Epitalon vs SS-31.
Quick Verdict
Epitalon is a telomerase activator primarily researched for anti-aging, longevity, sleep, while SS-31 is a mitochondrial peptide studied for energy, recovery, neuroprotection. Epitalon has substantially more indexed research (30 studies) compared to SS-31 (20 studies).
Side-by-Side Analysis
| Dimension | Epitalon | SS-31 |
|---|---|---|
| Category | Telomerase Activator | Mitochondrial Peptide |
| Mechanism | Lengthens telomeres via telomerase activation. | Mitochondrial protection. |
| Half-Life | ~2 hours | ~4 hours |
| Route | SubQ | SubQ |
| Typical Dose | 1000–1000 mcg | 4000–4000 mcg |
| Frequency | 7x/wk | 7x/wk |
| Evidence Level | Preclinical | Moderate |
| Indexed Studies | 30+ indexed | 20+ indexed |
| FDA Status | Research Only | Research Only |
| Lowest Price | $56.98 / 20mg via Bio Longevity Labs | $75.00 / 10mg via Ascension Peptides |
| Per-mg Cost | $2.85/mg | $7.50/mg |
Mechanism of Action Comparison
How Epitalon Works
Epitalon Epitalon is a synthetic tetrapeptide studied for anti-aging effects, investigated for activating telomerase to lengthen telomeres and potentially extend cellular lifespan.
Lengthens telomeres via telomerase activation. May also regulate melatonin production and circadian rhythm, and modulate antioxidant enzyme activity.
How SS-31 Works
SS-31 SS-31 (Elamipretide) is a mitochondria-targeting peptide studied for protecting heart and muscle cells from energy failure, currently in FDA Fast Track development for heart failure.
Mitochondrial protection. Selectively concentrates in the inner mitochondrial membrane where it stabilizes cardiolipin for efficient electron transport chain function.
Key Mechanistic Difference
Epitalon operates as a telomerase activator, while SS-31 functions as a mitochondrial peptide — these are fundamentally different pharmacological approaches.
Research Evidence
Epitalon
30 studies- Epitalon lifespan extension in animalsAnisimov et al. (Biogerontology): Extends lifespan in multiple animal models by 10-15% via telomerase activation and mel…Preclinical
- Epitalon activates telomerase and lengthens telomeres in human cellsKhavinson et al. demonstrate Epitalon activates telomerase catalytic subunit (hTERT) expression in human fetal fibroblas…Preclinical
- Epitalon geroprotective effects: 25-year comprehensive reviewComprehensive 25-year review of Epitalon's antioxidant, neuroprotective, antimutagenic, and anti-cancer properties acros…Preclinical
SS-31
20 studies- SS-31 (Elamipretide) clinical trials overviewSzeto (Br. J. Pharmacol.): Comprehensive review of elamipretide mechanism and clinical trial results in heart failure, m…Moderate
- Elamipretide stabilizes cardiolipin and cristae structureBirk et al. (Pharmaceuticals): Detailed mechanism review showing elamipretide binds cardiolipin, stabilizes mitochondria…Preclinical
- Elamipretide attenuates age-related cardiac protein modificationsStudy demonstrating elamipretide can reverse age-associated post-translational heart protein modifications, restoring mi…Preclinical
Vendor Pricing
· Affiliate links · Prices verified 2026Epitalon
2 vendorsSS-31
1 vendorAffiliate disclosure: PeptiDex may earn a commission from purchases via vendor links at no extra cost to you. See our methodology.
Frequently Asked Questions
Can I take Epitalon and SS-31 together?▼
Yes — Epitalon and SS-31 are identified as synergistic in interaction databases. They operate through complementary mechanisms and are commonly combined in research protocols.
Which has more research evidence — Epitalon or SS-31?▼
Epitalon has 30 indexed studies (highest evidence: Preclinical). SS-31 has 20 indexed studies (highest evidence: Moderate). Epitalon has a more extensive research base.
What is the price difference between Epitalon and SS-31?▼
At current verified vendor prices, Epitalon starts at $2.85/mg while SS-31 starts at $7.50/mg. Prices vary by vendor and vial size — see the full vendor comparison below.
Which is better for longevity — Epitalon or SS-31?▼
Both are researched for longevity. Epitalon addresses this via anti-aging, longevity, sleep. SS-31 approaches it through energy, recovery, neuroprotection. The optimal choice depends on your specific research protocol and which mechanism aligns with your objectives.
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Shared Research Goals
Research Use Only — Not Medical Advice
This comparison is provided for educational and research purposes only. It does not constitute medical, prescribing, or treatment advice. Clinical data cited here is sourced from published peer-reviewed trials and FDA labels. Consult a qualified healthcare professional before making any decisions about medications or research compounds. PeptiDex is an informational resource and does not sell pharmaceutical products.