Wegovy has become one of the best-known weight loss treatments in the UK, but it isn’t right for everyone. Some people can’t get it through the NHS, others find the cost of private prescriptions steep, and some simply don’t get on with the side effects. If that’s you, the good news is there are several genuine Wegovy alternatives—from other prescription medicines to lifestyle changes and over-the-counter options.
This guide explains the main alternatives available in the UK in 2026, how they compare on effectiveness, cost and access, and how to choose with your GP or pharmacist. The aim is to help you make an informed decision—not to push you toward any single answer.
Key Takeaways
- Wegovy (semaglutide) is an effective prescription weight loss injection, but access, cost and side effects lead some people to look at alternatives.
- The strongest medical alternatives are other prescription medicines—most notably Mounjaro (tirzepatide), plus Saxenda (liraglutide), Orlistat and Mysimba.
- Diet, exercise, sleep and stress management remain the foundation of any plan, with or without medication.
- Over-the-counter supplements are widely available without a prescription, but no supplement matches the weight loss seen with prescription injections.
- The right choice depends on your health, eligibility and budget—so always speak to a healthcare professional before starting or switching treatment.
What Is Wegovy, and Why Look for Alternatives?
Wegovy is the brand name for semaglutide, a prescription weight loss injection made by Novo Nordisk. It belongs to a class of drugs called GLP-1 receptor agonists, which mimic a natural gut hormone that controls appetite and slows how quickly the stomach empties. The result is that you feel fuller for longer and eat less. Used alongside a reduced-calorie diet and exercise, it can help people lose more than 10% of their body weight, and the newer higher dose can push that figure higher.
Like any medicine, it has downsides. The most common side effects are nausea, vomiting, diarrhoea and constipation, especially when starting or increasing the dose. Less commonly it can cause more serious problems such as pancreatitis or gallbladder issues, which is why it’s prescribed and monitored by a clinician.
People typically look for alternatives for four reasons:
- Access: On the NHS, Wegovy is only available through specialist (tier 3) weight management services and strict BMI criteria, so many people don’t qualify or face long waits.
- Cost: Privately, GLP-1 injections run to well over £100 a month, which isn’t sustainable for everyone.
- Side effects: Some people don’t tolerate the nausea or digestive effects and want a gentler option.
- Preference: Some would rather avoid injections or prescription drugs and start with diet, lifestyle or an over-the-counter approach.
Prescription Alternatives to Wegovy
If you want a medical option with comparable evidence behind it, other prescription weight loss treatments are the closest like-for-like alternatives. These should always be prescribed and reviewed by a qualified clinician.
Mounjaro (tirzepatide)
Mounjaro is the alternative most people are now asking about. It’s a weekly injection like Wegovy, but it works on two hormone receptors (GLP-1 and GIP) rather than one. In head-to-head trial data, tirzepatide produced greater average weight loss than standard-dose semaglutide. With the higher-dose Wegovy now approved in the UK, the two are much closer than they were, and both are considered clinically effective. Mounjaro is available through specialist NHS services for eligible patients and via private prescription. We compare them in detail in our PhenQ vs Mounjaro UK guide.
Saxenda (liraglutide)
Saxenda is also a GLP-1 medicine, but it’s a daily injection rather than weekly, and tends to produce more modest weight loss than semaglutide or tirzepatide. It’s an established option and is available on the NHS through specialist services as well as privately.
Orlistat (Xenical / alli)
Orlistat works in a completely different way—it blocks part of the fat you eat from being absorbed in the gut. It’s a tablet rather than an injection, and a lower-strength version (alli) is available from pharmacies without a prescription. Weight loss is generally smaller than with GLP-1 injections, and the main side effects are digestive (oily stools, urgency) if your meals are high in fat.
Mysimba (naltrexone/bupropion)
Mysimba is an oral tablet that combines two medicines to act on appetite and cravings. It’s a non-injection prescription option some people consider, though it isn’t suitable for everyone and has its own contraindications and side effects.
A note on Ozempic: Ozempic contains the same active ingredient as Wegovy (semaglutide) but is licensed in the UK for type 2 diabetes, not for weight loss—so it isn’t a like-for-like Wegovy alternative for that purpose.
| Medication | How it works | Format | Typical weight loss |
|---|---|---|---|
| Mounjaro (tirzepatide) | Dual GLP-1 / GIP agonist | Weekly injection | High (≈15–21% at higher doses) |
| Wegovy (semaglutide) | GLP-1 agonist | Weekly injection | High (≈14–21% depending on dose) |
| Saxenda (liraglutide) | GLP-1 agonist | Daily injection | Moderate (≈5–10%) |
| Orlistat (Xenical / alli) | Blocks fat absorption | Tablet | Modest |
| Mysimba | Appetite/craving regulation | Tablet | Modest |
Figures are approximate averages from clinical trials and vary widely between individuals. They are for general comparison only.
Diet and Lifestyle: The Foundation of Any Plan
Whatever route you take, diet and lifestyle do the heavy lifting—medication works best layered on top of them, not instead of them. The basics are unglamorous but they work:
- A balanced, calorie-aware diet built around whole foods—vegetables, fruit, lean protein and whole grains—while cutting back on sugary food, refined carbs and ultra-processed snacks.
- Regular movement that mixes cardio with some resistance training; the strength work matters because it helps protect muscle while you lose fat.
- Sleep and stress management, since poor sleep and high stress both drive appetite and make weight harder to shift.
- Hydration and consistency—small, sustainable changes beat dramatic short-term diets.
Beyond weight, these changes improve energy, mood, blood pressure and long-term health—benefits no pill or injection delivers on its own.
