Where to buy Semax in the UK: the sellers with a verifiable COA
The newest verifiable Semax certificate on any UK seller's website is on Lab77Peptides (lab77peptides.uk), analysed 28 Sep 2026 (task #231375 on Janoshik's site); 9 verified sellers hold one covering Semax, listed newest first below. Of the 446 active UK sellers we audit, 38 (9%) publish their own verifiable Janoshik certificate of analysis, and this page lists which of them hold one covering Semax, newest certificate first. It is a record of paperwork, not a recommendation: The Peptide Watch sells nothing, takes no money from sellers and links to none of them. Semax is a synthetic peptide developed from a fragment of ACTH, studied in neuroprotection and cognition research. Like Selank it is a Russian-origin research peptide whose short sequence makes independent identity testing worthwhile. Purity and identity cannot be judged by eye, so an independent certificate you can check is the only real proof of what is in the vial.
The one test that matters for Semax
Ignore the marketing. The question is simple: does the seller publish a verifiable Janoshik certificate that names the seller itself as the client? If it does, you can confirm an independent lab tested that batch. If it shows an in-house document, a borrowed certificate, or "COA on request", you cannot. Learn the two-minute check in how to verify a Janoshik COA.
Which UK sellers publish a verifiable COA
Of the 446 active UK research-peptide sellers we audit, only 38 (9%) publish their own verifiable Janoshik certificate. Any of them is where you can actually verify testing, for Semax or any compound. A few: Lab77Peptides · Peptology Labs · Biovanta · Camo Chem · Biohackpeptides · Zenic Labs. See the full independently-tested list, or check a specific shop's certificate with the free COA Checker.
Verified UK vendors with a confirmed Semax Janoshik certificate (9)
- Lab77Peptides lab77peptides.uk · newest Semax report 28 Sep 2026 · task #231375
- Pureline Biolabs purelinebiolabs.co.uk · newest Semax report 22 Jul 2026 · task #209941
- Kensingtonlabs kensingtonlabs.co.uk · newest Semax report 25 May 2026 · task #153897
- Biohackpeptides biohackpeptides.co.uk · newest Semax report 21 May 2026 · task #162930
- Thoroughbredlabs thoroughbredlabs.co.uk · newest Semax report 15 May 2026 · task #149079
- Peptifyuk peptifyuk.com · newest Semax report 11 May 2026 · task #149060
- Xlpeptides xlpeptides.com · newest Semax report 11 Feb 2026 · task #107391
- Imperialpeptides imperialpeptides.co.uk · newest Semax report 5 Feb 2026 · task #105937
- Clinicore clinicore.co.uk · newest Semax report 5 Feb 2026 · task #105709
Audit findings, not recommendations. Every entry is a report covering Semax that we opened on Janoshik's own site and that names the seller itself as the client; the date is the analysis date printed on the report where we have read it, otherwise the date the laboratory received the sample. The table below is the same ledger in full, so the two always agree. Not exhaustive: a vendor whose Semax report we have not yet read is not listed.
The 12 verifiable Semax certificates we have read, newest first
Each row was opened on Janoshik's own site by a real page load and transcribed. The client column is the name the laboratory printed; a certificate counts as a seller's own only when that name is the seller. The report date is the analysis date printed on the report where we have read it, otherwise the date the laboratory received the sample. The verify link opens the laboratory, never the shop. Audit findings, not recommendations.
| Seller | Task | Client on the report | Report date | Result | Batch | |
|---|---|---|---|---|---|---|
| Lab77Peptides | #231375 | Lab77peptides.uk | 28 Sep 2026 | Semax · 10.47 mg · 98.915% | L77semax2612 | verify |
| Pureline Biolabs | #209941 | Pureline Biolabs Ltd | 22 Jul 2026 | Semax · 5.28 mg · 98.938% | PLB-007 | verify |
| BioVanta Research | #153903 | Zenith Biolabs | 25 May 2026 | Semax · 5.03 mg · 99.204% | SMX-543HD | verify |
| Kensingtonlabs | #153897 | Kensington Labs | 25 May 2026 | Semax · 5.03 mg · 99.204% | SMX-543HD | verify |
| Biohackpeptides | #162930 | BiohackPeptides.co.uk | 21 May 2026 | Semax · 5.47 mg · 99.025% | BHP26EXA5 | verify |
| Thoroughbredlabs | #149079 | Thoroughbred Labs | [email protected] | 15 May 2026 | Semax · 10.50 mg · 98.134% | TBLSE100 | verify |
| Peptifyuk | #149060 | Peptify UK | 11 May 2026 | Semax · 10.63 mg · 98.350% | 2026/04 | verify |
| Xlpeptides | #107391 | XL Peptides | 11 Feb 2026 | Semax · 10.63 mg · 99.042% | 250SMX | verify |
| Clinicore | #105709 | clinicore | 5 Feb 2026 | Semax · 11.69 mg · 99.566% | sx10101 | verify |
| Imperialpeptides | #105937 | Imperial Peptides UK | www.imperialpeptides.co.uk | 5 Feb 2026 | Semax · 5.52 mg · 99.746% | MAX5-11/27 | verify |
| Imperialpeptides | #97282 | Imperial Peptides UK | www.imperialpeptides.co.uk | 6 Jan 2026 | As · not detected Cd · not detected Pb · not detected | MAX5-11/27 | verify |
| Imperialpeptides | #97291 | Imperial Peptides UK | www.imperialpeptides.co.uk | 6 Jan 2026 | Endotoxin · 1.187 EU/vial | MAX5-11/27 | verify |
What the 12 Semax certificates show
We have read 12 Janoshik reports covering Semax, published by 10 UK sellers. Each was opened on Janoshik's own website. 11 of the 12 name the seller itself as the client; the client column in the table above shows the name on the rest. 7 of the 12 are dated within the last six months. The newest is dated 28 Sep 2026 and the oldest 6 Jan 2026.
