Best SS-31 Vendors (2026)
Where to buy SS-31 (also sold as Elamipretide, Bendavia, MTP-131): the 21 vendors below are the ones we have a dated product-page price for, ranked on documentation first and price second. Nothing here is typed from memory — every number links to a date.
Research use only. Compound Review scores vendors on documentation — laboratory certificates, lot records, pricing and company identity. Nothing on this page is guidance on human or veterinary use, dosing or health outcomes.
- 12 certificates verified at the lab50mg vial$80.00−20%$64.00with code
- 2Oneday Compounds10/101 certificate verified at the lab10mg vial$34.99−37%$22.04sale $24.49, then code
- 3Peptide Giants10/101 certificate verified at the lab10mg vial$71.43−37%$44.99sale $49.99, then code
- 4Premier Bio Labs10/101 certificate verified at the lab10mg vial$55.99−10%$50.39with code
- 5Snap Peptides9/101 certificate verified at the lab10mg vial$44.00−10%$39.60with code
- 6ezPeps9/101 certificate verified at the lab50mg vial$129.99−20%$103.99with code
- Peptide Partners7/102 certificates verified at the labprice read 24 Octfree account needed to see the store10mg vial$55.00−10%$49.50with code
- PS Peptides8/102 certificates verified at the labprice read 5 Nov10mg vial$64.99−10%$58.49with code
Show the other 4 partners and their codes
- 81 certificate verified at the lab10mg vial$50.00−28%$36.00sale $40.00, then code
- 9ZC Labs7/101 certificate verified at the lab10mg vial$54.99−26%$40.49sale $44.99, then code
- 11GigaCompounds7/101 certificate opened (vendor-hosted)10mg vial$40.00−10%$36.00with code
- 12Arizen BioLabs6/101 certificate opened (vendor-hosted)50mg vial$179.99−37%$113.39sale $125.99, then code
- MyPurePeptide10/10 · 5 Nov$1.60/mg$80 list · 50mg*$64 with code
- Oneday Compounds10/10 · 8 Nov$2.45/mg$24.49 list · 10mg$22.04 with code
- Peptide Giants10/10 · 5 Nov$5.00/mg$49.99 list · 10mg$44.99 with code
- Premier Bio Labs10/10 · 1 Nov$5.60/mg$55.99 list · 10mg$50.39 with code
Per-milligram price is list price over labelled milligrams; it says nothing about what is in the vial. Code prices are list × (1 − the code's stated discount), not cart-tested against sales. We earn a commission on partner links; the rubric does not read partner status.
Where to buy SS-31: 21 vendors, ranked
Reference size 10mg — the size most of these vendors sell. Other sizes we have on record are listed per vendor.
| # | Vendor | Score | 10mg price | Other sizes | Trustpilot | Buy |
|---|---|---|---|---|---|---|
| 1 | 10/10 | not sold at 10mg | 50mg $80.00 | 4.8 247 reviews | 20% off | |
| 2 | 10/10 | $24.49$34.99Sale $2.45/mg · read 8 Nov 2026 17% since 29 Oct | 30mg $69.99 | 4.8 88 reviews | $22.04 with code, 10% off | |
| 3 | Peptide GiantsPartner Janoshik Analytical · Vanguard Laboratory | 10/10 | $49.99$71.43Sale $5.00/mg · read 5 Nov 2026 | 50mg $149.99 | 4.6 65 reviews | $44.99 with code, 10% off |
| 4 | Premier Bio LabsPartner ILS Laboratories + Freedom Diagnostics | 10/10 | $55.99 $5.60/mg · read 1 Nov 2026 | none read | 4.7 69 reviews | $50.39 with code, 10% off |
| 5 | 9/10 | $44.00 $4.40/mg · read 27 Oct 2026 | none read | 4.9 88 reviews | $39.60 with code, 10% off | |
| 6 | ezPepsPartner ILS Laboratories (also Kovera Labs, Freedom Diagnostics, Horizon Analytical) | 9/10 | not sold at 10mg | 50mg $129.99 | 4.8 249 reviews | 20% off |
| 7 | 9/10 | $58.00 $5.80/mg · read 10 Oct 2026 | 5mg $33.00 | profile removed | ||
| 8 | 9/10 | $59.99 $6.00/mg · read 5 Nov 2026 | 50mg $249.99 | profile removed | ||
| 9 | 9/10 | $85.00$125.00Sale $8.50/mg · read 1 Nov 2026 | none read | 4.6 33 reviews | ||
| 10 | 8/10 | $64.99 $6.50/mg · read 5 Nov 2026 | none read | 4.3 223 reviews | $58.49 with code, 10% off | |
| 11 | 8/10 | $40.00$50.00Sale $4.00/mg · read 8 Nov 2026 | none read | 4.8 88 reviews | $36.00 with code, 10% off | |
| 12 | 8/10 | $37.49$49.99Sale $3.75/mg · read 23 Sep 2026 | none read | 4.8 62 reviews | ||
| 13 | 7/10 | $44.99$54.99Sale $4.50/mg · read 8 Nov 2026 | none read | 3.8 2 reviews | $40.49 with code, 10% off | |
| 14 | Peptide PartnersPartner TrustPointe Analytics, Chromate, Kovera Labs, BioRegen (certificate ledger) | 7/10 | $55.00 $5.50/mg · read 24 Oct 2026 | 50mg $140.00 | profile removed | $49.50 with code, 10% off |
| 15 | 7/10 | $40.00 $4.00/mg · read 5 Nov 2026 | 40mg $100.00 | 4.8 65 reviews | $36.00 with code, 10% off | |
