Question 1

What are GLP-1 medicines?

Accepted Answer

GLP-1 receptor agonists are a class of medicines that mimic the action of glucagon-like peptide-1. Examples include semaglutide (Ozempic, Wegovy), liraglutide (Saxenda, Victoza), and dual-agonist tirzepatide (Mounjaro). They are licensed for type 2 diabetes and/or weight management depending on the product.

Question 2

What is the difference between Ozempic and Wegovy?

Accepted Answer

Both contain semaglutide. Ozempic (lower-dose, weekly) is licensed for type 2 diabetes; Wegovy (higher-dose, weekly) is licensed for chronic weight management. The medicine is the same molecule; the dose and licensed indication differ.

Question 3

What is the difference between semaglutide and tirzepatide?

Accepted Answer

Semaglutide acts on the GLP-1 receptor. Tirzepatide acts on both GLP-1 and GIP receptors (a 'dual agonist'). Head-to-head data suggest tirzepatide produces more weight loss on average, though individual factors matter. See /comparisons/semaglutide-vs-tirzepatide.

Question 4

Can I get a GLP-1 medicine on the NHS?

Accepted Answer

NHS access depends on the specific medicine, the indication, NICE guidance, and local commissioning. For weight management the eligibility criteria are specific. For type 2 diabetes the pathways are different. Ask your GP about your situation.

Question 5

Is private prescribing of Ozempic / Wegovy / Mounjaro legal in the UK?

Accepted Answer

Yes, if carried out by a registered UK prescriber after appropriate clinical assessment, with dispensing by a UK-regulated pharmacy. Quality of online private services varies — a 30-second tick-box questionnaire is not the same as a clinical consultation.

Question 6

Can I buy Ozempic / Wegovy / Mounjaro without a prescription?

Accepted Answer

Not lawfully through a UK route. These are UK prescription-only medicines. Any seller offering them without a prescription is operating outside UK law and the product may be counterfeit.

Question 7

What is 'research only' semaglutide?

Accepted Answer

Some grey-market sellers list semaglutide powder for 'research use only'. The product is rarely verifiable as genuine pharma-grade semaglutide. The labelling does not change UK regulatory framing or the consumer-safety problems.

Question 8

What about 'compounded semaglutide' or 'compounded tirzepatide'?

Accepted Answer

UK compounding rules are narrow. Most products marketed as 'compounded GLP-1' are unregulated grey-market product, not legitimate compounded medicines.

Question 9

How do I spot a counterfeit GLP-1 pen?

Accepted Answer

Bought without a prescription; bought via social media or messaging apps; cut-price compared to standard UK private pricing; packaging in the wrong language or missing UK MAH details; pen mechanism that feels different. See /safety-centre/fake-weight-loss-pens.

Question 10

What if I've been using a counterfeit pen?

Accepted Answer

Stop using it. Call NHS 111 (or 999 in emergency) for medical advice. Keep the product and packaging — the MHRA may need them. Report via Yellow Card and the MHRA's counterfeit route, and to Action Fraud if you have been scammed.

Question 11

Are GLP-1 medicines safe long-term?

Accepted Answer

Licensed GLP-1 medicines have substantial safety data and ongoing pharmacovigilance. They are not appropriate for everyone — contraindications and monitoring matter. Discuss with a UK-registered prescriber.

Question 12

Do GLP-1 medicines cause weight regain after stopping?

Accepted Answer

Obesity is a chronic condition. Trial data generally show partial weight regain after discontinuation. The plan for stopping should be discussed with your prescriber before starting.

Question 13

Is tirzepatide approved in the UK?

Accepted Answer

Yes — tirzepatide is licensed in the UK as Mounjaro. The licensed indications and access routes are set out in the MHRA marketing authorisation and NICE guidance.

Question 14

Is retatrutide approved in the UK?

Accepted Answer

Not at the time of writing. Retatrutide is investigational. Sellers offering 'retatrutide' for personal use are operating outside the regulated supply chain.

Question 15

Are GLP-1 medicines prohibited in sport?

Accepted Answer

Athletes must check current WADA / UKAD status. GLP-1 status can change and may require a Therapeutic Use Exemption in some contexts.

GLP-1 medicines (Ozempic, Wegovy, Mounjaro) — UK FAQ

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GLP-1 medicines (Ozempic, Wegovy, Mounjaro) — UK FAQ

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