If you’re considering prescription weight loss injections, now is a good time to review your options. Starting 1st September 2025, Mounjaro (tirzepatide) will see a price increase across all dose levels in the UK. This has led many patients to explore alternatives like Wegovy (semaglutide), which offer similar benefits with more stable pricing.
Below, we break down the updated prices, how these two treatments compare, and what this means for those looking to begin or continue their weight management plan.
UK Price Changes for Mounjaro
The new UK list prices for GLP-1 injection treatments containing tirzepatide will be:
| Dose | Updated UK List Price (From 1 Sept 2025) |
|---|---|
| 2.5mg | £139 |
| 5mg | £169 |
| 7.5mg | £219 |
| 10mg | £249 |
| 12.5mg | £269 |
| 15mg | £289 |
While these are the official list prices, most private providers in the UK now charge between £145 and £199 depending on dose, availability, and service fees. Some providers may advertise lower prices, but these often include warnings of low stock or delayed delivery.
Is Wegovy Still a Good Alternative?
Wegovy (semaglutide) remains one of the most trusted and widely used GLP-1 treatments for weight loss in the UK. It offers similar weekly dosing, strong clinical results, and more consistent pricing across doses.
As of September 2025, Wegovy prices typically range from:
- £99 for starting doses
- Up to £229 for higher strengths
Comparison: Wegovy vs Mounjaro
| Feature | Mounjaro (Tirzepatide) | Wegovy (Semaglutide) |
| Weekly Injection | Yes | Yes |
| Average Weight Loss | 15% – 22% | 10% – 15% |
| Price Range | £133 – £330+ | £129 – £269 |
| Availability | High demand; stock varies | More widely available |
| Side Effect Profile | Gentler for some | More GI-related symptoms in some |
Both medications are part of the GLP-1 receptor agonist family and work by regulating appetite and helping you feel fuller for longer.
Which One Is Right for You?
There’s no single “best” option – some people respond better to one treatment than the other. It depends on your medical history, weight loss goals, and how well you tolerate potential side effects.
If you’re looking to begin treatment or switch from one option to another, you can check your eligibility through a private online assessment. This can help determine which GLP-1 treatment may be more suitable based on your health profile.
[Check if you’re eligible for a weight loss injection here.]
Already Using Mounjaro?
If you’re on Mounjaro and seeing good results, you may wish to continue – but it’s worth reviewing the updated pricing. Some patients are now considering a switch to Wegovy due to:
- Lower monthly cost
- Greater availability
- Fewer delivery delays
If cost or access is a concern, speak to a provider about your options.
Final Thoughts
Weight loss injections have made a big difference for many people, but rising costs can make access more difficult. With Mounjaro’s price increase this September, Wegovy may offer a more cost-effective alternative without sacrificing clinical results.
If you’re unsure about what option fits best, a private consultation can help guide you. It’s an easy way to learn more about your eligibility and available treatments.
