Losing weight is not just about appearance—it helps reduce the risk of diabetes, heart disease, and many other health problems. Two medicines have become very popular for helping people lose weight: Wegovy and Mounjaro. But which one works better in 2026?
Let’s break it down using the latest research, clinical trials, and health news from trusted sources.
What Are Wegovy and Mounjaro?
Wegovy is the brand name for semaglutide, a GLP-1 receptor agonist. It helps control hunger by acting on brain signals and is approved for chronic weight management in adults and adolescents aged 12 years and above. It also has proven heart benefits in certain patients. Wegovy is now available in both injection and oral tablet forms.
Mounjaro is the brand name for tirzepatide, which is a dual GIP/GLP-1 receptor agonist. It was first approved for type 2 diabetes, but its weight-loss version called Zepbound is now approved for obesity and overweight management in many countries.
Both medicines are given as once-weekly injections and should be used along with diet and exercise for best results.
How Effective Are They for Weight Loss in 2026?
Clinical studies show that both drugs help people lose weight significantly, but Mounjaro leads to more weight loss than Wegovy.
| Medication | Average Weight Loss | Duration | Source |
| Wegovy | ~15% of body weight | ~68 weeks | STEP clinical trials |
| Mounjaro | ~21-23% of body weight | ~72 weeks | SURMOUNT clinical trials |
| Head-to-Head Trial | Wegovy: 13.7%, Mounjaro: 20.2% | 72 weeks | New England Journal of Medicine (2025) |
As per GoodRx, about 84% of people using Mounjaro lost at least 15% of their body weight, while only 50% of Wegovy users reached that same result.
For example:
- If someone weighs 100 kg, Wegovy may help them lose around 13-15 kg
- If someone weighs 100 kg, Mounjaro may help them lose 20-23 kg
Additionally, Novo Nordisk is seeking approval for a higher dose of Wegovy (7.2 mg) which showed nearly 21% weight loss in clinical trials, making it more competitive with Mounjaro.
Safety and Side Effects
Both medicines have similar side effects, mostly related to digestion:
- Nausea
- Vomiting
- Diarrhoea
- Constipation
- Bloating
- Abdominal pain
As per Cleveland Clinic Study, about 6% of people on Mounjaro and 8% on Wegovy stopped taking the drug due to side effects. These are usually mild and go away with time or dose adjustments.
Important: Individuals should consult their doctor about Wegovy side effects and Mounjaro side effects before starting treatment.
Cardiovascular Benefits: A Major Difference
One major difference is that Wegovy has proven cardiovascular benefits. It has been shown to reduce the risk of heart attack, stroke, or cardiovascular death by about 20% in high-risk patients. This makes Wegovy particularly beneficial for people with existing heart disease who are overweight or obese.
Mounjaro is still undergoing long-term trials to determine if it provides the same cardiovascular benefit. A 2025 clinical trial found that Mounjaro provided similar cardiovascular protection to Trulicity (dulaglutide), and Eli Lilly submitted data to the FDA by the end of 2025 for approval of this indication.
Real-World Effectiveness
In clinical trials, patients are monitored closely, but in real life, things can be different. A study from Cleveland Clinic found that many people lose less weight in real life than in trials. This happens because:
- People may stop treatment early
- Miss injections
- Not follow diet and lifestyle plans
- Weight regain after stopping medication
A 2026 study found that approximately two-thirds of patients showed stable weight or continued weight loss during the period after their last GLP-1 medication prescription, while others experienced weight regain.
That’s why doctors stress the importance of combining medication with healthy eating and regular activity. Learn more about effective weight loss strategies and tips on Dr. Rajat Goel’s website.
Cost Comparison: US, Europe, and India (2026 Update)
United States:
Wegovy costs around US $349 per month (with manufacturer savings programmes) for the injection and US $149-299 per month for the oral tablet. Mounjaro costs approximately US $499 per month with savings programmes.
Europe (UK):
In the UK, clinics offer Mounjaro at about £159 (around US $200) per month for starter doses.
