◇ The Peptide Watch, independent vendor audit

Is Nupex legit? An independent review

nupex.co.uk · audited 13 October 2026

On the watch list

Nupex is on the watch list: its certificate can't be verified in its own name, one of 483 of 524 UK sellers that fail this check.

Certificate: none found in its own name
Official website: nupex.co.uk
Same operator: researchscientific.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

Nupex trades as Research Scientific Ltd (Companies House 16181281, Christchurch) and states its peptides are 'third-party tested' / 'lab tested' to ≥99% but never names the lab and publishes no verifiable certificate, offering a COA only 'where available' on request. A purity claim with no named lab, no published document and no verification link is just a number on a product page, the buyer is asked to take quality entirely on trust.

This is one of 2 storefronts run by the same operator. The same people also run: researchscientific.co.uk. (both are Research Scientific Ltd (Companies House 16181281).)
"Shopping around" between these names is buying from one seller, same stock, same risk, different branding.

Bought from Nupex? Tell us about your order.

New As of 13 October 2026 you can leave feedback on your order. Reports are being collected now and will be shown on this page from 1 November 2026, so every seller has the same time to gather them. Written notes appear only after we have read them.

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Google Ads

Advertising research peptides on Google, a category Google's own policies prohibit. Live ads for this domain are visible in Google's Ads Transparency Centre (UK), see for yourself. Getting banned products through Google's review typically means short-lived or multiple advertiser accounts.

Nupex reviews: what others report

Third-party signals we found, reviews, independent tests and platform actions, each attributed to its source and labelled by how well it is corroborated. This is not our own verification; items marked "single / unverified report" are unconfirmed and should be treated with caution.

reported

This article reports customer complaints that Retatrutide from Nupex produced no effect (described as behaving like sterile water even at raised doses), a damaged vial with a visible blue fleck in the powder, and that a batch COA was self-signed by a company representative with no independent lab named. IMPORTANT BIAS FLAG: the publisher uk-peptides.com is itself a direct competing UK peptide vendor and frames the piece partly around customers confusing the two brands, so treat its strongest claims ('totally fake', 'swindlers') as potentially self-interested rather than neutral.

“The Certificate of Analysis was self-signed by a company representative, with no independent lab named and no raw analytical data provided”

Source: uk-peptides.com blog 'Nupex Peptides Review - A Cautionary Note'

independently confirmed

Nupex is a trading name of RESEARCH SCIENTIFIC LTD, company number 16181281, registered at 107-111 Ringwood Road, Christchurch BH23 5RA. The company began trading in 2024, so it is a relatively new entrant.

“trading name of RESEARCH SCIENTIFIC LTD”

Source: Nupex About Us / Companies House

single / unverified report

A secondary summary claimed Nupex's Trustpilot page had been removed as a 'bad fit for Trustpilot', but this could not be independently confirmed against the live page and conflicts with snapshots showing an active page; treat as unverified.

Source: Web summaries citing Trustpilot moderation

Questions people ask about Nupex

Is Nupex legit?

Nupex (nupex.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 Nupex publish a real, verifiable Certificate of Analysis?

Not one that can be independently verified in its own name. Nupex (Research Scientific Ltd, Companies House 16181281) claims 'third-party / lab tested' but never names the lab and publishes no verifiable certificate, an unnamed, unpublished test is just a marketing claim.

How do I check Nupex's certificate myself?

Find the certificate on nupex.co.uk and read four things: an independent laboratory is named; the client field names Nupex, 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.