| 16 | ILS Laboratories (on certificates) · page credits Freedom Diagnostics | 7/10 | not sold at 10mg | 30mg $74.95 | profile removed | |
| 17 | 7/10 | $25.48$39.20Sale $2.55/mg · read 26 Oct 2026 | none read | profile removed | ||
| 18 | Horizon Analytical (also ILS Laboratories) | 7/10 | $27.99$39.99Sale $2.80/mg · read 31 Oct 2026 | none read | 4.6 451 reviews | |
| 19 | 6/10 | not sold at 10mg | 50mg $125.99 | 4.8 44 reviews | 10% off | |
| 20 | 6/10 | $49.47 $4.95/mg · read 24 Oct 2026 | none read | profile removed | ||
| 21 | 6/10 | $69.99 $7.00/mg · read 24 Oct 2026 | none read | profile removed |
What makes SS-31 different to source
SS-31 is the research-market name for elamipretide, a four-residue mitochondria-targeted peptide that has been through clinical development under a pharmaceutical sponsor. On the research market it is sold under an unusual number of house names — we have seen it listed as Peptide-31 and as a vendor-branded '-31' product — which makes catalog search unreliable and price comparison harder than it should be.
The price spread between vendors is wider for SS-31 than for most compounds, and vial sizes range from a few milligrams to tens of milligrams. That combination rewards reading the per-milligram figure rather than the headline price.
Because the compound is short and the market uses many names for it, the certificate's identity check is what confirms that a house-branded product is in fact elamipretide. The vendors at the top of this page publish certificates you can check against the issuing laboratory.
The top 3, explained
MyPurePeptide
10/10Affiliate partnerWhat we can verify
Janoshik Analytical report #223088 for BPC-157 10mg batch 10242025B2 (sample received 17 Aug, analysed 24 Aug 2026): 11.61mg measured, purity 99.635%. We opened it on the lab's own verification page (key 1GTY19EIMQE4) on 30 Sep 2026 — client, manufacturer and batch print as MyPurePeptide. A public COA directory lists 103 report records across 47 products, each with task number, verification key, report batch, the original report image and the sample photograph, plus endotoxin reports for most lots; every product page links its current report. Open catalog with sized prices (BPC-157 10mg $25; TB-500 10mg $25; GHK-Cu 100mg $35; Ipamorelin 10mg $25; Tesamorelin 10mg $40; NAD+ 500mg $35). Legal entity myPurePeptide LLC with a mailing address in Austin, Texas; Visa and American Express at checkout. Trustpilot 4.8 across 247 reviews (read 10 Oct 2026), claimed December 2025.
Net content: Report states 11.61mg measured on a 10mg label (116% — just over our 115% flag line), purity 99.635%; TB-500 #223097 11.54mg / 99.007%
Where it falls short
The printed address (12407 N Mopac Expy Ste 250 PMB 570, Austin) is a commercial mailbox, not premises — identity is awarded on the named LLC with that disclosure. The BPC-157 report measures 11.61mg on a 10mg label, 116% — just over our 115% flag line; TB-500 10mg measured 11.54mg. The vendor's own site says a report 'alone does not confirm the lot shipped'. The GLP-class pages print strike-through reference prices far above the selling price (Semaglutide 10mg 'was $399.99', now $70; Retatrutide 10mg 'was $699.99', now $80) — treat the 'you save' figures as marketing. Zelle is offered alongside cards. Returns: 7-day unopened window with a continuous unboxing video required for damage claims. A domain lookalike (mypurepeptides.com) is disclaimed on the vendor's homepage.
Oneday Compounds
10/10Affiliate partnerWhat we can verify
Read 29 October 2026 through a registered account (prices and the COA library sit behind a login). A WooCommerce store with 49 listings, sized pricing on each, all shown at 40% off a struck list price during a rebrand to 'BY ONEDAY' (BPC-157 10mg $23.99 from $39.99; TB-500 10mg $29.99; NAD+ 500mg $35.99; GHK-Cu 50mg $20.99; MOTS-c 10mg $26.99). The COA library carries 57 entries, every one with at least one lot-numbered certificate, and the links open on ILS Laboratories' own portal: the retatrutide ('OC-3RT') 10mg report COA-2026-3WBETH, lot OC-RT10-106, analysed 2 Sep 2026, reads 99.63% purity, identity retatrutide confirmed, net content 10.31 mg on a 10 mg label, with three vials averaging 10.37 mg, sterility (USP 71), endotoxin and heavy metals passed. Product pages print the lot shipping (BPC-157 10mg: OC-BPC10-104, 99.82%, 10.30 mg). Oneday Enterprises, LLC d/b/a Oneday Compounds, 2326 Washington Blvd, Fourth Floor, Ogden, Utah.
