Can I Change from Mounjaro to Wegovy?

Mounjaro (tirzepatide) and Wegovy (semaglutide) are both once-weekly injectable prescription-only medicines used in weight management, but they work in distinct ways. Mounjaro acts on two receptors — GIP and GLP-1 — while Wegovy acts on GLP-1 receptors alone. Both are started at a lower dose and adjusted over time, with any titration schedule set by the prescriber based on your individual response and tolerability.

Because the medicines work differently and come in different dose strengths, a switch is not a simple like-for-like swap. Your prescriber will consider factors such as how you have responded to your current medicine, any side effects you have experienced, your overall health picture, and whether the alternative is appropriate for you. There is no single conversion chart that applies to everyone.

Some common reasons people ask about changing from Mounjaro to Wegovy include persistent side effects, a change in circumstances, supply considerations, or simply wanting to explore options. Whatever your reason, the conversation starts with your healthcare professional — not with adjusting or stopping your current medicine on your own.

For a fuller look at what this change might involve, the page on moving between Mounjaro and Wegovy goes into more practical detail. You can also read more about the practicalities of a Mounjaro-to-Wegovy switch and what to expect from the process. For broader context on Mounjaro itself, the Mounjaro overview covers how the medicine works and what to track on it.

If you are thinking about switching because your injection schedule feels difficult to manage — for example, you are unsure whether you can change your Mounjaro injection day — that is also worth raising with your prescriber, as a day adjustment may be possible without any change of medicine.

When you are considering a medication change, having a clear record of your current journey is genuinely useful — both for your own clarity and to bring to a prescriber appointment. The most relevant feature here is GLP Trackr's side-effect and dose logging: you can record every injection (date, dose strength, and site), log any symptoms you have been experiencing, and spot patterns over time that might otherwise be hard to articulate in a short appointment.

The app's doctor report feature pulls this together into a summary you can share with your prescriber, so instead of trying to recall how you felt three weeks ago, you have a clear picture ready. If a switch does go ahead and you move to Wegovy, GLP Trackr supports both medicines — your dose log, injection-site rotation tracker, and daily check-ins carry across seamlessly.

Whatever decision you and your prescriber reach, consistent tracking means you will have the data to understand how any change affects you. GLP Trackr is free to try for 7 days — download it on the App Store or Google Play and start building that record today.

Any decision about changing, stopping, or switching your prescribed medicine should be made with your prescriber or doctor, who knows your full medical history. If you experience severe or persistent side effects with your current medicine, contact your healthcare professional promptly rather than making any changes on your own.