Herbal, Natural and Over-the-Counter Options
For people who can’t access prescription treatment or want to start with something they can buy directly, over-the-counter (OTC) supplements are an option. It’s important to be realistic: these are food supplements, not medicines, and none of them produce the kind of weight loss seen with GLP-1 injections. The evidence behind individual ingredients is mixed, and “natural” doesn’t automatically mean safe or effective.
Common ingredients you’ll see include green tea extract (linked to a small metabolic effect), caffeine (a temporary energy and appetite effect), glucomannan and other fibres (promoting fullness), and chromium (blood sugar regulation). Garcinia cambogia is widely marketed but has weak evidence and has been linked to liver issues in rare cases.
| Ingredient | Claimed benefit | Things to be aware of |
|---|---|---|
| Green tea extract | Small boost to metabolism / fat burning | Caffeine sensitivity; possible medication interactions |
| Caffeine | Energy, mild appetite suppression | Jitteriness, raised heart rate, poor sleep |
| Glucomannan / fibre | Increased fullness | Bloating; take with plenty of water |
| Chromium | Blood sugar regulation | Limited evidence for weight loss |
| Garcinia cambogia | Appetite suppression | Weak evidence; rare liver concerns |
Supplements aren’t regulated as tightly as medicines, so quality varies. If you go this route, buy from reputable brands, look for third-party testing, and check with a pharmacist—especially if you take other medication or have a health condition.
Access and Cost in the UK: NHS vs Private
Cost and access are usually the deciding factors. On the NHS, prescription weight loss medicines like Wegovy, Mounjaro and Saxenda are provided through specialist weight management services and reserved for people who meet strict criteria, with access being rolled out in phases. If you qualify, you pay only the standard NHS prescription charge (or nothing if exempt).
If you don’t qualify, private prescriptions are available through registered online pharmacies and clinics, but you pay the full cost. Over-the-counter options are the cheapest entry point, though they deliver the least.
| Option | Rough monthly cost (private/UK) | Availability |
|---|---|---|
| GLP-1 injections (Wegovy, Mounjaro, Saxenda) | From around £100–£250+ | NHS (strict criteria) or private prescription |
| Orlistat / Mysimba | Lower than injections | NHS or private prescription; alli OTC |
| Diet & lifestyle changes | Minimal | No prescription needed |
| OTC supplements | Around £20–£60 | Bought directly, no prescription |
Prices are approximate and change frequently; always confirm current costs with the pharmacy or provider, including consultation and delivery fees.
How to Choose—and Why to Get Professional Advice
There’s no single best Wegovy alternative; the right one depends on your BMI and health conditions, whether you’re eligible for NHS treatment, your budget, and how you feel about injections versus tablets or supplements. Many people get the best results by combining approaches—for example, a sustainable diet and exercise routine as the base, with a medication or supplement layered on where appropriate.
Because this is a medical decision, the most important step is talking to a professional. Your GP can assess your health and refer you to specialist services if you qualify; a pharmacist can advise on OTC options and interactions; and a registered dietitian can build a nutrition plan around you. Support groups and reputable online communities can also help with motivation and accountability, which is often the hardest part of any weight loss journey.
Where Does PhenQ Fit In?
PhenQ is one of the better-known over-the-counter weight management supplements in the UK, and it’s an option some people choose when prescription treatment isn’t available to them or they’d prefer to start without a prescription. To be clear, it’s a food supplement, not a GLP-1 medicine—it works differently, and it won’t match the weight loss produced by Wegovy or Mounjaro. What it offers is a non-prescription, stimulant-based formula designed to be used alongside a calorie-controlled diet and exercise. You can read more in the PhenQ directory, and if you’re choosing between them, our PhenQ vs Mounjaro comparison sets out the differences honestly.
Conclusion
Wegovy is effective, but it’s far from the only route to weight loss. For a comparable medical option, Mounjaro and other prescription treatments are the closest alternatives. For a foundation that works for everyone, diet and lifestyle changes come first. And for those who can’t or don’t want to go the prescription route, over-the-counter options like PhenQ are widely available—just with realistic expectations about what a supplement can do.
The best plan is the one that fits your health, your eligibility and your budget—and that you can stick to. Talk it through with your GP, pharmacist or a dietitian before you start, and you’ll be far more likely to see lasting results.
Frequently Asked Questions
What is the best alternative to Wegovy?
For a comparable medical option, Mounjaro (tirzepatide) is the alternative most people consider, as trial data shows strong weight loss results. The best choice for you depends on your health and eligibility, so it should be decided with a clinician.
Is there a Wegovy alternative without a prescription?
There’s no over-the-counter medicine equivalent to Wegovy. Non-prescription routes include diet and lifestyle changes and OTC supplements such as PhenQ, but none match the weight loss of prescription GLP-1 injections.
Can I get Wegovy or its alternatives on the NHS?
Yes, but only if you meet strict criteria and are referred to a specialist weight management service. Access is being rolled out in phases and varies by region, so many people use private prescriptions instead.
Are natural or herbal alternatives to Wegovy safe?
They’re generally low-risk for healthy adults, but supplements aren’t regulated as tightly as medicines, evidence is mixed, and some ingredients can interact with medication. Check with a pharmacist before starting.
How do Wegovy and Mounjaro compare?
Both are weekly GLP-1 injections. Mounjaro also acts on a second receptor (GIP) and produced greater weight loss in head-to-head trials, though the higher-dose Wegovy has narrowed the gap. Both are clinically effective, and a prescriber can advise which suits you.
Can I combine different approaches?
Yes—most successful plans combine diet and exercise with a medication or supplement where appropriate. Just do it under professional guidance so the elements are safe together.
Source
NHS England — Weight management injections (eligibility and access for semaglutide, liraglutide and tirzepatide).
