Wegovy vs Mounjaro - Which Weight Loss Injection Works is Best for you?
Medical weight loss injections have transformed the way we approach weight management. At Shape⁸, two treatments come up most often in consultations are Wegovy and Mounjaro.
Both can deliver impressive results, but they work in different ways. This guide will help you understand the differences and decide which could be the right choice for your goals and lifestyle.
What is Wegovy?
Wegovy contains semaglutide a GLP-1 receptor against. It is taken once a week and works by:
- Slowing digestion
- Reducing appetite
- Helping you feel full for longer
Who it's for: Adults with a BMI of 30 or higher, or 27+ with a weight-related health condition such as high blood pressure or type 2 diabetes.
Average results: Clinical studies show around 15% weight loss over 68 weeks when combined with healthy eating and regular exercise.
What is Mounjaro?
Mounjaro contains tirzepatide, which targets two hormones GLP-1 and GIP for a dual effect:
- May lead to greater average weight loss than GLP-1 medication alone.
- Improves blood sugar control
- Suppresses appetite
Who it's for: Approved for type 2 diabetes but widely prescribed for weight loss.
Average results: Studies show 20%+ body loss over 72 weeks with lifestyle changes.
Wegovy vs Mounjaro at a Glance
Wegovy (Semaglutide)
- Targets GLP1 hormone only
- Average weight loss around 25% in 72 weeks
- Approved specifically for weight loss
- Side effects: nausea, constipation, diarrhoea
- Usually more affordable than Mounjaro
- Suitable for women on oral contraceptives
- Dosage strength 0.25mg, 0.5mg, 1mg, 1.7mg, 2.4mg
Mounjaro (Tirzepatide)
- Targets both GLP-1 and GIP hormones
- Average weight loss: around 20%+
- Approved for type 2 diabetes (used for weight loss)
- Side effects similar to Wegovy, sometimes stronger gastrointestinal symptoms
- Typically more expensive than Wegovy
- Dosage strength 2.5mg, 5mg, 7.5mg, 10mg, 12.5mg, 15mg
Possible Side Effects
Both injections can cause:
- Nausea or vomiting
- Constipation or diarrhoea
- Indigestion or bloating
- Reduced appetite
Rare but serious risks include pancreatitis and gallbladder problems, Always start treatment under medical supervision.
Which is best for you?
Your choice will depend on:
- Your weight loss target - Mounjaro may offer greater average results for some people
- Your health history - Especially if you have type 2 diabetes
- Your budget - Wegovy usually more affordable
- Availability - Mounjaro's approval for weight loss varies by country
The Shape⁸ Approach
At Shape⁸, we provide:
- Medically supervised Wegovy and Mounjaro treatment plans
- Personalised support from start to finish
- Ongoing guidance on nutrition, exercise and healthy habits
