Longevity · Mitochondrial Protective

SS-31 (Elamipretide)

SS-31 (also called Elamipretide or Bendavia) is a mitochondria-targeting tetrapeptide that stabilizes cardiolipin and supports electron-transport-chain efficiency. In late-stage clinical trials for several mitochondrial diseases.

Category: Longevity Last updated 2026-05-11
SS-31 (Elamipretide) at a glance

SS-31 (also called Elamipretide or Bendavia) is a mitochondria-targeting tetrapeptide that stabilizes cardiolipin and supports electron-transport-chain efficiency. In late-stage clinical trials for several mitochondrial diseases. Mechanism: Mitochondrial-targeted tetrapeptide. Typical route: Subcutaneous. FDA status: Investigational. SS-31 has completed Phase 3 trials for primary mitochondrial myopathy (results mixed) and is studied for Barth syndrome, dry AMD, and heart failure. Not FDA-approved.

Drug classMitochondrial-targeted tetrapeptide
Half-life~5 hours
RouteSubcutaneous
Trial dose40 mg daily
FDA statusInvestigational
Available throughLimited compounding

Mechanism of action

SS-31 selectively concentrates in the inner mitochondrial membrane, binding cardiolipin and preserving the integrity of the electron transport chain. This reduces reactive oxygen species production, supports ATP synthesis, and protects against ischemia-reperfusion injury.

Dosing reference

Subcutaneous: 40 mg daily (most common clinical-trial dose). Some longevity protocols use lower doses (5-20 mg) several times per week. Cycle length varies.

Dosing information is provided for educational reference and is not medical advice. Patients should not initiate or modify any peptide regimen without consulting a licensed clinician. See our medical disclaimer.

FDA status & regulatory framework

Investigational. SS-31 has completed Phase 3 trials for primary mitochondrial myopathy (results mixed) and is studied for Barth syndrome, dry AMD, and heart failure. Not FDA-approved.

U.S. telehealth providers that work with SS-31 (Elamipretide)

#1 of 4
88/100v3.0 six-pillar rubric

Starting at $160/mo. Defy Medical is one of the providers covered in our editorial directory that dispenses or coordinates SS-31 (Elamipretide).

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#2 of 4
85/100v3.0 six-pillar rubric

Starting at $180/mo. Marek Health is one of the providers covered in our editorial directory that dispenses or coordinates SS-31 (Elamipretide).

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#3 of 4
68/100v3.0 six-pillar rubric

Starting at $199/mo. BreezeMeds is one of the providers covered in our editorial directory that dispenses or coordinates SS-31 (Elamipretide).

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#4 of 4
80/100v3.0 six-pillar rubric

Starting at $149/mo. Hone Health is one of the providers covered in our editorial directory that dispenses or coordinates SS-31 (Elamipretide).

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Frequently asked questions about SS-31 (Elamipretide)

Is SS-31 the same as Elamipretide?

Yes. SS-31, Elamipretide, and Bendavia are the same molecule. The 'Elamipretide' name is used by Stealth BioTherapeutics in clinical development.

What conditions has SS-31 been trialed for?

Phase 2/3 trials have covered primary mitochondrial myopathy, Barth syndrome, dry age-related macular degeneration, and heart failure with reduced ejection fraction. Results have been mixed across indications.

Lead Medical Researcher
Dr. Sam Saberian
Doctor of Pharmacy; leads protocol research, peptide pharmacology, and provider evaluation.
Medical Reviewer
Alen A. Schwartz, MD
Board-certified physician; reviews clinical accuracy of every published page.
Edited by
Julliana Edwards
Editorial standards, factual accuracy, and corrections workflow.