Mounjaro price increase 1st September 2025
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What is the difference between Mounjaro and Wegovy?
Both Wegovy and Mounjaro belong to the GLP-1 class of medicines. Wegovy targets a single receptor—GLP-1—whereas Mounjaro is a dual-action agonist that targets both the GLP-1 and GIP receptors. Both are once-weekly weight loss injections that have proven highly effective when prescribed for individuals with a BMI over 27 (with a weight-related condition) or over 30.
Is Wegovy as effective as Mounjaro for weight loss?
Yes, both GLP-1 injections are considered the most effective treatments currently available on the UK market. Studies have shown that Wegovy can lead to a 15% reduction in body weight.
Can I swap to Wegovy due to the Mounjaro price increase?
Yes, many customers are now switching to Wegovy due to the recent price increase announced by Eli Lilly, scheduled to take effect on 1st September 2025.
Do I need to start Wegovy at the beginning again?
Not necessarily — your prescriber will guide you on the best course of action, taking your individual circumstances into account. If you are currently taking Mounjaro 15mg, a Wegovy dose of 2.4mg may be considered a close equivalent for switching. If you’ve only recently started weight loss injections, the estimated equivalent of Mounjaro 2.5mg would be Wegovy 0.25mg.
Do I need to have a gap between swapping to Wegovy?
Yes, swapping from Mounjaro to Wegovy, or vice versa, will involve a gap as advised by your prescriber. Mounjaro has a half-life of 5 days, compared to Wegovy’s 7-day half-life. This difference is taken into account when initiating a switch.
What is the cheapest weight loss Injection Wegovy or Mounjaro?
Wegovy has generally remained slightly more competitively priced compared to Mounjaro. However, prior to the Mounjaro price increase on 1st September 2025, some Wegovy doses were actually more expensive. This will change, with Wegovy becoming the most affordable weight loss injection on the UK market.
Will the Wegovy price increase like Mounjaro?
No, we have no indication that Wegovy prices will follow the Mounjaro price increase on 1st September. At present, Wegovy prices are expected to remain unchanged.
Wegovy ® Weekly Dose Injected same Day Once Weekly
Every 4 weeks our team will discuss your weight loss progress, side effects, and medical changes. Based on this feedback you can remain on your current dose for longer than 4 weeks or titrate upwards to the next strength. Clinical trials showed the greatest weight loss was achieved from the highest maintenance dose.

Every 4 weeks our team will discuss your weight loss progress, side effects, and medical changes. Based on this feedback you can remain on your current dose for longer than 4 weeks or titrate upwards to the next strength. Clinical trials showed the greatest weight loss was achieved from the highest maintenance dose.


Medicine | Price |
---|---|
0.25mg | £145 |
0.5mg | £185 |
1mg | £185 |
1.7mg | £225 |
2.4mg | £265 |

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