If you've got metabolic-syndrome history, add fasting glucose and insulin so you can actually watch insulin sensitivity improve. You don't need a big hormone panel for a GLP-1.

Ask the Coach anything about MOTS-c or your own stack. This is it working.

Trained only on Pepdex content. Does the dose math, flags interactions, knows your stack. Won't push vendors, won't pretend to be a doctor.

Get the Coach, $7.99/mo →

Frequently asked

What is MOTS-c?+
MOTS-c is a tiny peptide your mitochondria make. It's tied to insulin sensitivity and metabolic flexibility. Used as a metabolic support tool during cuts or when fasting tolerance is low.
Is MOTS-c FDA approved?+
Not FDA approved.
Is MOTS-c legal?+
MOTS-c is not FDA-approved. It is sold by compounding pharmacies (with a prescription) and as "research only" by peptide vendors. Possession is generally not criminalized but distribution without authorization may be. Verify local laws.
Is MOTS-c banned by WADA?+
MOTS-c is on the WADA prohibited list under Banned (S4). Prohibited under S4.4.1 (AMPK activators) within S4 Metabolic Modulators, banned at all times. WADA names AMPK activators directly, and MOTS-c is an AMPK activator.
Are you still natty after taking MOTS-c?+
Grey area. Mitochondrial-derived peptide. Naturally produced, but exogenous use is a different question.
Do doctors prescribe MOTS-c?+
Not prescribed in conventional medicine.
What's the typical dose of MOTS-c?+
5-10mg sub-q, 3x weekly, for 4-6 weeks.
What are the side effects of MOTS-c?+
Common side effects include: Mild fatigue early; Injection-site soreness. Less common effects and full safety details are on the entry page.
How long until MOTS-c starts working?+
Subtle. Some report better fasted training tolerance.
What can you stack with MOTS-c?+
Common pairings: Retatrutide or Tirzepatide during cuts; Standalone for metabolic resets. Full stacking protocol and timing on the entry page.
Where do people get MOTS-c?+
MOTS-c is most commonly sold by research-only peptide vendors and by compounding pharmacies (the latter requires a prescription). Pepdex is not a vendor, see /coa for how to verify a Certificate of Analysis before buying from any source, and /guides/scam-vendor-spotting for vendor red flags.
MOTS-c vs 5-Amino-1MQ, which is better?+
MOTS-c vs 5-Amino-1MQ: mitochondrial peptide vs NNMT inhibitor. Two pathways into metabolic flexibility. Full head-to-head comparison: https://pepdex.co/compare/mots-c-vs-5-amino-1mq

Head-to-head with MOTS-c

Compare
MOTS-c vs 5-Amino-1MQ →

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