To check a UK online pharmacy is legitimate, confirm it is registered with the General Pharmaceutical Council (GPhC) by looking up its registration number on the GPhC register at pharmacyregulation.org, check it names a Superintendent Pharmacist and uses UK-registered prescribers, supplies only MHRA-licensed medicines, and is registered with the Information Commissioner's Office (ICO) for data protection. If any of these cannot be verified, treat the site with caution.
Below is a practical, step-by-step way to run those checks yourself, plus the warning signs that a site is cutting corners.
How do I verify a UK online pharmacy is registered?
A legitimate UK online pharmacy that dispenses prescription medicines must be registered with the General Pharmaceutical Council (GPhC), the statutory regulator for pharmacies in Great Britain. The pharmacy should display its GPhC registration number clearly, and you can confirm it independently by searching that number or the pharmacy name on the GPhC register at pharmacyregulation.org.
When you look it up, the register should show the pharmacy's name, premises address and current registration status. If the details on the register do not match the website, or the pharmacy cannot be found at all, that is a strong reason not to proceed.
As a worked example, medicines ordered through The Weight Clinic are dispensed by our own GPhC-registered pharmacy, North Harrow Pharmacy, GPhC registration number 1034996 — a number you can type straight into the GPhC register to confirm it.
What is the GPhC internet pharmacy logo and how do I use it?
Registered UK online pharmacies can display the GPhC's voluntary internet pharmacy logo, a green cross symbol that, when clicked, links to the pharmacy's entry on the GPhC register. A genuine logo takes you to the regulator's own website; a fake one is just an image that links nowhere or to a page the site controls.
Do not rely on the logo alone. Always click it to confirm it opens the GPhC register, and cross-check the registration number shown there against the one on the website. The logo is a shortcut to verification, not proof on its own.
Who should prescribe and dispense my medicine?
In a legitimate UK service, a prescription-only medicine is prescribed by a GPhC-registered independent prescriber after a clinical consultation, and dispensed by a registered pharmacy — not sold from a web form with no clinical check. The site should name its Superintendent Pharmacist, who holds overall responsibility for the pharmacy's clinical governance.
At The Weight Clinic, for example, the Superintendent Pharmacist is Andrew Lane (GPhC 2027876), every treatment is prescribed by a GPhC-registered independent prescriber, and medicines are dispensed by our own UK pharmacy rather than a third-party warehouse. You can read more about the people and process on our about page and treatments overview.
Should a legitimate pharmacy ask about my health first?
Yes. A legitimate UK online pharmacy must assess whether a prescription-only medicine is clinically appropriate before supplying it, which means asking about your health, medical history and sometimes requesting a video consultation. A site that lets you buy a prescription medicine with no questions, or that ignores your answers, is not operating safely or lawfully.
You should never be guaranteed a prescription in advance. Treatment should only be offered if a registered prescriber decides it is suitable and safe for you. Our own process starts with a free online consultation — you can see how it works via our eligibility check.
How do I know the medicine itself is genuine?
Genuine UK online pharmacies supply only medicines that hold a Medicines and Healthcare products Regulatory Agency (MHRA) licence for use in the UK, and dispense them in proper manufacturer packaging. Be wary of "unlicensed", "generic versions" of branded injectables, or products shipped from overseas, as these may be falsified or stored incorrectly.
Licensed weight-management medicines such as Mounjaro (tirzepatide), the Wegovy injection, the Wegovy Tablet and Foundayo (orforglipron) are prescription-only and should only reach you through a regulated pharmacy after a consultation. If a price looks far below everyone else's, ask why — it can signal a grey-market product.
What about my personal and medical data?
A legitimate UK online pharmacy must handle your personal and medical information lawfully, which means it should be registered with the Information Commissioner's Office (ICO) and have a clear, readable privacy policy. Many reputable clinics also comply with the NHS Data Security and Protection Toolkit (DSPT), a recognised NHS data-security standard.
Before you share health details, check the site has a privacy policy you can actually read and understand. You can review The Weight Clinic's privacy policy and terms at any time, and contact us through our contact page with any questions.
A quick checklist before you buy
| Legitimate pharmacy | Warning sign |
|---|---|
| GPhC registration number you can verify on pharmacyregulation.org | No registration number, or details that do not match the register |
| Named Superintendent Pharmacist and UK-registered prescribers | No named clinicians or regulator mentioned anywhere |
| Clinical consultation required before supply | Prescription medicine sold with no health questions |
| Only MHRA-licensed medicines in proper packaging | "Unlicensed", overseas or suspiciously cheap products |
| Registered with the ICO; clear privacy policy | No privacy policy; vague about data handling |
| UK contact details and transparent pricing | Only an email form; pressure to buy quickly |
What about online reviews — can I trust them?
Online reviews can be useful context but should never replace checking the GPhC register, because reviews can be selective, incentivised or fabricated. Treat star ratings as one small signal and give far more weight to verifiable facts: the registration number, the named prescriber and whether a consultation is required.
If you are comparing weight-loss services specifically, you can browse factual information on our injections page and the blog, then confirm regulation yourself rather than relying on any claim a site makes about itself.
Where do side effects get reported in the UK?
In the UK, suspected side effects from any medicine can be reported through the MHRA Yellow Card scheme at https://yellowcard.mhra.gov.uk/. A legitimate pharmacy will provide ongoing prescriber support and clear information on what to do if you experience side effects, rather than disappearing after taking payment.
If you are considering a prescription weight-management medicine, the safest route is always a consultation with a GPhC-registered prescriber who can assess whether it is appropriate for you. You can start a free online consultation at our eligibility check.
This article is for information only and is not a substitute for personalised medical advice. Weight-loss medicines are prescription-only, are not suitable for everyone, and are prescribed only after a clinical consultation with a GPhC-registered prescriber. Individual results vary. Always speak to a UK-registered pharmacist or doctor before starting or changing any prescription medication.
