Weight loss injections have become a popular method to treat obesity. For people who struggle with diets alone – treatments like Wegovy and Mounjaro offer new hope. These injectables help control appetite and support long-term fat loss.
A recent health survey in England found that 29% of adults were living with obesity, and nearly two-thirds were either overweight or obese. That’s why the demand for Wegovy Surrey and Mounjaro Surrey is rising quickly.
But which treatment is right for you? Let’s hear it from an expert in aesthetic medicine.
In this article, Dr Natalie Geary, founder of Light Touch Clinic Surrey, compares Wegovy and Mounjaro to help you decide which option may suit your journey.
What is Wegovy?
Wegovy is a prescription weight-loss injection that contains semaglutide. It works by mimicking a natural hormone in the body called GLP-1 (glucagon-like peptide-1). This hormone helps control appetite by sending signals to the brain that you are full. It also slows down digestion and reduces cravings.
The result? You eat less without constantly feeling hungry.
This injectable treatment is suitable for adults with a BMI of 27 or higher – especially those who have struggled to lose weight through diet and exercise alone. It is designed for steady, manageable fat loss – typically around 1 to 2 stone (or 6 to 13 kilograms) over several months.
Wegovy is already being used in NHS obesity clinics and is approved for weight loss treatment in the UK. It is also one of the few medications with evidence showing it can reduce the risk of serious heart-related conditions in people living with obesity.
What is Mounjaro?
Mounjaro is another injectable weight loss medication – but it works slightly differently from Wegovy. Its active ingredient is tirzepatide, a newer drug that copies the effects of two hormones – GLP-1 and GIP. Both hormones play a role in how your body controls appetite, digestion, and blood sugar.
While Wegovy mimics only GLP-1, Mounjaro targets both – offering a dual-action effect. This extra mechanism may be why some patients lose more weight with Mounjaro compared to Wegovy.
However, Mounjaro is newer to the UK market, and availability is more limited. If you are searching for Mounjaro in Surrey, it is important to know that not all clinics offer it yet. More research is also needed to confirm whether it provides the same long-term heart benefits as Wegovy.
Wegovy vs Mounjaro – A Detailed Comparison
Both Wegovy and Mounjaro are weekly weight-loss injections designed to reduce appetite and support long-term fat loss. They work best when combined with a healthy lifestyle and medical supervision. But how do they really compare?
Let’s look at the science, results, and differences side by side.
1. Hormone action
- Wegovy (Semaglutide) mimics GLP-1, a hormone that helps reduce hunger and slow digestion.
- Mounjaro (Tirzepatide) mimics GLP-1 and GIP, offering a dual-action effect. GIP further supports appetite regulation and blood sugar control.
This dual mechanism gives Mounjaro an edge when it comes to appetite suppression.
2. Weight loss results
In a 2025 head-to-head trial published in the New England Journal of Medicine –
- Patients using Mounjaro lost an average of 20.2% of their body weight over 72 weeks.
- Patients using Wegovy lost 13.7% over the same period.
That’s a difference of over 6 percentage points, which is significant – especially for those with a higher starting weight.
3. Waist size reduction
The same study found that Mounjaro users lost more from their waistline – on average 5 cm (about 2 inches) more than those using Wegovy.
This may be an important consideration for people targeting visceral fat or abdominal obesity.
4. Cardiovascular benefits
- Wegovy has strong clinical backing when it comes to heart health. A 2023 study with over 17,000 participants showed it reduced the risk of heart attacks, strokes, and heart-related death by 20%.
- Mounjaro is still being studied for similar long-term cardiovascular outcomes. The early data is promising, but it is not yet approved in the UK for heart-risk reduction.
5. Side effects
While both drugs have similar side effects – mainly digestive issues like nausea or bloating – the same 2025 study showed.
- 6% of people on Mounjaro stopped treatment early due to side effects
- 8% of those on Wegovy did the same
So both are generally well tolerated – especially under medical guidance, but individual experiences may vary.
6. Medical approval status
- Wegovy is fully FDA-approved for weight loss in adults with obesity or overweight and at least one weight-related condition. It is also approved by NICE in the UK for weight management.
- Mounjaro, on the other hand, is currently FDA-approved only for the treatment of type 2 diabetes. While it shows strong weight loss results – it has not yet been FDA-approved specifically for obesity as of 2025.
7. Availability in Surrey
- Wegovy is widely available in the UK and offered at trusted clinics like Light Touch Clinic Surrey, where you get personalized care.
- Mounjaro availability is still limited as it continues to roll out in private healthcare and LTC settings.
Quick Comparison Table
| Feature | Wegovy (Semaglutide) | Mounjaro (Tirzepatide) |
| Hormone Target | GLP-1 | GLP-1 + GIP |
| Average Weight Loss | 13.7% body weight | 20.2% body weight |
| Waistline Reduction | Less (baseline) | More (5 cm extra on average) |
| Cardiovascular Benefits | Proven 20% risk reduction | Not yet proven |
| Side Effect Dropouts | 8% | 6% |
| FDA Approval | Approved for weight loss | Approved for type 2 diabetes only |
| UK Approval | Approved by NICE | Still expanding |
| Surrey Availability | Widely available at clinics | Limited access, growing interest |
Final Thoughts – Which One is Right for You?
Both Wegovy Surrey and Mounjaro are powerful tools for weight loss – especially for people who have struggled with traditional diet and exercise alone.
While Mounjaro may offer greater weight reduction in some cases, Wegovy has the advantage of being approved specifically for weight management, both in the UK and the US.
Wegovy also has proven long-term heart benefits and is already available at trusted clinics across the UK, including Surrey.
Whichever option you are considering – the most important factor is medical supervision. Light Touch Clinic offers weight loss injections with personalized treatment plans and lifestyle support. Click here to get more information about the treatments.
Dr. Natalie Geary offers a comprehensive weight loss programme customized to your goals and medical history. The plan includes –
- Microdosing to reduce side effects and ease your body into treatment
- Regular four-week check-ins to monitor progress
- Practical lifestyle advice, including nutrition, intermittent fasting, and EMS support
This holistic care makes the weight loss injectables treatment pathway not only effective but also sustainable. If you are ready to take control of your weight in a doctor-led setting, Light Touch Clinic is here to guide you every step of the way.
