GDF-11 vs Spermidine
A side-by-side research comparison of GDF-11 and Spermidine across mechanism, dosing, half-life, benefits, side effects and research status.
Comparison table
| Attribute | GDF-11 | Spermidine |
|---|---|---|
| Full name | Growth Differentiation Factor 11 | Spermidine (Polyamine) |
| Category | Anti-Aging | Anti-Aging |
| Status | Research compound | Dietary compound (research ongoing) |
| Mechanism | Signals through activin type II receptors and SMAD2/3 to restore stem cell function, promote neurogenesis, and improve vascular remodeling in the context of aging. | 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. |
| Molecular weight | 12,500 Da | 145.25 Da |
| Half-life | 6-8 hours | Short; rapidly absorbed and distributed |
| Bioavailability | Moderate (SubQ/IV) | Oral absorption reported; also produced by gut bacteria |
| Typical dose | 0.1-0.5 mg/kg (research) | 1-10 mg per day |
| Frequency | Daily (animal studies) | Once daily |
| Route | Subcutaneous | Oral |
GDF-11 reported benefits
- Potential tissue rejuvenation
- Neurogenesis stimulation
- Cardiac hypertrophy reversal
- Muscle stem cell activation
- Vascular remodeling
Spermidine reported benefits
- Induces autophagy (cellular clean-up)
- Cardiovascular support
- Cognitive and memory support (research)
- May support hair and overall longevity
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Research and educational reference only. Not medical advice.