Net content: COA-2026-3WBETH (OC-3RT 10mg, lot OC-RT10-106): net content 10.31 mg on a 10 mg label, three vials 10.22 / 10.31 / 10.59 mg, purity 99.63%, identity retatrutide confirmed; BPC-157 10mg lot OC-BPC10-104 10.30 mg, 99.82%
Where it falls short
Prices and certificates need a free account (no purchase), which since 1 November 2026 no longer costs the ungated point. All sales are final, with damage to be reported within 24 hours; checkout takes cards, but Zelle carries a 5% discount and the FAQ still lists only Zelle, Cash App, Venmo and ACH. The product pages say 'up to 12X' (ILS lots) and the cart says 'up to 16X'; both hold, because Oneday's Ethos Analytics reports carry a wider panel (checked on CJC-1295/Ipamorelin lot OC-CJI10-104, 1 November 2026). GLP-class products are sold by code (OC-2TZ, OC-3RT); the lab confirms retatrutide for OC-3RT.
Peptide Giants
10/10Affiliate partnerWhat we can verify
Names Janoshik Analytical and Vanguard Laboratory; certificates resolve on the lab's own domain (verify.janoshik.com). Product pages list dated batch codes for previous certificates, no account required. Legal entity, Tampa, FL address, EIN and sales-tax number published: Plainview Commerce LLC. Full basket with sized pricing, stable across reads.
Net content: Vanguard Laboratory PDF for lot PG-5101 (TB-500 5mg) reports 4.92mg measured vs 5mg, 99.30% purity — read 6 Sep 2026
Where it falls short
Small review base (65 on Trustpilot, 26 Sep 2026). Measured net content could not be read from the certificate images. The legal entity name appears on the refund policy but not the About page. GLP products sold under house codes PG-1SG / PG-2TZ / PG-3RT.
Before you order, check the batch
A ranking tells you which vendors have good practices; it cannot tell you about the specific vial you receive. When your order arrives, compare the batch number on the label to the certificate. If they do not match, or there is no batch number, the documentation does not cover what you were sent, regardless of who you bought from. How to read a peptide COA.
Buying SS-31 — frequently asked
Where can I buy SS-31?
As of 8 Nov 2026, 21 of the 106 vendors on our scoreboard list SS-31 with a price we have read on the product page: MyPurePeptide, Oneday Compounds, Peptide Giants, Premier Bio Labs, Snap Peptides, ezPeps, Pure Peptides, Pure Lab Peptides, Oath Research, PS Peptides, Blue Ridge Peptides, Everest Peptides, ZC Labs, Peptide Partners, GigaCompounds, Puratek Peptides, Peptira, Value Research Labs, Arizen BioLabs, Blue Sky Peptide, Peptide Pros. Every one of them is scored on the same 10-point rubric; the table above shows the score, the dated price and what you can verify before ordering.
Who sells the cheapest SS-31?
At the 10mg size, the lowest price we have on record is Oneday Compounds at $24.49 (read 8 Nov 2026) — sale · list $34.99 struck · RESEARCH WEEKEND SALE 30% OFF SITEWIDE banner on the homepage. It scores 10/10 on documentation. Price is the second sort key on this page, not the first, because an underdosed vial at a low price is the most expensive outcome.
Which SS-31 vendor has the best documentation?
MyPurePeptide, Oneday Compounds, Peptide Giants, Premier Bio Labs share the top score at 10/10: named laboratory, certificates that resolve on the laboratory's own site, measured milligrams against the label, and a published legal identity. The per-criterion evidence, with dates, is on each vendor's review page.
Is it legal to buy SS-31?
SS-31 is sold by these vendors as a research chemical for laboratory use, not for human consumption; none of it is FDA-approved in this form. Legality of purchase varies by jurisdiction and the compound, and it is your responsibility to know your local rules. Our pages assess documentation and pricing; they are not legal or medical advice.
How is this list ordered?
Rubric score first. Among equal scores, our editorial pick (Purgo Labs) comes first, then a short, named list of affiliate partners we choose to list first inside a tie, then the lower verified price per milligram at 10mg, then the larger independent review base. 12 of the 21 vendors here are partners. A partnership never changes a score and never moves a vendor above one with a higher score.
Where is SS-31 peptide for sale from a verified vendor?
The ranked table above lists every SS-31 seller we track, scored on the same checklist and ordered by the dated price on its product page. SS-31 is less commonly stocked and often sold in 10 mg and 50 mg sizes, so compare per-milligram prices and look for a batch-matched certificate.
Is SS-31 the same as elamipretide?
Yes. Elamipretide is the non-proprietary name; SS-31, MTP-131 and Bendavia were earlier development names. Research vendors mostly use SS-31, and a few use their own brand names for the same peptide.
Why is SS-31 so much more expensive at some vendors?
Part of the spread is vial size — some vendors sell much larger vials — and part is vendor pricing policy. Compare per milligram at the same size. A high price does not indicate better documentation, and the rubric score on this page is independent of price.