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Elamipretide (SS-31)

Targets cardiolipin in the inner mitochondrial membrane to stabilize electron transport chain function.

Dr. Jonathan Snipes, MDMedically reviewed by Dr. Jonathan Snipes, MD. Last reviewed May 6, 2026.
Elamipretide (SS-31) dispensed by a licensed U.S. 503A compounding pharmacy

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Mitochondrial TargetedEnergy ProductionReduced Oxidative StressCellular Health

What It Is

SS-31 (Elamipretide) is a cell-permeable peptide that concentrates in mitochondria, specifically targeting the inner membrane where energy production occurs.

How It Works

It binds to cardiolipin, a phospholipid in the inner mitochondrial membrane, stabilizing the electron transport chain and reducing reactive oxygen species (ROS) production.

Who It's For

Those focused on mitochondrial health, cellular energy production, and reducing oxidative stress. Excellent for age-related mitochondrial decline.

Who Should Avoid It

Generally well-tolerated. Discuss with provider for any mitochondrial disease history.

Ready to add Elamipretide (SS-31)?

A licensed provider reviews every order.


Protocol & Pricing

Pharmacy Price

$100

15mg/mL, 5mL vial (75mg total)

You pay pharmacy price. No markup.

Starting Dose

33 units (5mg)

Form

Injectable vial, 5mL


Your pharmacy label will read

ELAMIPRETIDE (SS-31)

15 MG/ML (5 ML)

The label shows strength per mL, not the total in the vial.

What that means

  • 15mg/mL means 15mg in every mL.
  • The vial holds 5mL, so 15mg/mL × 5mL = 75mg in the vial.
  • Each 33-unit injection (0.33mL) gives you 4.95mg, about 15 injections per vial.

Dosing Protocol

33 units subcutaneous injection once daily, Monday to Friday. 33 units = 0.33mL × 15mg/mL = 5mg per injection. 8 to 12 weeks duration, may be cycled or extended.

Beyond Use Date

90 Days from compounding (USP <797>)

A licensed U.S. 503A compounding pharmacy assigns this date and prints it on your vial label. Always follow the label.

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A licensed provider reviews every order.


Why this dose, and what the evidence shows

From our medical director's protocol for Elamipretide (SS-31). Where the evidence is thin, it says so.

Why this dose

The protocol uses 5 mg on a five-days-on, two-days-off schedule.

This dose is substantially lower than the 40 mg daily dose used in major clinical development programs and in the FDA-approved Barth syndrome product.

The 5 mg wellness protocol comes from clinical practice rather than a human trial establishing this dose for healthy adults.


What the evidence shows

Elamipretide targets cardiolipin within mitochondria and has been studied in several mitochondrial and metabolic disease programs.

Large human trials have generally focused on patients with diagnosed medical conditions rather than healthy adults.

In primary mitochondrial myopathy, a large Phase III study using 40 mg daily did not meet its primary walking or fatigue endpoints.

Elamipretide later received FDA accelerated approval for Barth syndrome, a rare inherited mitochondrial disorder.

No published human trial has established elamipretide for longevity, general mitochondrial support, cognition, exercise recovery, or nonspecific fatigue in healthy adults.

Research also has not established the effectiveness or expected response time of the 5 mg protocol used here.

Each order also carries the $39 prescriber review. Pharmacy prices are the pharmacy's own; we add nothing to them.

Ready to add Elamipretide (SS-31)?

A licensed provider reviews every order.


Stacking Guide

Stacks Well With

NAD+ InjectableMOTS-CEpithalon

Ready to add Elamipretide (SS-31)?

A licensed provider reviews every order.


Mitochondria-targeted tetrapeptide

Read the Elamipretide (SS-31) protocol guide

Cleanest mechanism in the mitochondrial-support category. FDA approved for Barth syndrome only (Forzinity, 2025). Phase III ReCLAIM-2 missed primary endpoint. Available through 503A compounding.

Read guide

Related Peptides


Independently tested

Elamipretide (SS-31) certificate of analysis

All 2 Elamipretide (SS-31) samples tested for sterility and endotoxin passed both. Latest sample received by the lab Sep 29, 2026.

Every Elamipretide (SS-31) batch dispensed by a licensed U.S. 503A compounding pharmacy is independently tested by Eagle Analytical Services (FDA-registered, A2LA ISO 17025 accredited). Sterility testing checks that nothing grows in the sample; the USP <85> endotoxin test checks for bacterial toxins that can cause fever. Below is the lab's own report for each of the 2 most recent lots.

