Can Mounjaro Injections Help with Weight Loss?
- yourmedicals
- Apr 25
- 2 min read
If you’ve been searching for new ways to lose weight, you might have come across something called Mounjaro. These weight loss injections are becoming more popular in the UK, but what exactly are they, and do they work?
Let’s break it down in simple terms.
Mounjaro is the brand name for a medicine called tirzepatide. It was first developed to help people with type 2 diabetes control their blood sugar levels. But during clinical trials, researchers noticed something interesting – many people were also losing a lot of weight.
Because of these results, doctors are now starting to prescribe Mounjaro injections to help with weight loss, even for people who don’t have diabetes.

How Does It Work?
Mounjaro works by mimicking two hormones that naturally occur in your body: GLP-1 and GIP. These hormones help control blood sugar, reduce appetite, and slow down how fast food moves through your stomach. That means you feel full for longer and are less likely to overeat.
It’s not a magic solution, but it can make sticking to a healthy diet and exercise plan a bit easier.
Are Mounjaro Injections Effective?
In clinical studies, people who used Mounjaro injections lost significantly more weight compared to those who didn’t. Some even lost up to 20% of their body weight over time.
Of course, results can vary from person to person. Mounjaro works best when combined with healthy eating, regular movement, and lifestyle changes.
Is It Safe?
Most people tolerate Mounjaro well, but like any medication, it can come with side effects. The most common ones include nausea, diarrhoea, and constipation, especially when you first start the treatment. These usually settle down as your body gets used to it.
It’s also important to speak to your doctor before starting Mounjaro. They’ll check if it’s safe for you and help you understand the risks and benefits.
How Do You Take Mounjaro?
Mounjaro is a once-a-week injection that you can give yourself at home. Your doctor or pharmacist will show you how to use it properly. It’s usually injected into the thigh, stomach, or upper arm.
Can Anyone Use Mounjaro for Weight Loss?
At the moment, Mounjaro is not officially licensed in the UK for weight loss alone – it's still mainly used for type 2 diabetes. But some doctors may prescribe it “off-label” if they think it’s suitable for you. This usually happens if you have a high BMI and other weight-related health issues.
Final Thoughts
A injection for weight loss like Mounjaro are showing real promise. They’re not a quick fix, but they can be a helpful tool if you're struggling to lose weight with diet and exercise alone.
As always, the best first step is to speak to your GP or a weight loss specialist to see what options are right for you.
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