The UK's most complete GLP-1 guide
Every Question Answered. Every Side Effect Explained.
- How GLP-1 medications work
- Mounjaro vs Wegovy compared
- Injection instructions
- Side effects & solutions
- What to eat on treatment
- FAQs answered
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Mounjaro Meal Ideas in the UK: What to Eat and How to Access Treatment
If you're considering Mounjaro (tirzepatide) for weight management in the UK, understanding both practical nutrition strategies and how to access this prescription-only medicine is essential. Mounjaro works best when combined with a reduced-calorie diet and increased physical activity. This guide covers meal ideas suited to Mounjaro users, plus the realistic costs and NHS versus private access routes available in the UK. Use our free BMI calculator above to check whether you might be eligible, and our GLP-1 weight loss calculator to estimate potential outcomes at different doses.
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Calculate Your BMI Instantly
Enter your height and weight below. Supports both imperial (stone & lbs) and metric (kg). Results include NHS category, healthy weight range, and ethnicity adjustments.
What Is BMI and Why Does It Matter?
Body Mass Index (BMI) is the most widely used screening tool for assessing whether your weight falls within a healthy range. Used by the NHS, GPs, and weight management services across the UK, BMI provides a quick snapshot of your weight relative to your height. The formula is simple: your weight in kilograms divided by your height in metres squared (kg/m²).
While BMI isn't a perfect measure — it doesn't account for muscle mass, bone density, or fat distribution — it remains the standard first step in identifying potential weight-related health risks including type 2 diabetes, cardiovascular disease, high blood pressure, and certain cancers.
The NHS also recommends adjusted thresholds for people of South Asian, Chinese, or Black African heritage — a BMI of 23 or above is classified as overweight, and 27.5 as obese. Our calculator includes this adjustment as a one-click toggle.
Understanding Mounjaro Access and Costs in the UK
Private prescription route: In the UK, Mounjaro is available through private online prescribing services following a clinical assessment. Costs typically range from £129 to £320 per month depending on your dose and provider, with each KwikPen (4 weeks' supply) containing four individual injections. Starting doses are lower (2.5 mg), with gradual increases over 4–5 months to reach maximum dose (15 mg), so your first months may cost less than maintenance therapy.
- NHS route: Mounjaro is available through NHS specialist tier 3 weight management services, but access varies significantly by region and local ICB (Integrated Care Board) decisions. Referral from your GP is required, and waiting lists can be lengthy — in some areas, several months to over a year.
- What affects private cost: Dose level, frequency of dose increases, whether consultations are included, and the specific pharmacy or prescribing service all influence the final price.
- Insurance: Private health insurance in the UK typically does not cover weight management medication, though it's worth checking your specific policy.
When considering the weight loss injection uk market, tirzepatide (Mounjaro) is one of three UK-licensed options alongside semaglutide (Wegovy) and liraglutide (Saxenda).
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No appointments. No waiting rooms. Just care — from a UK-regulated online pharmacy.
How It Works
Three simple steps to understand your weight and take action.
Enter your height and weight in our free calculator. Get your BMI, NHS category, healthy weight range, and ethnicity-adjusted thresholds instantly.
If your BMI suggests you're overweight or obese, explore our GLP-1 calculators to project potential weight loss on Mounjaro or Wegovy.
Use our progress tracker to log your weight weekly, visualise your journey with charts, and stay motivated — all stored privately in your browser.
Free Weight Loss Tools & Guides
Everything you need to understand your weight, explore medication options, and track your progress — completely free.
Nutrition Strategy and Practical Meal Ideas for Mounjaro Users
Mounjaro users typically experience reduced appetite, making smaller, nutrient-dense meals more appropriate than before. Early on, many people find they can only manage 3–4 bites at a time; nausea is common initially, so eating smaller portions throughout the day works better than three large meals.
- Easy starter meals: Scrambled eggs with toast, Greek yoghurt with berries, chicken soup, fish with soft vegetables, mashed potato with salmon, cottage cheese with fruit.
- Foods to avoid initially: Fatty, greasy, or very sugary foods often trigger nausea on Mounjaro. Spicy foods can also be problematic. Stick to bland, protein-rich options early in treatment.
- Hydration: Nausea and diarrhoea are common side effects, so staying hydrated is crucial. Sip water regularly and consider electrolyte drinks if experiencing GI symptoms.
Track your weight progress alongside dietary changes using our free progress tracker to see real results over time.
