PinnyPeptide

N-Acetyl Epitalon vs SS-31 (Elamipretide)

Side-by-side comparison: effects, dosing ranges, side effects, regulatory status, and reconstitution.

Peptide A

N-Acetyl Epitalon

Longevity

Acetylated Epitalon variant — more stable, longer-acting form of the telomerase-activating tetrapeptide.

Peptide B

SS-31 (Elamipretide)

Longevity

Mitochondria-targeted tetrapeptide that restores bioenergetics by stabilizing cardiolipin.

Typical vial

5 mg

Typical dose

5,000-10,000 mcg

Half-life

Extended vs. parent Epitalon (acetylation effect)

FDA status

Not FDA approved.

Typical vial

5 mg

Typical dose

5000-50000 mcg

Half-life

~4 hours

FDA status

Not FDA approved. FDA declined approval for Barth syndrome i…

N-Acetyl Epitalon effects

  • Telomerase activation in dividing cells (extrapolated from Epitalon)
  • Telomere lengthening reported in long-term Russian studies
  • Modulation of pineal melatonin secretion
  • Reported reduction in age-related mortality in elderly study cohorts
  • Potential immune-modulating effects

SS-31 (Elamipretide) effects

  • Stabilizes cardiolipin at the mitochondrial inner membrane
  • Restores electron transport chain efficiency and ATP production
  • Reduces mitochondrial ROS production at the source
  • Protects against ischemia-reperfusion injury in heart and kidney
  • Improves age-related mitochondrial dysfunction

N-Acetyl Epitalon side effects

  • Generally well-tolerated in Russian studies (parent Epitalon)
  • Mild injection-site reactions
  • Theoretical: telomerase activation in pre-cancerous cells
  • Limited Western safety data

SS-31 (Elamipretide) side effects

  • Injection site reactions (pain, redness)
  • Mild headache
  • Transient flushing
  • Occasional dizziness

N-Acetyl Epitalon dosing ranges

Longevity research

5-10 mg · Once daily · 10-20 day cycles, repeated 2-3 times per year

SS-31 (Elamipretide) dosing ranges

Mitochondrial support and longevity

5-50 mg · Once daily (SubQ) · 4-12 weeks

Full N-Acetyl Epitalon guide → Full SS-31 (Elamipretide) guide →

N-Acetyl Epitalon vs SS-31 (Elamipretide) — common questions

What is the difference between N-Acetyl Epitalon and SS-31 (Elamipretide)?

N-Acetyl Epitalon: Acetylated Epitalon variant — more stable, longer-acting form of the telomerase-activating tetrapeptide. Typical dose 5,000-10,000 mcg. SS-31 (Elamipretide): Mitochondria-targeted tetrapeptide that restores bioenergetics by stabilizing cardiolipin. Typical dose 5000-50000 mcg. Both fall under the Longevity category.

Can you stack N-Acetyl Epitalon and SS-31 (Elamipretide)?

Stacking N-Acetyl Epitalon with SS-31 (Elamipretide) is a protocol-design question best raised with a clinician — it depends on your goal, current bloodwork, and whether both peptides target overlapping mechanisms. Both peptides should be tracked independently with separate injection sites and timing. PinnyPeptide supports multi-peptide stacks with automatic injection site rotation.

Which is dosed more frequently, N-Acetyl Epitalon or SS-31 (Elamipretide)?

N-Acetyl Epitalon is typically dosed: Once daily for Longevity research. SS-31 (Elamipretide) is typically dosed: Once daily (SubQ) for Mitochondrial support and longevity.

Are N-Acetyl Epitalon and SS-31 (Elamipretide) FDA approved?

N-Acetyl Epitalon: Not FDA approved. SS-31 (Elamipretide): Not FDA approved. FDA declined approval for Barth syndrome in 2023, requesting additional efficacy data. Multiple clinical trials ongoing for other mitochondrial indications.

Related peptide comparisons

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