By weeks 3 and 4, Mounjaro should be fully active in your system, and you’ll likely start noticing its effects, particularly feeling fuller for longer periods between meals.

After 4 weeks of treatment, study shows that the average weight loss is around 4%, although this can vary from person to person.

Although you’ll still be on the low starting 2.5mg dose, you should continue to focus on eating balanced meals that contain lean proteins, fibre and healthy fats to support your weight loss targets.

At this stage your Mounjaro dose is likely to be increased to 5mg per week. So, you may experience some of the side effects returning or increasing as your dose titrates (gradually increases) up. These should settle down again once your body gets used to the increased medication.

In most cases you can manage mild side effects at home with rest, drinking plenty of fluids, and taking over-the-counter painkillers, if needed. However, if you are concerned or finding any of the Mounjaro side effects difficult to manage, contact your doctor for advice.

After 8 weeks of Mounajro, the average weight loss is around 6%.

After 8 weeks, if you have tolerated your current Mounjaro dose well, it may be increased to 7.5mg per week.

During these weeks, you are likely to start seeing some of the effects of weight loss. After 12 weeks of treatment, you might expect to lose up to 8% of your body weight.

From week 13 onwards, the weight loss results you can achieve with Mounjaro should become more consistent. Over time, you could lose up to 22.5% of your body weight, depending on how long you use the weight loss injection for and the maintenance dose you choose.

The maintenance dose for Mounjaro is 15mg per week, but you may choose to use a lower dose if you find it difficult to tolerate the side effects associated with a high dose, or if you think a lower dose is more effective for you.