Can I Switch from Mounjaro to Wegovy? What Patients Need to Know

From 1st September 2025, Eli Lilly will be raising the list prices of Mounjaro by 170% across all strengths, making it more expensive for your provider and, in turn, more expensive for you. This isn’t the disruption that you need while undergoing such a pivotal moment in your life, where weight loss has not only been achievable, but management and most importantly, accessible.

At Pharmacy Planet, our priority is to provide clear information and safe options. If you are considering switching from Mounjaro to Wegovy, this guide explains what the change means, why patients switch, and how to do so safely.

Why has the cost of Mounjaro gone up?

According to Eli Lilly, when Mounjaro was first rolled out in the UK, it was issued at a lower market price to be accessible for patients. However, due to European pricing standards, Eli Lilly has now raised their prices in the UK to be compliant with international pricing standards. This comes largely from Donald Trump’s recent debates regarding ‘nation favouring’ when it comes to pricing, which has only caused speculation as well as outrage from all affected groups. 

Has Mounjaro as a product changed?

No, Mounjaro is still the same, a once weekly injectable pen. It still contains tirzepatide as the active ingredient and will continue to be in the same four-dose mechanism in the UK. It is only the cost of the medication itself that will be increasing. 

What is Wegovy?

Wegovy (semaglutide) is another once-weekly injectable medication. Like Mounjaro, it is part of the GLP-1 receptor agonist family and is designed to support weight management. Clinical studies show that patients on Wegovy can lose up to 15% of their body weight over 68 weeks, and it has also been shown to reduce the risk of heart-related events.

Why should I switch from Mounjaro to Wegovy?

Wegovy, when used correctly with diet and exercise, can help you reduce over 15% of your weight within a year. So, if the cost of Mounjaro becomes too steep, moving over to Wegovy would still be a viable and more cost-effective option because Wegovy has not been projected for a price increase. Additionally, if Mounjaro is causing some side effects that may be restricting your treatment, prescribers will refer patients over to Wegovy to see if they are more tolerant of it. 

How do I switch from Mounjaro to Wegovy?

Switching from Mounjaro to Wegovy is as easy as consulting with a member of our clinical team. We understand that a lot of our patients are quite far into their weight loss journeys at the moment, and having to titrate back to the beginning doses can not only be a financial strain, but also a strain on the progress you’ve made. Our clinicians will be able to help you with the most efficient next steps, with your interests and safety at the heart of their practice. 

Final Thoughts on Switching from Mounjaro to Wegovy

The upcoming rise in Mounjaro’s price may be concerning, but it doesn’t mean you need to stop your weight management journey. Switching to Wegovy, or another clinically suitable alternative, can keep you on track without unnecessary strain. Ready to make the switch? Start your consultation and get connected to one of our UK-based clinicians to get exactly what you need to achieve your weight loss goals today.