How Does Mounjaro Work for Weight Loss?
Mounjaro mimics two essential gut hormones that regulate hunger, blood sugar, and fat storage:
GLP-1 (Glucagon-Like Peptide-1)- Slows down digestion, so you feel full for longer
- Reduces appetite, helping with portion control
- Stabilises blood sugar, reducing cravings
- Enhances insulin sensitivity, helping the body process glucose efficiently
- Boosts fat metabolism, promoting more effective weight loss
- Reduces fat storage, preventing weight regain
By combining these two mechanisms, Mounjaro delivers superior weight loss results, often surpassing other GLP-1-only medications like Wegovy.
Find out moreClinical Effectiveness: How Much Weight Can I Lose with Mounjaro?
Clinical trials show that patients using Mounjaro for weight loss can lose up to 20% of their body weight over a 12-18 month period when combined with lifestyle modifications.
Studies found that:- At 72 weeks, patients on the highest dose (15mg) lost an average of 22.5% of their body weight
- Even at lower doses, weight loss ranged from 15-18%, significantly higher than Wegovy, which averages 12-15%
- Improved metabolic markers such as blood pressure, cholesterol levels, and reduced inflammation
Who Can Use Mounjaro for Weight Loss?
Mounjaro is approved for weight loss in the UK under the following criteria:- BMI of 30+ (Obese Category)
- BMI of 27+ with weight-related conditions (Diabetes, Hypertension, PCOS, etc.)
- Patients struggling with weight loss despite diet and exercise
- People looking for medical weight loss solutions without surgery
Who Should NOT Take Mounjaro? (Contraindications)
Mounjaro is not suitable for individuals with:- Personal or family history of Medullary Thyroid Cancer (MTC)
- Multiple Endocrine Neoplasia Syndrome Type 2 (MEN2)
- Pregnancy or breastfeeding (Safety is not yet established)
- Those with severe kidney or liver disease (Discuss with a doctor)
- Those with a history of severe gastrointestinal disorders
Benefits of Mounjaro for Weight Loss
Mounjaro offers several advantages over other weight loss medications:- More effective than Wegovy
- Dual-action mechanism – Targets both GLP-1 and GIP receptors for superior results
- Sustained appetite control – Reduces hunger & prevents cravings
- Once-weekly dosing – Simple, easy-to-use injection with no daily pills
- Improves metabolic health – Stabilises blood sugar & insulin resistance
- Long-term success – Helps maintain weight loss with proper support
What Are the Risks & Side Effects of Mounjaro?
Like all medications, Mounjaro comes with potential risks and side effects. Most are mild and temporary, but some require medical attention.
Common Side Effects (Mild – Typically Improve in Weeks 1-4)- Nausea – Most common; manageable by eating smaller meals
- Diarrhoea or constipation – Due to slowed digestion; improves over time
- Fatigue or mild headaches – Temporary as the body adjusts
- Mild dizziness – Due to blood sugar regulation changes
- Vomiting – If severe, hydration support may be needed
- Injection site reactions – Mild redness or swelling
- Heartburn or bloating – Can be managed with dietary adjustments
- Severe stomach pain – Could indicate pancreatitis (seek immediate help)
- Signs of allergic reaction – Rash, swelling, breathing difficulty (stop use & seek emergency care)
- Gallbladder issues – Rare cases of gallstones or bile duct problems
- Start with a low dose and gradually increase
- Eat smaller, protein-rich meals
- Stay hydrated and avoid alcohol
- Monitor blood sugar levels, especially if diabetic
Frequently Asked Questions
- How quickly does Mounjaro work for weight loss?
Patients on Mounjaro typically begin noticing weight loss within the first 4-8 weeks. However, the full effects are usually seen over 6-12 months, with gradual and sustained fat loss rather than rapid, unsustainable weight reduction.
Since Mounjaro is available privately on the Isle of Man, patients can access treatment without NHS delays by booking a free consultation at Tracey Bell Clinic.
- How quickly does Mounjaro work for weight loss?
- Is Mounjaro better than Wegovy for weight loss?
Yes, Mounjaro (Tirzepatide) is more effective than Wegovy (Semaglutide) for weight loss, according to multiple clinical studies. The key reason is Mounjaro’s dual-hormone mechanism:
Patients in the Isle of Man looking for the most effective medical weight loss solution should consider Mounjaro as it provides better long-term weight loss outcomes.
- Is Mounjaro better than Wegovy for weight loss?
- Can I get Mounjaro on the NHS in the Isle of Man?
No, Mounjaro is not currently available on the NHS in the Isle of Man. It is only available privately at clinics like Tracey Bell Clinic.
- Can I get Mounjaro on the NHS in the Isle of Man?
- What happens if I stop taking Mounjaro?
Stopping Mounjaro may result in weight regain, especially if lifestyle changes are not maintained.
Mounjaro works by altering appetite signals and metabolism, so when stopped, the body may revert to previous eating patterns.Patients who continue healthy habits (balanced diet, exercise, and portion control) tend to maintain long-term weight loss, even after stopping treatment.
At Tracey Bell Clinic, we provide comprehensive lifestyle support alongside Mounjaro to help prevent weight regain and maintain results.
- What happens if I stop taking Mounjaro?
- Can I take Mounjaro if I don’t have diabetes?
Yes, Mounjaro is approved for weight loss in non-diabetic patients who meet the BMI criteria:
While originally developed for type 2 diabetes, Mounjaro has been extensively tested and is now prescribed exclusively for weight loss in eligible non-diabetic patients.
- Can I take Mounjaro if I don’t have diabetes?
- Do I need to change my diet while on Mounjaro?
A strict diet is not required, but healthy eating enhances results. Eating protein-rich meals to maintain muscle mass. Reducing processed sugars & refined carbs to help blood sugar balance. Increasing fibre intake to aid digestion and staying hydrated to prevent nausea.
We provide nutritional guidance and support as part of our comprehensive weight loss programme.
- Do I need to change my diet while on Mounjaro?
- How long should I stay on Mounjaro?
For best results, a minimum 12-week programme is recommended.
Typical Treatment Timeline:
- 3-6 months: Noticeable weight loss, appetite suppression, improved energy.
- 6-12 months: Peak fat-burning stage, stabilised metabolism.
- 12+ months: Long-term weight management, maintenance phase.
Some patients choose to stay on low-dose maintenance therapy after reaching their goal weight.
- How long should I stay on Mounjaro?
- Does Mounjaro interact with other medications?
Typical Treatment Timeline:
- Diabetes medications – Can lower blood sugar too much.
- Blood pressure medications – May require dose adjustments.
- Certain digestive drugs – Can slow absorption.
At Tracey Bell Clinic, we conduct a full medical assessment before prescribing Mounjaro.
- Does Mounjaro interact with other medications?
