Losing weight is not always easy, especially if diet and exercise alone haven’t worked for you. Thankfully, medical options like GLP-1 weight loss injections are now available in the UK. Two of the most popular names are Wegovy and Mounjaro — but which one is right for you?
This article will help you understand the difference between Wegovy vs Mounjaro, how they work and what to expect if you’re thinking about using them to support your weight loss journey.
What Are GLP-1 Weight Loss Injections?
GLP-1 injections are medicines that copy a natural hormone in your body which helps control hunger and blood sugar levels. They work by:
- Making you feel full more quickly
- Slowing down digestion
- Reducing food cravings
These injections are usually given once a week and should be used along with a healthy diet and regular physical activity.
Now, let’s compare Wegovy for weight loss and Mounjaro for weight loss in more detail.
Wegovy for Weight Loss
Wegovy contains semaglutide, which mimics the GLP-1 hormone. It was approved in the UK specifically for weight loss in adults with a BMI of 30 or higher or 27 and above if they have related health conditions like high blood pressure or type 2 diabetes.
Key Points:
- Taken once a week as an injection
- Helps reduce appetite and calorie intake
- Shown to help people lose up to 15% of their body weight
- Approved for weight loss in the UK
- Works best when combined with diet and exercise
Mounjaro for Weight Loss
Mounjaro contains a newer medicine called tirzepatide, which acts on two hormones — GLP-1 and GIP. This dual action may offer even greater weight loss results than Wegovy.
In the UK, Mounjaro is currently approved for managing type 2 diabetes, but professionals are also prescribing it off-label for weight loss, especially in private clinics.
Key Points:
- Taken once a week as an injection
- Can help reduce body weight by up to 22% in some studies
- Works on two hunger-regulating hormones
- Not yet officially approved for weight loss in the UK
- May have stronger appetite-reducing effects than Wegovy
Wegovy vs Mounjaro for Weight Loss: What’s the Difference?
Here’s a simple comparison of the two options:
| Feature | Wegovy | Mounjaro |
| Active Ingredient | Semaglutide | Tirzepatide |
| Hormones Targeted | GLP-1 | GLP-1 & GIP |
| UK Approval for Weight Loss | Yes | No (approved for diabetes) |
| Average Weight Loss | Up to 15% | Up to 22% |
| Weekly Injection | Yes | Yes |
| Side Effects | Nausea, tiredness, digestive issues | Similar, may be stronger |
Which One is Better?
That depends on your personal health needs and medical history.
Choose Wegovy if:
- You want a medicine that is officially approved for weight loss in the UK.
- You prefer a more established treatment with clear dosage plans.
- You have weight-related health issues like diabetes or high blood pressure.
Consider Mounjaro if:
- You are under the care of a private weight loss expert.
- You’re comfortable using a newer treatment.
- You’ve tried other injections and want stronger effects.
Both medicines can help you lose weight, but neither is a magic fix. They work best when used alongside lifestyle changes and under medical supervision.
Want to Know Which Option is Right for You?
Our healthcare team will help you compare your options, explain the benefits and risks of Wegovy and Mounjaro and create a personalised plan for safe and steady weight loss. Book your weight loss consultation at Touchwood Pharmacy today.
