Counterfeit GLP-1 medications have been seized in the UK. The MHRA has confirmed seizures of falsified Mounjaro and Saxenda products, some containing incorrect or harmful substances including insulin. Buying from an unregistered provider is not just a waste of money — it carries genuine clinical risk.
The good news: checking whether a pharmacy is legitimate takes about 30 seconds. Here is exactly what to look for.
Step 1: Check the GPhC register
Every pharmacy legally operating in the UK must be registered with the General Pharmaceutical Council (GPhC). The register is public and searchable. Go to pharmacyregulation.org/registers/pharmacy and search by name or registration number.
Any legitimate UK online pharmacy will display its GPhC registration number prominently on its website — usually in the footer or on an 'about' or 'regulation' page. If you cannot find a GPhC number, do not proceed. All pharmacies listed on GLP1Compared.co.uk include their verified GPhC number with a direct link to the register entry.
Step 2: Confirm a clinical consultation is required
GLP-1 medications are prescription-only. No legitimate pharmacy can supply them without a prescription issued following a genuine clinical assessment. Be cautious of any service that:
- Asks only for your height and weight with no follow-up questions
- Does not involve any contact with a qualified prescriber
- Approves your order within seconds of submitting a questionnaire
- Does not ask about contraindications, existing medications, or medical history
The GPhC has been clear: an online questionnaire alone is insufficient for prescribing weight loss medications safely. A qualified prescriber must review the information provided and have the ability to ask follow-up questions.
Step 3: Check the MHRA register
The MHRA maintains a register of approved online medicine sellers. Any website selling prescription medicines in the UK must be on this register. You can also use the MHRA's online check tool to verify a site.
Red flags to watch for
- No GPhC number displayed — a fundamental legal requirement for any UK pharmacy
- Prices significantly below market rate — at the time of writing, genuine Mounjaro starts around £133/month; Wegovy around £89/month. Prices substantially lower than this warrant caution
- No UK address — legitimate pharmacies are based in the UK with verifiable addresses
- Payment only by cryptocurrency or bank transfer — a common trait of fraudulent sites
- Unsolicited social media offers — the MHRA has warned specifically about GLP-1 medications sold through Instagram and TikTok
- No option to speak to a pharmacist — regulated pharmacies must offer access to a pharmacist for queries
What happens if you buy from an unregistered provider
You have no consumer protection. You cannot verify the medication is genuine, stored correctly, or at the right concentration. The MHRA has confirmed seizures of counterfeit products containing insulin instead of semaglutide or tirzepatide — administering insulin without medical supervision can be life-threatening. There is also no route to clinical support if you experience side effects.