Switching from Mounjaro® to Wegovy® is generally safe and is a common transition for many patients. Because both medications are GLP-1–based weight loss treatments, the switch is usually designed to be smooth while maintaining weight loss progress.

This guide explains the typical switching timeline, how the Wegovy® starting dose is chosen, and what to expect during the transition.

Use this guide to understand:

In most cases, no long washout period is required when switching from Mounjaro® to Wegovy®.

Typical approach:

This one-week interval helps your body begin clearing Mounjaro® while introducing Wegovy®, which reduces the risk of overlapping side effects.

You do not always need to restart at the lowest Wegovy® dose (0.25 mg) when switching from another GLP-1 medication.

MedExpress prescribers select your Wegovy® starting dose based on:

Tailoring the starting dose helps maintain treatment effectiveness while keeping the transition comfortable for your digestive system.

Although Mounjaro® and Wegovy® are similar treatments, they contain different active ingredients. During the first few weeks after switching, you may notice:

Your appetite may feel slightly different while your body adapts to Wegovy®. This is normal and usually temporary.

Some people experience mild, short-term symptoms such as:

These effects usually settle as you continue following the standard Wegovy® titration schedule.

Switching from Mounjaro® to Wegovy® is usually straightforward. Most patients wait 7 days after their last Mounjaro® dose before starting Wegovy®, and the starting dose is personalised based on prior treatment and tolerability.

If you still need help after reviewing the information above, additional assistance is available.