Best Place to Buy SS-31 in 2026
Short answer: Ascension Peptides (Bureau Score 4.1), the Bureau's first choice for SS-31. Below is why, the three alternatives worth knowing, and what to check before any order. SS-31 is sold by these stores for laboratory research use only, not for human use. It is also known as elamipretide.
Bureau pick
Ascension Peptides
Bureau Score 4.1 · Read the review
- Lab proof: Two dated third-party COAs per product (Kovera Labs, MZ Biolabs). No refunds.
- Price: From $8.00 per mg: $79.99 for a 10 mg vial, list price read 1 November 2026, before any code.
- Shipping: Flat $15 UPS shipping, US only. All sales final.
Our link: 50% off every order
What to know before buying SS-31
SS-31 is elamipretide (also coded MTP-131 and Bendavia), a synthetic tetrapeptide, D-Arg-Dmt-Lys-Phe-NH2, that targets the inner mitochondrial membrane by binding cardiolipin. It is studied in mitochondrial disease, heart failure, neurodegeneration and muscle weakness.
Elamipretide is FDA approved: on 19 September 2025 the FDA granted accelerated approval to Forzinity (elamipretide hydrochloride, Stealth BioTherapeutics) to improve muscle strength in Barth syndrome patients weighing at least 30 kg. That is a prescription drug; SS-31 vials from research vendors are not the approved product and are sold for laboratory research use only.
- What to match on the certificate: Match the identity line to C32H49N9O5, average molecular weight 639.8 (monoisotopic 639.39), the free peptide; salt forms such as acetate, TFA or hydrochloride weigh more, so check which form the certificate reports. Look for HPLC purity and mass spec identity on the same lot number as the vial.
- Vial sizes: Research stores sell it as 10 mg and 50 mg vials; the 50 mg vial is usually far cheaper per mg, so compare the same size.
- What it costs: 6 stores the Bureau reviews list SS-31; on 1 November 2026 the in-stock list prices ran from $3.60 per mg (PSPeptides, 50 mg vial) to $8.00 per mg (Ascension Peptides, 10 mg vial), before any code.
- Storage: Suppliers of the reference compound state the powder keeps 3 years at -20 C, and a stock solution 1 month at -20 C or 1 year at -80 C.
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Match me in 60 secondsThe alternatives
Each one stocks SS-31 and has been through the Bureau's vendor review. Listed in the Bureau's own vendor order, not by price.
Alternative 1
NextgenPeps
Under evaluation · Read the review
- Lab proof: Public COA library; the sample reports the Bureau was sent are third-party with batch numbers. Not yet tested by the Bureau.
- Shipping: Ships inside the US in 1 to 5 days, and to Canada from a Canadian warehouse.
Code PEPTIDEBUREAU: 10% off
Alternative 2
Aurelia Research
Bureau Score 3.5 · Read the review
- Lab proof: ILS Laboratories COA for every strength, confirmed on the lab's portal; HPLC only.
- Price: From $6.00 per mg: $59.99 for a 10 mg vial, list price read 1 November 2026, before any code.
- Shipping: US store ships from US stock; no published carrier, cost or delivery time.
15% off a first order, applied automatically through our link
Alternative 3
PSPeptides
Bureau Score 3.9 · Read the review
- Lab proof: Batch COA on every product page; ships outside the US.
- Price: From $3.60 per mg: $179.99 for a 50 mg vial, list price read 1 November 2026, before any code.
- Shipping: Ships from the US, and also to Canada, the EU, the UK and Australia.
Code PEPTIDEBUREAU: 10% off
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Side by side
| Vendor | Bureau rating | Lowest price per mg | Reader deal |
|---|---|---|---|
| Ascension Peptides | Bureau Score 4.1 | $8.00/mg | Our link: 50% off every order |
| NextgenPeps | Under evaluation | Not tracked | Code PEPTIDEBUREAU: 10% off |
| Aurelia Research | Bureau Score 3.5 | $6.00/mg | 15% off a first order, applied automatically through our link |
| PSPeptides | Bureau Score 3.9 | $3.60/mg | Code PEPTIDEBUREAU: 10% off |
Prices are list prices for single vials, read from each store by the Bureau's Vendor Watch on 1 November 2026, before any code. Prices change daily.
How the Bureau picks
The pick is the vendor at the top of the Bureau's vendor list that stocks SS-31. Scores come from the scorecard, which weighs lab documentation, consistency, shipping and price, and a vendor cannot buy a score. Before any order, match the lot number on the vial to a certificate from a named third-party lab. More in the vendor scorecard and the SS-31 guide.
Where-to-buy guides for other compounds, built the same way: 5-Amino-1MQ, AOD-9604, ARA-290, BPC-157, CJC-1295 and Ipamorelin, Cagrilintide, DSIP, Epitalon, GHK-Cu, GHRP-6, IGF-1 LR3, Ipamorelin, KPV, Kisspeptin, LL-37, MOTS-c, Melanotan 2, NAD+, PT-141 (Bremelanotide), Pinealon, Selank, Semaglutide, Semax, Sermorelin, TB-500, Tesamorelin, Thymosin Alpha-1, VIP.
Frequently asked questions
Where is the best place to buy SS-31?
The Bureau pick is Ascension Peptides (Bureau Score 4.1). Two dated third-party COAs per product (Kovera Labs, MZ Biolabs). No refunds. Alternatives that stock it: NextgenPeps, Aurelia Research, PSPeptides.
Is there a discount code for SS-31?
Reader deals checked by the Bureau: Ascension Peptides, Our link: 50% off every order; NextgenPeps, Code PEPTIDEBUREAU: 10% off; Aurelia Research, 15% off a first order, applied automatically through our link; PSPeptides, Code PEPTIDEBUREAU: 10% off.
How do I check a SS-31 vendor before ordering?
Match the batch or lot number on the vial to a certificate from a named third-party lab, check the test date, and look for identity (mass spec) as well as purity (HPLC). The Bureau's scorecard records which vendors do this.
Is SS-31 FDA approved?
Yes, as elamipretide: the FDA granted accelerated approval to Forzinity on 19 September 2025 for Barth syndrome in patients weighing at least 30 kg. Research vials sold as SS-31 are not that approved product.
Is SS-31 the same as elamipretide?
Yes. SS-31 is the original code name of elamipretide, which has also been called MTP-131 and Bendavia.
Sources
- Elamipretide: A Review of Its Structure, Mechanism of Action, and Therapeutic Potential, Int J Mol Sci 2025 (PMID 39940712), read 1 November 2026
- PubChem compound 11764719 (elamipretide): formula, weights, synonyms, read 1 November 2026
- openFDA Drugs@FDA search for elamipretide, read 1 November 2026
- FDA label, Forzinity (openFDA), read 1 November 2026
- Drugs.com, FDA Grants Accelerated Approval to Forzinity, read 1 November 2026
- Selleckchem, Elamipretide (SS-31) product page (storage), read 1 November 2026
Peptide Bureau earns a commission on orders placed through the buttons on this page, at no extra cost to you. Reader codes were checked on each vendor's cart; offer terms are the vendor's and can change. See disclosures.