The combo
Why run them together
Retatrutide is the heaviest-hitting fat-loss peptide going (triple agonist, ~24% in trials). Aggressive cuts can drag the metabolism and endurance down — so MOTS-c is added to support metabolic flexibility and exercise capacity through the deficit.
The logic: Reta drives the fat loss, MOTS-c helps you keep training hard and keeps the engine from bogging down.
Running it together
Community-reported dosing & timing for the pair (Reddit & forums) — logged for education, not a recommendation to use:
| Component | Community protocol |
|---|---|
| Retatrutide | 1–2 mg/week to start, titrate to 4–12 mg (microdose 0.5–1 mg common) |
| MOTS-c | 5 mg 3× weekly (MWF), subQ, in 4–6 week cycles |
| Titration | Reta VERY slowly — glucagon can raise heart rate |
| Timing | Reta weekly; MOTS-c before cardio; watch resting HR & hydration |
The synergy
- Reta = maximum appetite/fat lever; MOTS-c = metabolic & endurance support.
- Aims to protect training capacity during an aggressive deficit.
- MOTS-c leans into the ‘don’t tank your metabolism’ goal of a hard cut.
Who it’s for
Experienced users running an aggressive, well-supervised cut. As always: read each compound’s full guide, and talk to a clinician before running anything.

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