Lot LG342011024, received Sep 29, 2026

Sterility
PassCelsis Sterility Test. Started Sep 29, 2026, completed Oct 7, 2026
Bacterial endotoxin
PassUSP <85>. Measured <2 EU/mL, limit 350 EU/mL. Started Sep 30, 2026, completed Oct 1, 2026
Sample, as printed
ELAMIPRETIDE (SS-31) 15 MG/ML (5 ML) Injection
Lot #
LG342011024
Storage
Refrigerated
Received by lab
Sep 29, 2026
Laboratory
Eagle Analytical Services Inc., Houston, TX
Submission #
ETX-260929-0745
Signed
Alison Eng, Quality Control Manager
Scan of Eagle Analytical report ETX-260929-0745 for lot LG342011024. Opens the original PDF.
Eagle Analytical report ETX-260929-0745. Open the original PDF (opens in a new tab)

Eagle Analytical Services is an independent FDA-registered laboratory, A2LA accredited to ISO 17025, based in Houston, Texas. They have no commercial relationship with Rx Peps Direct. Rx Peps Direct prescribes; the pharmacy compounds and dispenses; Eagle tests every batch. Three separate companies. Results apply only to the tested sample as received. Browse our full quality program on the quality page.

Ready to add Elamipretide (SS-31)?

A licensed provider reviews every order.


How to get Elamipretide (SS-31) prescribed online

Elamipretide (SS-31) is available by prescription after an online medical review and dispensed for human use by a licensed 503A pharmacy. That is what separates it from research-use-only vials sold without a prescription. There is no membership, just a medical review fee per order, and automatic refills are optional.

  1. 1

    Complete a $39 medical review. Answer a short intake about your health history and your goals for Elamipretide (SS-31). The $39 fee is the only charge Rx Peps Direct collects, paid once, not a recurring subscription.

  2. 2

    A licensed provider reviews it. A US-licensed clinician reviews your intake and, if Elamipretide (SS-31) is appropriate for you, writes a patient-specific prescription. The starting dose is typically 33 units (5mg).

  3. 3

    The pharmacy compounds and ships it. A licensed 503A compounding pharmacy in Texas compounds Elamipretide (SS-31) and ships it pre-reconstituted by FedEx overnight in a reusable cooled case. Your fill is a 5mL injectable vial at 15mg/mL (75mg total), labeled "ELAMIPRETIDE (SS-31) 15 MG/ML (5 ML)", and you pay the pharmacy $100 per vial at wholesale, with no clinic markup, plus a $15 flat FedEx overnight shipping fee charged by the pharmacy.

Rx Peps Direct prescribes Elamipretide (SS-31) in the 28 states plus Washington, DC where its medical team is licensed. Start your $39 medical review or browse the full Longevity & Anti-Aging range. Comparing services first? See how Rx Peps Direct stacks up against seven other providers in our best telehealth for compounded peptides comparison.

Ready to add Elamipretide (SS-31)?

A licensed provider reviews every order.


Common questions about Elamipretide (SS-31)

What is SS-31 (Elamipretide)?
SS-31 (also known as elamipretide or Bendavia) is a 4-amino acid mitochondria-targeted peptide that binds cardiolipin in the inner mitochondrial membrane and stabilizes mitochondrial function under stress. Elamipretide is FDA approved, as Forzinity, for Barth syndrome only (accelerated approval, September 2025). For every other use it is investigational; it has been studied in clinical trials for primary mitochondrial myopathy, age-related macular degeneration, and heart failure with preserved ejection fraction.
Does SS-31 actually protect mitochondria?
Animal and ex-vivo studies consistently show SS-31 stabilizes cardiolipin, reduces reactive oxygen species production, and preserves mitochondrial ATP output under stress. Some human clinical trials have shown signal in primary mitochondrial myopathy and age-related macular degeneration, while others have not met primary endpoints. Compounding-clinic use of SS-31 draws on the mechanistic rationale; clinical efficacy in age-management contexts is still emerging.
How is SS-31 dosed?
The Rx Peps Direct dose is 33 units (5 mg) on a U-100 insulin syringe, injected subcutaneously once daily, Monday to Friday. A licensed U.S. 503A compounding pharmacy compounds SS-31 at 15 mg/mL against Rx Peps Direct prescriptions, so 33 units is 0.33 mL; your provider confirms the protocol at review.
Where do I inject SS-31?
Subcutaneously into the abdomen, upper outer thigh, or back of the upper arm using a 31-gauge, 5/16-inch (8 mm) needle on a U-100 insulin syringe. Sterile syringes are included with every Rx Peps Direct shipment.
How is SS-31 supplied?
Compounded by a licensed U.S. 503A compounding pharmacy under a patient-specific prescription. Ships pre-reconstituted and ready to inject in cold-chain packaging. Every batch is tested by Eagle Analytical Services for sterility and bacterial endotoxin; the Certificate of Analysis is published on this product page.

Ready to add Elamipretide (SS-31)?

A licensed provider reviews every order.