India (Updated February 2026):
Wegovy underwent a 37% price reduction in November 2025, making it significantly more affordable:
| Dose (Weekly) | Monthly Price (₹) |
| 0.25 mg | ₹10,850 |
| 0.5 mg & 1 mg | ₹13,850 |
| 1.75 mg & 2.4 mg | ₹16,400 |
Mounjaro costs:
| Dose (Weekly) | Monthly Price (₹) |
| 2.5 mg | ₹13,125 |
| 5 mg | ₹15,000 |
| 10 mg | ₹20,000 |
| 15 mg | ₹25,781 |
For detailed pricing information, visit:
Major Development: Indian pharmaceutical company Dr Reddy’s Laboratories announced in February 2026 that they will launch generic semaglutide (Wegovy) at 50-60% lower prices after the patent expires in March 2026. This could bring monthly costs down to approximately ₹4,000-7,000, making weight loss treatment far more accessible to Indian patients.
Ozempic Launch in India
On December 12, 2025, Novo Nordisk launched Ozempic (semaglutide) in India at even lower prices (₹8,800 – ₹11,175 per month). While officially approved for type 2 diabetes, Ozempic contains the same active ingredient as Wegovy and is effective for weight loss. Learn more about the differences in Ozempic vs Wegovy vs Rybelsus comparison.
Summary Table: Wegovy vs Mounjaro (2026 Update)
| Feature | Wegovy | Mounjaro / Zepbound |
| Drug Type | Semaglutide (GLP-1) | Tirzepatide (GIP/GLP-1) |
| Average Weight Loss | ~15% (up to 21% with 7.2mg dose) | ~21-23% |
| Heart Health Benefit | ✅ Proven (20% risk reduction) | ⏳ Under study |
| Official Use | Weight loss, heart protection, MASH | Diabetes, weight loss |
| Side Effects | Nausea, GI issues | Similar |
| Discontinuation Rate | ~8% | ~6% |
| Weekly Injection | Yes | Yes |
| Oral Tablet Available | ✅ Yes | ❌ No |
| India Price (Monthly) | ₹10,850 – ₹16,400 | ₹13,125 – ₹25,781 |
Which One Should You Choose in 2026?
Choose Mounjaro if:
- Your main goal is maximum weight loss (20-23% body weight reduction)
- You have type 2 diabetes alongside obesity
- You can afford the higher cost
- You want the latest dual-action medication
Choose Wegovy if:
- You want proven cardiovascular protection (especially if you have heart disease)
- You prefer an oral tablet option instead of injections
- You want a more affordable option in India
- You’re concerned about slightly lower side effects
Consider Ozempic if:
- You have type 2 diabetes and want weight loss benefits
- You’re looking for the most cost-effective option in India
- You’re comfortable with off-label use for weight loss under medical supervision
For a detailed comparison, read: Mounjaro vs Ozempic: Which Weight Loss Drug Works Best?
Important Considerations Before Starting Treatment
Both drugs have similar side effects, and both require medical guidance and lifestyle changes. These medications are not magic cures, they are tools to support long-term health and must be used under medical supervision.
Final Advice:
✅ Talk to your doctor before starting either medication
✅ Follow a healthy diet and stay active while using these drugs
✅ Track your weight, side effects, and mental health regularly
✅ Understand proper usage: Learn how to use Mounjaro KwikPen or Wegovy click counting
✅ Consider non-surgical options: Explore gastric balloons or bariatric surgery if medication alone isn’t sufficient
Expert Consultation and GLP-1 Treatment in India
If you’re considering GLP-1 medications like Wegovy or Mounjaro for weight loss, professional medical guidance is essential. With the right support, both medicines can help individuals safely and effectively reach their weight loss goals.
For personalised guidance on weight loss medicines like Wegovy or Mounjaro, contact Dr. Rajat Goel today for an online consultation.
Dr. Rajat Goel is India’s leading bariatric surgeon with over 2000+ successful procedures. He provides comprehensive obesity treatment including:
- GLP-1 medication consultations
- Bariatric surgery
- Non-surgical weight loss solutions
- Personalised diet and lifestyle modification programmes
Medical Disclaimer: This information is for educational purposes only and does not constitute medical advice. Always consult with a qualified healthcare provider before starting any weight loss medication. Individual results may vary.
