GLP-1 Brands in the UK: Mounjaro, Wegovy, Ozempic and More (October 2026)

01 · The short answer

Which brands are GLP-1 medicines in the UK?

The GLP-1 brands you are most likely to meet in the UK are Mounjaro, Wegovy, Ozempic and Saxenda, plus newer oral options. The ingredient, not the brand, determines how the medicine works.

For a longer list organised by manufacturer and ingredient, see our guide to brands of GLP-1 drugs.

02 · Your next step

Which brand is relevant to you?

The right brand is a prescriber's decision, based on your health history, your goals and what you tolerate. You cannot simply pick from a list, because every product here is prescription-only.

If you are weighing up weight management, the practical question is usually tirzepatide versus semaglutide. Both are licensed, regulated and effective alongside a reduced-calorie diet and more physical activity, and neither replaces them. Our weight loss clinic explains how a consultation works, and the Mounjaro pen page shows current prices and availability. The standard 2.5mg starting pen costs £169.99 per month, and a new customer's first 2.5mg pen is £129.99 with code FIRST40.

Related guides: Glp 1 brands for weight loss and Agonisti glp 1.

03 · Brand versus ingredient

Brand name versus active ingredient

A brand name belongs to a manufacturer; the active ingredient is the substance doing the work. Mounjaro is the brand name for tirzepatide, a once-weekly injectable prescription medicine made by Eli Lilly.¹ Wegovy and Ozempic are two brands of semaglutide.

This matters because the same ingredient can appear under different brands with different licences and dose ladders. Wegovy and Ozempic share an ingredient, yet they are not interchangeable products, and each has its own dosing instructions. Never swap one for another without a prescriber's guidance.

04 · Mounjaro (tirzepatide)

Mounjaro: the dual-action brand

Mounjaro is a once-weekly pen that activates both GIP and GLP-1 receptors, which is what sets it apart from single-action GLP-1 medicines such as semaglutide.¹ Together these actions help regulate appetite, slow how quickly the stomach empties and improve the way the body responds to insulin. Most people feel fuller sooner and less hungry between meals, which supports a reduced-calorie diet.

So strictly speaking, tirzepatide is a GIP and GLP-1 medicine rather than a pure GLP-1 one, though it is routinely grouped under the GLP-1 heading because it acts on that receptor.

It comes as a multi-dose KwikPen in six strengths: 2.5mg, 5mg, 7.5mg, 10mg, 12.5mg and 15mg. Everyone starts on 2.5mg once a week, which is about letting your body adjust rather than weight loss itself. After at least four weeks the dose rises to 5mg, then can step up in 2.5mg increments at minimum four-week intervals, to a maximum of 15mg weekly. Many people settle at 5mg, 10mg or 15mg; higher is not automatically better.

In the SURMOUNT-1 trial, people taking tirzepatide alongside diet and exercise lost on average 15% of body weight on 5mg, 19.5% on 10mg and 20.9% on 15mg over 72 weeks, compared with 3.1% with lifestyle changes alone. These are trial averages, individual results vary, and the medicine works alongside a reduced-calorie diet and increased physical activity, not instead of them.²

05 · Wegovy and Ozempic

Wegovy and Ozempic: the semaglutide brands

Wegovy and Ozempic are both semaglutide, a single-action GLP-1 medicine given as a once-weekly injection. They are different products, so the brand name on your prescription matters.

Wegovy's pens come in 0.25mg, 0.5mg, 1mg, 1.7mg and 2.4mg strengths. The 2.4mg dose is the licensed maintenance dose for weight management.¹⁸ You can see current availability on the Wegovy pen page, where a first pen is £99.99 as a first-order price.

Ozempic is semaglutide licensed for type 2 diabetes only; it is not a UK weight-loss medicine, and prescribing it privately for weight loss is off-label. A regulated UK pharmacy will not supply Ozempic for weight loss. NHS access to Wegovy runs through specialist weight-management services; ask your GP.

06 · Liraglutide and tablets

Saxenda, liraglutide and the tablet options

Liraglutide, sold as Saxenda and in products such as Erly, is a daily injection supplied at a concentration of 6mg per millilitre. That daily routine is the main practical difference from once-weekly Mounjaro and Wegovy.

Oral options now exist too. Wegovy tablets contain oral semaglutide, and Foundayo contains orforglipron, taken as a film-coated tablet.²⁰²¹ Tablets suit people who dislike needles, but their trial results should not be compared with the injections as though they were head to head. Check each product page for current prices and availability.

If you want a wider view of needle-based options, our guide to weight loss injection brands compares the pens side by side.

07 · Choosing between brands

How to choose between GLP-1 brands

The brand a prescriber recommends depends on your health history, other medicines and what you have tolerated before. A good consultation covers all of that, not just your BMI.

Practical factors worth raising include: how often you are willing to inject (daily versus weekly), whether you want a pen or a tablet, your current medicines and how you handled earlier treatments. Because tirzepatide slows stomach emptying, it can affect how quickly some oral medicines are absorbed, particularly at the start or when the dose rises. Tell your prescriber about everything you take, especially warfarin or other narrow-margin medicines, insulin or sulfonylureas, where doses may need reducing to avoid low blood sugar.¹

Response is also reviewed. If you have lost less than 5% of your starting weight after 6 months on the highest dose you can tolerate, your prescriber will discuss whether continuing or stopping is right for you.

Whichever brand you consider, buy only from a registered pharmacy. We are GPhC-registered (9012878), and you can check any pharmacy on the GPhC register.¹²

08 · NHS and private access

NHS and private access to GLP-1 brands

Mounjaro is available on the NHS, but access is being phased in over several years. NICE recommends it for adults with a BMI of at least 35 plus at least one weight-related condition, and the NHS primary-care rollout began in June 2025 with the highest-need groups first, initially BMI 40+ with four or more qualifying conditions.⁴⁶

Full rollout is expected to take years, which is why many people who meet the licensed criteria choose regulated private treatment rather than waiting. Private supply is still prescription-only: it follows a free online consultation reviewed by a GPhC-registered prescriber, with ongoing monthly reviews. We source Mounjaro through official LillyDirect supply, so you receive genuine KwikPens, and delivery is free, next-day and tracked in temperature-controlled packaging.

Mounjaro is a prescription-only medicine, used alongside a reduced-calorie diet and increased physical activity. Individual results vary, and this page is information, not a substitute for medical advice.