10 questions to ask before buying a GLP-1 medicine online

Buying GLP-1 online is now the normal way people in the UK start Mounjaro or Wegovy — and for the most part that is a good thing. Regulated online pharmacies are convenient, discreet and often cheaper than the high street. The catch is that the same demand has drawn out fake sellers, unregulated middlemen and social-media accounts happy to take your money for a box of something. The difference between a safe purchase and a dangerous one usually comes down to a handful of questions you ask before you pay. Here are the ten worth asking every time.

1. Is the seller on the GPhC register?

This is the first question and, honestly, the one that settles most cases on its own. Every pharmacy that legally supplies prescription-only medicines in Great Britain must appear on the General Pharmaceutical Council register — and that register is public, free and impossible for a seller to edit.

Search the pharmacy's registered name or postcode at pharmacyregulation.org/registers and confirm a current registration with a GB address that matches the website. If it isn't there, stop. We walk through this step by step in our guide to checking an online pharmacy is legitimate.

2. Do they require a prescription and a real consultation?

Mounjaro (tirzepatide) and Wegovy (semaglutide) are prescription-only medicines. There is no legal route to buying them online without a health consultation and a prescriber's decision. A legitimate pharmacy asks about your BMI, medical history and current medicines before it will supply anything.

So if a site sells GLP-1 with "no prescription needed", "instant checkout" or "skip the questions", that isn't a shortcut — it's a signal that the seller is operating outside the law and cannot be trusted with what's in the box.

3. Is a CQC-regulated clinic behind the online doctor?

Many online GLP-1 services pair a pharmacy with an online-doctor clinic that runs the consultation. That clinical side should be registered with the Care Quality Commission. You can check a service on the CQC register. It's a second, independent layer of assurance that a qualified prescriber — not an order form — is making the call.

4. Will they sell the genuine branded pen?

UK GLP-1 treatment means the branded Eli Lilly (Mounjaro) or Novo Nordisk (Wegovy) pen — not a vial, not a "compounded" or "generic" version, not something decanted into an unbranded syringe. Compounded semaglutide and tirzepatide are not licensed in the UK, and anyone offering them is a red flag on their own.

If a seller pushes vials, powders or "research-grade" GLP-1, walk away. Our warning on fake weight-loss injections covers exactly what the counterfeits look like and why they're so dangerous.

5. What is the ongoing price, not just the first month?

Here's where people overpay even at legitimate pharmacies. A jaw-dropping first-month promo can sit in front of a higher-than-average ongoing price, and because GLP-1 is a long game — you titrate up over months — the ongoing figure usually matters more.

At the 2.5 mg Mounjaro starter dose, base prices across the regulated pharmacies we track run from about £145.99 to £229. Move up to the 5 mg treatment dose and the same-dose spread is roughly £173.99 to £259. Over a year, that gap is hundreds of pounds for the identical pen.

A snapshot, not the full board — see the verified list for all 24 pharmacies and today's prices.

6. Is the low price a subscription in disguise?

Some of the lowest sticker prices come attached to a subscription, app fee, coaching add-on or minimum commitment. None of that is dodgy — but it changes the true cost. Before a low pen price wins you over, confirm three things:

• Is delivery included, or is cold-chain shipping charged each month?
• Is there a separate consultation or programme fee?
• Can you cancel any time, or are you locked into a plan?

A pharmacy with a slightly higher pen price, free delivery and no subscription can easily work out cheaper than a "budget" plan with extras bolted on.

7. Where did you find this seller?

The source matters as much as the price. If you arrived at a "pharmacy" through a paid social-media post, an influencer link or a DM offering GLP-1 at a fraction of the market rate, treat that as a warning, not a lead. Fake sellers live on Instagram, TikTok and Facebook Marketplace precisely because those platforms are easy to disappear from.

Our breakdown of weight-loss injection scams on social media shows the exact tactics — and why a real pharmacy never sells prescription medicine through a comment section.

8. Does the website look and behave like a real pharmacy?

Small details give scam sites away: no registered company name or address in the footer, no named superintendent pharmacist, broken English, a checkout hosted on a different domain, or a site that went live weeks ago. A genuine pharmacy is transparent about who it is and where it's registered. If you can't find that information, that absence is the answer.

9. What happens if I'm declined — do I get my money back?

Not everyone is suitable for GLP-1 treatment, and a responsible prescriber will say no when it isn't right. The question worth asking upfront is what happens to your payment if that's the outcome. Providers that refund you if you're declined take the financial gamble out of finding out whether you're eligible — which is exactly how it should work.

10. How will I report a problem — and to whom?

Before you buy, know your safety net. Suspected side effects, a suspected fake, or a pen that doesn't look right can all be reported to the MHRA through the Yellow Card scheme. A legitimate pharmacy will also have a named pharmacist and a clear complaints route. If there's no one to report to and no regulator behind the seller, you were never really protected in the first place.

For a shortlist of providers that clear all ten of these, see our guide to the safest places to buy weight-loss injections or start from the verified list on our homepage.

Frequently asked questions

Can I buy GLP-1 medicine online without a prescription?

No. Mounjaro and Wegovy are prescription-only medicines in the UK. A legitimate online pharmacy will always run a health consultation and have a prescriber decide whether treatment is right for you. Any site offering GLP-1 with "no prescription needed" is operating illegally and should not be trusted.

How do I check an online GLP-1 pharmacy is legitimate?

Search the pharmacy's registered name or postcode on the free GPhC register and confirm a current registration with a GB address that matches the website. For an online-doctor service, also check the clinic on the CQC register. If the seller is on neither, don't buy — our step-by-step guide shows exactly how.

Is a cheaper GLP-1 pen a weaker or different medicine?

No. Every regulated UK pharmacy dispenses the same branded Eli Lilly or Novo Nordisk pen. A lower price reflects the pharmacy's margins, delivery model and welcome offers — not a different or weaker product. The price varies; the medicine inside doesn't.

What is the biggest red flag when buying GLP-1 online?

A price far below the market with no consultation, no prescription and no ID check. Legitimate UK GLP-1 is prescription-only, so a real pharmacy always assesses you first. A seller that skips the prescriber — or asks you to pay by bank transfer or through social media — is a risk, not a bargain.

What should I do if I think I bought a fake GLP-1 pen?

Do not inject it. Keep the product and packaging and report it to the MHRA through the Yellow Card scheme. If you have already used it and feel unwell, contact your GP, NHS 111, or in an emergency call 999.

Prices in this guide were checked on 4 July 2026 and change often — always confirm the current price on the pharmacy's own website before you order. This is price and safety information, not medical advice.