10 of the reports give a purity figure for Semax. The figures run from 98.134% to 99.746%, and 6 of the 10 are at 99% or above. 2 reports test for heavy metals or endotoxins instead. A purity figure describes the sample the laboratory received, not every vial from that batch.
Read directly from the newest reports: Lab77Peptides: task #231375, analysed 28 Sep 2026, 10.47 mg recovered at 98.915%, client Lab77peptides.uk; Pureline Biolabs: task #209941, sample received 22 Jul 2026, 5.28 mg recovered at 98.938%, client Pureline Biolabs Ltd; Kensingtonlabs: task #153897, analysed 25 May 2026, 5.03 mg recovered at 99.204%, client Kensington Labs.
A certificate is a batch document. The lines that matter are the compound (it must say Semax, not only a batch code), the client (the shop, not its supplier) and the analysis date. A new batch is untested until a new report appears.
Questions people ask
Which UK sellers publish a verifiable Janoshik certificate naming Semax?
As of 30 September 2026, 9: Lab77Peptides, Pureline Biolabs, Kensingtonlabs, Biohackpeptides, Thoroughbredlabs, Peptifyuk, Xlpeptides, Imperialpeptides, Clinicore. Each has a report on Janoshik's own website that names the seller as the client and lists Semax. That is a statement about paperwork, not a recommendation; The Peptide Watch does not recommend anywhere to buy Semax.
How recent is the newest Semax certificate from a UK seller?
The newest we have read is Janoshik task #231375, analysed 28 Sep 2026. It is published by Lab77Peptides and names it as the client. A certificate covers one batch, so an old one says little about stock on sale today.
How do I check that a certificate for Semax is genuine?
Four things: an independent laboratory is named; the client field names the seller you are buying from, not a supplier; the compound line says Semax; and the report's task number and key open the same report on the laboratory's own website (verify.janoshik.com). A branded PDF with no laboratory name and no verification code fails on the first check, however professional it looks. The free COA Checker on this site runs the checks for you.
Is Semax a licensed medicine in the UK?
Not a licensed medicine in the UK. Sold as a research chemical. Registered as a medicine in Russia since 1994; no approval or development programme in the UK, EU or US. The Peptide Watch does not give legal or medical advice.
Why does The Peptide Watch not say where to buy Semax?
Because the site records paperwork, not recommendations. A verifiable certificate proves that a sample of one batch was tested. It does not prove the vial you receive matches it, and it says nothing about whether anyone should use Semax. Listing which sellers publish a certificate you can check, and which publish nothing, is as far as the evidence goes.
Semax in the UK at a glance
| Active UK sellers listing Semax | 22 |
|---|---|
| Of which publish a verifiable own-name certificate | 9 |
| Of which name no laboratory at all | 6 |
| Paying for Google Ads on it | 3 |
| Sellers of it that have closed or vanished | 0 |
Counted from the vendor ledger at build time: a seller is included when its audit records Semax in its certificates or its catalogue notes. Audit findings, not recommendations.
The other 13 sellers: what they publish instead
- No named lab, nothing to verify: 6
- Real lab, but not Janoshik: 2
- No lab named: 2
- Hides behind an 'accredited UK lab': 1
- Self-tested, not independent: 1
- Own-name Janoshik document, portal unread: 1
Each pattern is explained on the seller's own audit page, with what we saw and the date. The A-Z directory lists every seller.
