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); 10 verified sellers hold one covering Semax, listed newest first below.
A record of paperwork, not a recommendation: The Peptide Watch sells nothing, takes no money from sellers and links to none of them.
Who has the newest report · Why the date matters · What purity means · What Semax is · Regulators · Every report
Who holds the newest Semax report (10 verified UK sellers)
Newest report first. Every report was opened on Janoshik's own website and names the seller as the client. The date is the analysis date printed on the report. The verify link opens the laboratory, never the shop. Audit findings, not recommendations.
| Seller | Newest Semax report | Age of that report | Purity on it | |
|---|---|---|---|---|
| Lab77Peptides | 28 Sep 2026 | 12 days | 98.915% | verify |
| Peptide Central UK | 13 Aug 2026 | 1 month, 27 days | 99.533% | verify |
| Pureline Biolabs | 22 Jul 2026 | 2 months, 18 days | 98.938% | verify |
| Kensingtonlabs | 25 May 2026 | 4 months, 15 days | 99.204% | verify |
| Biohackpeptides | 21 May 2026 | 4 months, 19 days | 99.025% | verify |
| Thoroughbredlabs | 15 May 2026 | 4 months, 25 days | 98.134% | verify |
| Peptifyuk | 11 May 2026 | 4 months, 29 days | 98.350% | verify |
| Xlpeptides | 11 Feb 2026 | 7 months, 29 days | 99.042% | verify |
| Imperialpeptides | 5 Feb 2026 | 8 months, 5 days | 99.746% | verify |
| Clinicore | 5 Feb 2026 | 8 months, 5 days | 99.566% | verify |
Every Semax purity report we have read (11), one row per report
The 11 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 |
| Peptide Central UK | #217539 | Peptide Central UK | 13 Aug 2026 | Semax · 10.29 mg · 99.533% | 100239 | 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 |
Why the date on a certificate matters
What a purity figure means
The purity on a Janoshik report is the share of the main peak in an HPLC chromatogram. 99.5% means that 99.5% of what the detector saw was one substance and 0.5% was something else. It is not the amount in the vial: that is the separate quantity line, in milligrams. It does not by itself prove which substance the peak is: that is identity, confirmed by mass spectrometry. And it says nothing about sterility, endotoxins or heavy metals, which are separate tests.
A purity figure printed on a shop page with no report behind it is a claim, not a measurement. Between two reports, the difference that matters is rarely 99.2% against 99.8%; it is whether the report exists at all, names the seller as the client, covers this compound on its own, and is recent.
What Semax is, and what it is sold as
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.
| 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. |
|---|---|
| Originator | Institute of Molecular Genetics, Russian Academy of Sciences. Rights: Russian state research institute; registered medicine in Russia. |
| Registered clinical trials | 0 on ClinicalTrials.gov |
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.
The published record in numbers, and the sources
| Papers on PubMed | 207 |
|---|---|
| Indexed as rat or mouse studies | 148 |
| Indexed as clinical trials | 4 |
| Published since 2020 | 38 |
Counts are from PubMed on 15 September 2026 using the queries recorded in our evidence file. A description of the published record, not medical advice and not an argument for or against use.
- [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)
What regulators say about Semax
In the UK. Not a licensed medicine in the UK. Sold as a research chemical.
We hold no statement from the FDA, MHRA or EMA specifically about Semax on file. Its development and licence sources are listed under the record above.
What the 11 Semax certificates show
We have read 11 Janoshik reports covering Semax, published by 11 UK sellers. Each was opened on Janoshik's own website. 10 of the 11 name the seller itself as the client; the rest name a supplier or a different shop. 8 of the 11 are dated within the last six months. The newest is dated 28 Sep 2026 and the oldest 5 Feb 2026.
All 11 reports give a purity figure for Semax. The figures run from 98.134% to 99.746%, and 7 of the 11 are at 99% or above. 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; Peptide Central UK: task #217539, analysed 13 Aug 2026, 10.29 mg recovered at 99.533%, client Peptide Central UK; Pureline Biolabs: task #209941, sample received 22 Jul 2026, 5.28 mg recovered at 98.938%, client Pureline Biolabs Ltd.
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.
Semax in the UK at a glance
| Active UK sellers listing Semax | 27 |
|---|---|
| Of which publish a verifiable own-name certificate | 10 |
| Of which name no laboratory at all | 6 |
Counted from the vendor ledger at build time. The A-Z directory lists every seller and what each publishes instead.
Questions people ask
Which UK sellers publish a verifiable Janoshik certificate naming Semax?
As of 10 October 2026, 10: Lab77Peptides, Peptide Central UK, 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.
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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