SS-31 Reconstitution and Dosage: How to Mix and Measure the Peptide

SS-31 reconstitution and dosage starts with dissolving the lyophilized powder in bacteriostatic water and calculating the concentration of the finished solution. A 10 mg vial mixed with 2 mL of diluent gives 5 mg/mL, so a 1 mg dose equals 0.2 mL. SS-31, also called elamipretide, is a mitochondria-targeted research peptide that is not FDA-approved for human use in the United States.

What SS-31 Is and Why the Math Matters

The ss 31 peptide is a synthetic tetrapeptide that binds to cardiolipin on the inner mitochondrial membrane. Researchers study it in models of mitochondrial dysfunction, heart failure, and rare genetic conditions such as Barth syndrome.

SS-31 ships as a freeze-dried powder because powder is far more stable than liquid. Once diluent is added, degradation speeds up and the vial must be refrigerated.

Concentration errors are the most common mistake with this peptide. A small slip in milligrams per milliliter can turn a modest dose into a tenfold overdose.

How to Reconstitute SS-31 Peptide Powder

These steps follow the same logic as any peptide reconstitution and dosage guide. Work slowly, keep everything clean, and never rush the mixing.

1. Wash your hands, then wipe both vial stoppers with an alcohol swab and let them air-dry.
2. Draw the chosen volume of bacteriostatic water into a new syringe.
3. Insert the needle into the SS-31 vial at an angle and aim the stream at the glass wall, not directly at the powder.
4. Swirl the vial gently. Do not shake it, because shaking creates foam and can damage the peptide.
5. Wait until the solution is completely clear. A cloudy solution or visible particles means the vial should be discarded.
6. Label the vial with the date, the diluent used, and the final concentration.

Bacteriostatic water contains 0.9% benzyl alcohol, which slows bacterial growth and allows a multi-dose vial to be used for up to 28 days. Sterile water has no preservative, so a vial mixed with sterile water should be used within 24 hours.

SS-31 Reconstitution Chart: Vial Size vs. Concentration

Concentration equals the mass of peptide divided by the volume of diluent. The table below shows the most common combinations used for ss-31 peptide dosing.

Vial size	Diluent added	Concentration	Volume for a 1 mg dose
10 mg	1 mL	10 mg/mL	0.10 mL (10 units)
10 mg	2 mL	5 mg/mL	0.20 mL (20 units)
10 mg	5 mL	2 mg/mL	0.50 mL (50 units)
50 mg	5 mL	10 mg/mL	0.10 mL (10 units)
50 mg	10 mL	5 mg/mL	0.20 mL (20 units)

The right-hand column assumes a U-100 insulin syringe, where 100 units equals 1 mL. Using a U-40 syringe with those numbers would deliver 2.5 times the intended amount, so always confirm the syringe scale before drawing.

Measuring an SS-31 Peptide Injection Dosage

Research protocols usually dose by body weight, so an ss-31 peptide injection dosage depends on both the subject's weight and the concentration in the vial. A 70 kg subject given 0.1 mg/kg needs 7 mg; at 5 mg/mL, that is 1.4 mL.

Body weight	0.05 mg/kg	0.1 mg/kg	0.25 mg/kg
50 kg	2.5 mg	5 mg	12.5 mg
70 kg	3.5 mg	7 mg	17.5 mg
90 kg	4.5 mg	9 mg	22.5 mg

Larger volumes are sometimes split across two injection sites. Check the arithmetic twice before drawing, and if the syringe marking does not match the expected volume, stop and recalculate instead of guessing.

Dosing Ranges Reported in Research

Published animal work and human trials have used a wide spread of SS-31 doses. The table below summarizes the figures most often cited.

Setting	Typical dose	Route
Preclinical animal studies	0.05–0.25 mg/kg per day	Subcutaneous
Early human heart failure trials	0.05–0.25 mg/kg per hour	Intravenous infusion
Barth syndrome and PMM trials	40 mg per day	Subcutaneous

Those numbers describe controlled protocols, not personal recommendations. Human trials used pharmaceutical-grade elamipretide under medical supervision, and the results do not automatically carry over to self-administered research peptide.

Community posts, including ss-31 dosage reddit threads, often mix milligrams, micrograms, and "units" in the same sentence. That inconsistency makes forums a poor basis for a dosing decision.

Storing Reconstituted SS-31

• Keep unmixed powder in the refrigerator or freezer, protected from light.
• Store the reconstituted solution at 2–8 °C (36–46 °F).
• Do not freeze a solution made with bacteriostatic water.
• Discard multi-dose vials 28 days after the first puncture.

SS-31 is not approved by the FDA for human use, and no approved product carries dosing instructions for self-administration.

Safety Considerations Before You Start

Reported side effects in trials include injection-site reactions and, in some infusion studies, transient nausea. Anyone considering use should speak with a licensed healthcare professional first.

Reconstitution carries an infection risk as well. Use a new needle and syringe for every draw, never share a vial, and dispose of sharps in an approved container.

Related Peptides and Common Pairings

Researchers often compare SS-31 with other mitochondrial and metabolic peptides. Some stack it with MOTS-c, and interest in ss-31 and mots-c together reflects that trend, though no clinical trial has tested the combination.

The arithmetic is the same for other compounds: 5-amino-1mq reconstitution and dosage follows the identical mass-over-volume formula, so the skills transfer directly.

COMMON QUESTIONS

Frequently Asked Questions

How much bacteriostatic water should I add to a 10 mg vial of SS-31?

The answer depends on the concentration you want. Adding 1 mL gives 10 mg/mL, adding 2 mL gives 5 mg/mL, and adding 5 mL gives 2 mg/mL. More diluent means a larger injection volume for the same dose, which is easier to measure accurately but harder to inject.

What is the typical SS-31 dosage used in research?

Preclinical studies commonly use 0.05 to 0.25 mg/kg per day by subcutaneous injection. Human trials of elamipretide have used intravenous infusions in the same mg/kg per hour range and 40 mg per day subcutaneously in Barth syndrome studies. SS-31 is not FDA-approved for human use, so these figures describe research protocols only.

Does reconstituted SS-31 need to be refrigerated?

Yes. Store the reconstituted solution at 2–8 °C and protect it from light. A vial mixed with bacteriostatic water should be discarded 28 days after the first puncture, and a vial mixed with preservative-free sterile water should be used within 24 hours.