In 2025, weight-loss injections such as Mounjaro and Wegovy continue to attract major attention in the UK. Clinical trials show that Mounjaro users lose an average of around 20% of their body weight, while Wegovy users lose about 14% over a little more than a year.
While both medicines can help with significant weight loss, it is important to understand their risks, benefits, and side effects before starting treatment.
How Do Weight Loss Injections Work?
Mounjaro (tirzepatide) and Wegovy (semaglutide) belong to a group of medicines that affect appetite and how your body processes food. They are given as weekly injections and work by mimicking hormones that make you feel full after eating.
Wegovy works on a hormone called GLP-1, while Mounjaro acts on both GLP-1 and another hormone called GIP. This double effect helps reduce appetite more strongly, which is why some studies suggest Mounjaro may lead to greater weight loss compared with Wegovy.
Recent research found that people taking Mounjaro lost about 20 per cent of their body weight, compared to nearly 14 per cent for those using Wegovy. This Wegovy vs Mounjaro comparison proves that both these options can be effective tools for weight loss, especially when combined with diet and exercise.
Are Weight Loss Injections Safe?
The safety of these medicines has been studied in clinical trials, but like any treatment, they come with possible risks. Many people tolerate them well, but side effects are common. Understanding both the benefits and risks of weight loss injections helps in deciding if they are right for you.
Wegovy Side Effects
The most common Wegovy side effects include nausea, constipation, diarrhoea, and stomach pain. These often improve as your body adjusts, but they can be uncomfortable for some people.
Mounjaro Side Effects
Mounjaro side effects are similar, with nausea, vomiting, and digestive changes being the most frequently reported. These usually ease over time, though they may still be challenging for certain users.
Risks of Weight Loss Injections
While these medicines can help with significant weight loss, they are not suitable for everyone. They should only be used under professional supervision and with guidance from our experts. Rare but serious risks of weight loss injections may include gallbladder problems, inflammation of the pancreas, or changes in blood sugar.
For most people, the benefits can outweigh the risks when monitored carefully. However, if you experience persistent side effects or discomfort, you should speak to our pharmacists for advice.
Is Mounjaro Safe for Weight Loss?
Based on recent studies, Mounjaro is safe for weight loss when used under professional supervision. It can be more effective than Wegovy for some people, but the decision depends on your health, medical history, and how well you tolerate the medicine.
Is Wegovy Safe to Use?
Wegovy is also considered safe when monitored closely, and it has been widely used across the UK. It remains a strong option for weight loss, particularly for those who cannot tolerate Mounjaro.
Expert Support for Your Weight Loss Journey
If you are thinking about using weight loss injections, it is important not to make the decision alone. Book your appointment with our experts at Touchwood Pharmacy for safe, personalised advice on treatments such as Mounjaro and Wegovy.
Our experts will review your health, explain the risks and benefits, and guide you in choosing the right approach for your weight loss journey.