The market for Semax in the UK
Advertising. Google's Ads Transparency Centre shows 3 of these sellers running ads: Peptifyuk, Kensingtonlabs, Thoroughbredlabs. Paid reach is where a new buyer meets a brand before meeting any certificate.
Companies. 10 of the 22 can be matched to a Companies House record; the median company is 13 months old and 5 were incorporated within the last year. A seller with no traceable company is not necessarily dishonest, but there is nobody to hold to its certificate.
Reviews. 3 of the 22 have a Trustpilot profile with a score; the median is 4.3, 1 sit at 4.5 or above and 0 below 3.0. A review score says who collects reviews, not who tests, which is why it sits next to a certificate and never instead of one.
Changes among Semax sellers
- 2026-09-29 AurumLabs (aurum-labs.co) added to the audit on the watch list.
- 2026-09-29 Peptide Origin (peptideorigin.com) added to the audit on the watch list.
- 2026-09-29 Peptides.net (peptides.net) added to the audit on the watch list.
- 2026-09-28 Clinicore (clinicore.co.uk) added to the audit on the verified list.
- 2026-09-27 MrPep (mrpep.co.uk) added to the audit on the watch list.
- 2026-09-27 Lab77Peptides (lab77peptides.uk) published a newer own-name certificate (now Sep 2026).
From the site changelog, which also runs as a JSON feed.
What the research shows for Semax, and what it does not
| Papers on PubMed | 207 |
|---|---|
| Indexed as rat or mouse studies | 148 |
| Indexed as clinical trials | 4 |
| Published since 2020 | 38 |
| Trials registered on ClinicalTrials.gov | 0 |
A Russian nasal peptide medicine since 1994. Semax, an analogue of a fragment of ACTH, was developed at the Institute of Molecular Genetics in Moscow and is registered in Russia for stroke and cognitive disorders. PubMed indexes 207 papers, but 148 are rat or mouse studies and only 4 are indexed as clinical trials.
No registered trials anywhere else. ClinicalTrials.gov lists none, and no Western regulator has assessed it.
For a UK buyer, the vial is not the Russian product, and only a verifiable certificate says what it contains.
Who owns Semax, and where it stands
| Originator | Institute of Molecular Genetics, Russian Academy of Sciences. |
|---|---|
| Rights | Russian state research institute; registered medicine in Russia. |
| Development status | Licensed elsewhere, not in the UK, US or EU. Registered as a medicine in Russia since 1994; no approval or development programme in the UK, EU or US. |
| Clinical trials | 0 registered on ClinicalTrials.gov |
| In the UK | Not a licensed medicine in the UK. Sold as a research chemical. |
Counts are from PubMed on 15 September 2026 using the queries recorded in our evidence file; "clinical trial" is PubMed's own publication-type index. This is a description of the published record, not medical advice and not an argument for or against use.
Sources (7)
- [The efficacy of semax in the tretament of patients at different stages of ischemic stroke]. (Zh Nevrol Psikhiatr Im S S Korsakova, 2018, PMID 29798983)
- [The study of chronic partial denervation and quality of life in patients with motor neuron disease treated with semax]. (Zh Nevrol Psikhiatr Im S S Korsakova, 2007, PMID 18379501)
- [Evaluation of therapeutic effect of new Russian drug semax in optic nerve disease]. (Vestn Oftalmol, 2000, PMID 10741256)
- [Effectiveness of semax in acute period of hemispheric ischemic stroke (a clinical and electrophysiological study)]. (Zh Nevrol Psikhiatr Im S S Korsakova, 1997, PMID 11517472)
- Therapeutic Peptides in Orthopaedics: Applications, Challenges, and Future Directions. (J Am Acad Orthop Surg Glob Res Rev, 2026, PMID 41490200)
- Modulation of neuropathological pathways by bioactive peptides and proteins/polypeptides: Targeting oxidative stress in neurodegenerative diseases. (Neuropeptides, 2025, PMID 41004910)
- Therapeutic peptides in gerontology: mechanisms and applications for healthy aging. (Front Aging, 2026, PMID 42021992)
The Peptide Watch's position on Semax
Not a licensed medicine in the UK. Sold as a research chemical. The Peptide Watch reads the certificates UK sellers publish and does not recommend anywhere to buy Semax. Sellers on this page are listed by the date of their newest Semax certificate and by nothing else. If you can verify a seller's testing, you can at least judge its evidence; if you cannot, you are taking the seller's word for what is in the vial. See how UK testing compares across every seller in the market statistics.
An honest note: a verifiable certificate proves a sample of a batch was tested, not that the specific vial you receive matches it, see what this can and can't tell you. The Peptide Watch sells no Semax and links to no shop; this is research-use-only information, not medical or dosing advice.
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