Longevity · ~3 min read
SS-31: What It Is, How It Works & What the Research Shows
Overview
SS-31 (elamipretide) is a mitochondria-targeting tetrapeptide. It binds cardiolipin, a lipid in the inner mitochondrial membrane, which helps stabilize the electron transport chain, improve ATP production and reduce oxidative stress. It has been studied in human trials for Barth syndrome, primary mitochondrial myopathy and heart failure, and in animal models of aging-related heart and muscle decline.
Why researchers study it
Mitochondrial function
Stabilizes the inner mitochondrial membrane to improve energy output.
Mitochondrial disease
Studied in Barth syndrome and mitochondrial myopathy.
Heart & muscle aging
Improved heart and muscle function in aged animals.
How it works
Elamipretide interacts with cardiolipin in the inner mitochondrial membrane. Research examines membrane organization and mitochondrial function; this does not itself establish a clinical benefit.
Adamantane & the blood–brain barrier
Chemically attaching an adamantane group to a peptide can increase its lipid (fat) solubility. Researchers hypothesize that this modification may help certain compounds cross the tightly regulated blood–brain barrier. The effect depends on the specific modified molecule; greater lipid solubility alone does not establish brain delivery or clinical benefit. This does not apply automatically to the unmodified peptide and is not a reconstitution additive.
What the research shows
- Mitochondrial membrane function and cardiolipin interactions are research targets.
- MMPOWER-3 evaluated walking performance and fatigue in primary mitochondrial myopathy; it did not meet either primary efficacy endpoint.
Typical protocol
Reconstitute a 10 mg vial with 1 mL bacteriostatic water for 10 mg/mL. Typical range: 2–5 mg, sometimes 10 mg 1x daily am · 5 on 2 off or daily, 4–8 weeks (max 12 weeks).
Common stacks
- SS-31 + MOTS-C — Combines mitochondrial membrane stabilization with metabolic signaling.
- SS-31 + NAD+ — Pairs electron-transport support with NAD+ supply.
Potential benefits & side effects
Potential benefits
- Improved energy and exercise capacity
- Better insulin sensitivity and metabolic markers
- Support for mitochondrial function
- Potential fat-loss support (5-Amino-1MQ, AOD-9604, SLU-PP-332)
Side effects
- Injection-site irritation
- NAD+: flushing, chest tightness or nausea if pushed too fast
- Fatigue or restlessness early in a cycle
- GI discomfort with oral compounds
Lifestyle factors
- Exercise: these compounds work alongside, not instead of, regular training — especially zone 2 cardio.
- Sleep and circadian rhythm: keep a consistent sleep schedule.
- Nutrition: whole-food diet with adequate protein; avoid chronic overeating.
- Track bloodwork (glucose, lipids, liver markers) before and during longer cycles.