All peptides
LongevityModerate

SS-31

Elamipretide · MTP-131

A mitochondria-targeting peptide in late-stage clinical trials for primary mitochondrial myopathy and rare eye disease.

How it works

Concentrates in the inner mitochondrial membrane where it binds cardiolipin, stabilising cristae architecture, improving electron-transport efficiency and reducing reactive oxygen species leakage.

Structure: Tetrapeptide (D-Arg-dimethylTyr-Lys-Phe-NH2)

Reported benefits

  • Improved mitochondrial ATP output
  • Reduced oxidative stress markers
  • Fatigue improvement in mitochondrial disease trials

Practical considerations

  • Human evidence exists but for disease populations, not healthy performance
  • Costly and typically injected daily
  • Trial results have been mixed on primary endpoints

Side effects and risks

  • Injection-site reactions are common and can be significant
  • Headache
  • Dizziness

Dosing overview

Trial dosing around 40 mg daily; community protocols use less

This describes doses reported in published literature and community protocols. It is not a recommendation, and it is not a substitute for clinical supervision.

Research references

  • Karaa et al., 2018 — Elamipretide in primary mitochondrial myopathy