Where to buy Selank (also sold as N-Acetyl Selank, NA-Selank amidate): the 9 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.
Reference size 10mg — the size most of these vendors sell. Other sizes we have on record are listed per vendor.
| # | Vendor | Rubric | 10mg price | Other sizes | Trustpilot | Buy |
|---|---|---|---|---|---|---|
| 1 | Purgo LabsPartner SteriGenix · Freedom Diagnostics | 10/10 | $34.99 ($3.50/mg · 2 Oct 2026 · was $27.99 · list price; OCTOBER code banner (15% off) shown, not applied) | — | 4.7 (101 reviews) | HEALTH 20% off every order |
| 2 | Peptide GiantsPartner Janoshik Analytical · Vanguard Laboratory | 10/10 | $49.99 ($5.00/mg · 23 Sept 2026 · list price) | 5mg $29.99 | 4.6 (65 reviews) | health 10% off |
| 3 | Rivn PeptidesPartner Freedom Diagnostics | 9/10 | $49.99 ($5.00/mg · 23 Sept 2026 · list price; Selank; sold as 'Research Grade Selank Peptide') | — | 4.9 (634 reviews) | compoundreview15 15% off |
| 4 | TrustedPepsPartner Freedom Diagnostics (on certificates) | 9/10 | $20.00 ($2.00/mg · 23 Sept 2026 · sale; list $30.00 struck; sold as 'Selank 10MG') | — | 4.8 (104 reviews) | HEALTH 10% off every order |
| 5 | PS PeptidesPartner North American Diagnostics | 8/10 | not sold at 10mg | 5mg $32.99 | 4.3 (204 reviews) | HEALTH 10% off |
| 6 | Everest Peptides Freedom Diagnostics | 8/10 | $29.99 ($3.00/mg · 23 Sept 2026 · sale; list $39.99 struck) | — | 4.8 (58 reviews) | Visit |
| 7 | Puratek PeptidesPartner ILS Laboratories (on certificates) · page credits Freedom Diagnostics | 7/10 | $32.95 ($3.30/mg · 23 Sept 2026 · list price; sold as 'Selank 10 mg') | — | profile removed | Visit |
| 8 | Arizen BioLabsPartner Janoshik (on certificates) | 6/10 | $27.99 ($2.80/mg · 23 Sept 2026 · sale; list $39.99 struck) | — | 4.8 (44 reviews) | HEALTH 10% off |
| 9 | Licensed PeptidesPartner Vanguard Laboratory (printed 'Vangaurd' on COA panels) | 5/10 | $61.99 ($6.20/mg · 23 Sept 2026 · list price; sold as 'Selank 10mg') | — | profile removed | Affiliate5 5% off |
Selank is a synthetic analogue of the tuftsin fragment, developed alongside Semax and sold by most of the same vendors, usually on an adjacent listing. The same three-way split applies: a lyophilised vial, a nasal solution priced by volume, and modified variants (N-acetyl Selank, N-acetyl Selank amidate) that are distinct molecules.
This page ranks lyophilised vials of Selank itself. Solution listings are excluded. Read the product name carefully, because the variants carry different molecular weights and are not the same product at a different price.
It is a short peptide, inexpensive to synthesise, and sold across a wide range of vial sizes; the per-milligram figure is the number to compare, and the rubric score is what separates vendors whose per-milligram prices are close.
What we can verify
Publishes per-lot COAs naming the testing laboratory — SteriGenix and Freedom Diagnostics — with lot numbers, test dates, measured net peptide content and direct verify-at-lab links. HPLC and mass spectrometry testing, US-based fulfilment from Scottsdale, Arizona, same-day dispatch on weekday orders before 2PM EST, and a 60-day money-back guarantee.
Net content: Measured net peptide published per lot (e.g. BPC-157 lot PL-BPC-05: 11.16mg vs 10mg label)
Where it falls short
Smaller independent review base than several competitors (80 reviews). The catalog is peptide-focused, so researchers also working with SARMs or broader research chemicals will need a second supplier.
What 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.
What we can verify
Names Freedom Diagnostics (Nashville) as its per-batch testing lab — the same laboratory Purgo Labs uses. 43-product catalog with public sized pricing. 4.9 across 561 Trustpilot reviews on a claimed, active profile (read 19 Sep 2026). Free same-day shipping (order by 12pm CT), 30-day money-back, published street address in Gallatin, TN.
Net content: Certificate reports 1.19mg measured vs 1mg label, 99.76% purity
Where it falls short
Scored 10/10 on 19 Sep 2026, up from 8/10, and the timing is disclosed rather than buried: Rivn became an affiliate partner the same day, and that is what prompted the re-read. The two points it had been missing came from a single on-site '4.9 (1,247 reviews)' widget that contradicted the real Trustpilot record; that widget is gone, no in-house review count replaced it, and a searchable 47-certificate library now sits where seven loose images were in August. Full evidence and the exact pages checked are in the score history. Still vendor-stated and unverified: 'ISO 9001 certified facilities', 'Certified GMP', and the lab's ISO/IEC 17025 accreditation — claims we note but do not score.
Purgo Labs sits at #1 of 9 on this page: 10/10 on the rubric, 10mg at $34.99 read 2 Oct 2026. Code HEALTH gives 20% off every order. We earn a commission; it did not decide the order above.
Visit Purgo Labs — code HEALTHBefore 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.
As of 2 Oct 2026, 9 of the 78 vendors on our scoreboard list Selank with a price we have read on the product page: Purgo Labs, Peptide Giants, Rivn Peptides, TrustedPeps, PS Peptides, Everest Peptides, Puratek Peptides, Arizen BioLabs, Licensed Peptides. 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.
At the 10mg size, the lowest price we have on record is TrustedPeps at $20.00 (read 23 Sept 2026) — sale; list $30.00 struck; sold as 'Selank 10MG'. It scores 9/10 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.
Purgo Labs and Peptide Giants 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.
Selank 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.
Rubric score first. Among equal scores, the lower verified price per milligram at 10mg. Then the larger independent review base. Affiliate partnership is not an input: 8 of the 9 vendors here are partners and they sit wherever the evidence puts them.
No. The acetylated and amidated variants are modified versions with different molecular weights. Some vendors list them as if interchangeable. The certificate's mass-spectrometry identity and stated molecular weight confirm which one is in the vial.
Not meaningfully. A spray is sold by volume with a stated concentration; a vial states peptide mass directly. This page compares vials. Vendors that sell only a solution do not appear.