Is Professor Peptide legit? An independent review
Professor Peptide is on the watch list: its certificate can't be verified in its own name, one of 496 of 536 UK sellers that fail this check.
- Certificate
- a supplier's Janoshik report, not its own · newest Mar 2026
- Official website
- professorpeptide.co.uk
- Buyer reports
- Coming soon, visible from 1 November 2026 · tell us about your order
Checked daily against the seller's site, the laboratory's site and the public record. If this seller publishes new evidence, tell us and it is re-checked. Method · data · correction
What we found
Professor Peptide checked 13 October 2026: professorpeptide.co.uk is a live UK-facing storefront (GBP, 'dispatched from our London facility', free tracked UK delivery over £75) selling retatrutide, tirzepatide, semaglutide, BPC-157, TB-500 and ipamorelin. The domain was registered on 28 June 2026. No company name, number or address appears on the site; contact is an email address and a UK mobile. The homepage says every batch is tested by an 'independently accredited third-party laboratory' and names no lab; /coa and /certificates return 404. The BPC-157 page says 'Batch BC10/202602 · Third-party analysis (Janoshik)' and its 'View batch CoA' button opens an image of Janoshik task #113685 (ordered 4 March 2026, analysed 11 March 2026, BPC-157 10mg, 11.09 mg, 99.837%) with the client and manufacturer fields blurred. Read on verify.janoshik.com on 13 October 2026, the same report names the client as GuangZhou Wanxi Trading Firm and the manufacturer as www.wanxipeptide.com. Nothing on Janoshik's site names Professor Peptide, and no verify.janoshik.com link appears on any of the ten pages read.
New Since 13 October 2026 you can tell us how your order went. Reports go up on this page from 1 November 2026, bad ones as well as good, because UK law doesn't let review sites hide negative reviews. A written note appears only after we have read it.
Tap one to start, about 30 seconds.
How buyer reports work
- Every report is confirmed by email before it counts, and each email address can report on a seller once every 90 days.
- We hold back anything that looks like a seller reviewing itself: an email from the seller's own domain, several reports from the same connection, or a sudden burst in a day. A person checks those before anything shows.
- Tick-box answers are shown only as totals. A written comment appears only after a person has read it. Bad reports go up as well as good ones: UK consumer law (the Digital Markets, Competition and Consumers Act 2024) doesn't let review sites hide negative reviews. We only trim or hold a comment for dosing or health effects, personal details, names of other shops, or accusations we can't check.
- Sellers can reply. If a seller disagrees with what buyers report, it can email [email protected] from its own domain, and we show one response next to the totals, with the date.
- No single thing on this page should decide it. Look at the lab reports, the buyer reports and how you'd pay, together.
Questions people ask about Professor Peptide
Is Professor Peptide legit?
Professor Peptide (professorpeptide.co.uk) is on The Peptide Watch's watch list. It does not publish a certificate of analysis that can be independently verified in its own name, so its quality claims rest on trust rather than checkable evidence. That is not proof of a scam; it means the evidence does not check out.
Does Professor Peptide publish a real, verifiable Certificate of Analysis?
Not one that can be independently verified in its own name. ❌ Shows a supplier's Janoshik report, not its own.
How do I check Professor Peptide's certificate myself?
Find the certificate on professorpeptide.co.uk and read four things: an independent laboratory is named; the client field names Professor Peptide, not a supplier; the compound line names the peptide you are buying, not only a batch code; and the report opens on the laboratory's own website from its task number and key (verify.janoshik.com for Janoshik). Then compare the batch number on the report with the one on your vial. The free COA Checker on this site runs the first three checks on a photo of the certificate.