Spermidine vs SS-31 (Elamipretide)
A side-by-side research comparison of Spermidine and SS-31 (Elamipretide) across mechanism, dosing, half-life, benefits, side effects and research status.
Comparison table
| Attribute | Spermidine | SS-31 (Elamipretide) |
|---|---|---|
| Full name | Spermidine (Polyamine) | SS-31 / Elamipretide (Bendavia) |
| Category | Anti-Aging | Anti-Aging |
| Status | Dietary compound (research ongoing) | Investigational |
| Mechanism | Induces autophagy, partly by inhibiting acetyltransferase activity and mimicking caloric restriction signaling. This promotes clearance of damaged proteins and organelles, supporting cellular renewal, cardiovascular health, and cognition. | Targets cardiolipin in inner mitochondrial membrane, stabilizes cytochrome c binding, optimizes electron transfer efficiency, and reduces mitochondrial ROS by 50%. |
| Molecular weight | 145.25 Da | 640.8 Da |
| Half-life | Short; rapidly absorbed and distributed | 4-6 hours |
| Bioavailability | Oral absorption reported; also produced by gut bacteria | High (SubQ) |
| Typical dose | 1-10 mg per day | 5-40 mg |
| Frequency | Once daily | Daily |
| Route | Oral | Subcutaneous or IV |
Spermidine reported benefits
- Induces autophagy (cellular clean-up)
- Cardiovascular support
- Cognitive and memory support (research)
- May support hair and overall longevity
SS-31 (Elamipretide) reported benefits
- Mitochondrial function optimization
- Reduced oxidative stress
- Cardioprotection
- Improved exercise capacity
- Renal protection
- Cellular energy
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Research and educational reference only. Not medical advice.