- Dual GIP/GLP-1 receptor agonist
- Up to 22.5% body weight loss (SURMOUNT-1)
- Weekly injection, dose escalation over 20+ weeks
- Available via private prescription in the UK
- Doses: 2.5mg → 5mg → 7.5mg → 10mg → 12.5mg → 15mg
- GLP-1 receptor agonist
- Up to 15–17% body weight loss (STEP trials)
- Weekly injection, 5-step dose escalation
- NHS & private prescription available
- Doses: 0.25mg → 0.5mg → 1mg → 1.7mg → 2.4mg
Mounjaro vs Wegovy: Head-to-Head
A side-by-side comparison of the two most popular GLP-1 weight loss medications available in the UK.
| Feature | Mounjaro | Wegovy |
|---|---|---|
| Drug class | Dual GIP/GLP-1 agonist | GLP-1 agonist |
| Active ingredient | Tirzepatide | Semaglutide |
| Avg. weight loss | 15–22.5% | 12–17% |
| Key trial | SURMOUNT-1 (2022) | STEP 1 (2021) |
| Max dose | 15 mg weekly | 2.4 mg weekly |
| Escalation period | 20–32 weeks | 16–20 weeks |
| Administration | Weekly injection (pen) | Weekly injection (pen) |
| NHS availability | Private prescription only | NHS & private |
| Approx. private cost | £150–£250/month | £150–£300/month |
| Common side effects | Nausea, diarrhoea, constipation | Nausea, vomiting, diarrhoea |
Data sourced from SURMOUNT-1 and STEP 1 clinical trials. Costs are approximate and vary by provider. Always consult a prescriber.
Am I Eligible for Weight Loss Medication?
In the UK, eligibility for GLP-1 weight loss medications like Mounjaro and Wegovy is based on your BMI and overall health profile.
- BMI of 30 or above (obese)
- Age 18 or over
- No contraindicated conditions
- Committed to lifestyle changes
- BMI of 27 or above
- Plus type 2 diabetes
- Or high blood pressure
- Or obstructive sleep apnoea
Use our BMI calculator to check whether your BMI falls within the eligible range.
How We Built These Tools
Every calculator and guide on myweightcheck is built with accuracy and transparency in mind. Our BMI calculator uses the standard WHO formula with NHS-aligned category thresholds. Our GLP-1 projections are modelled on published clinical trial data from SURMOUNT and STEP studies.
All data stays on your device. We don't require sign-ups, and we don't store your health information on any server. Your progress tracker saves data locally in your browser using localStorage, so only you can see it.
We're based in the UK and our tools are designed specifically for UK users — supporting stone & lbs by default, referencing NHS guidelines, using NICE-approved medication data, and linking to GPhC-registered pharmacies.
Frequently Asked Questions
Common questions about BMI, weight loss medications, and our free UK tools.
How much does Mounjaro cost privately in the UK?
Private Mounjaro costs typically range from £129 to £320 per month depending on your dose level and the prescribing provider. Starting doses (2.5 mg) may cost less than maintenance doses. Each KwikPen supplies 4 weeks of once-weekly injections. Costs escalate as you increase doses over 4–5 months of treatment.
Can I get Mounjaro on the NHS?
Yes, Mounjaro is available through NHS specialist weight management services (tier 3), but availability and waiting times vary significantly by region and local ICB decisions. You'll need a GP referral and may wait several months. Ask your GP about your local NHS weight management pathway.
What's the difference between Mounjaro and Wegovy for weight loss?
Mounjaro (tirzepatide) is a dual GIP and GLP-1 agonist, while Wegovy (semaglutide) is a GLP-1 agonist only. Both are once-weekly injections licensed for weight management in the UK. Mounjaro uses doses from 2.5 to 15 mg, Wegovy from 0.25 to 2.4 mg. Clinical trial data shows slightly higher average weight loss with Mounjaro, but individual results vary significantly.
Do I need a GP consultation before getting Mounjaro privately?
Yes. Private prescription routes require a clinical assessment with a UK-licensed prescriber, typically conducted online. The prescriber will review your medical history, current medications, BMI, and weight-related health conditions to determine suitability. This is a legitimate safeguard — Mounjaro is not suitable for everyone.
What meals work best when starting Mounjaro?
Start with small, bland, protein-rich meals: scrambled eggs, Greek yoghurt, chicken soup, fish with soft vegetables, cottage cheese, and mashed potato. Avoid fatty, greasy, or very sugary foods initially, as they often trigger nausea. Many users find eating frequent small portions works better than three large meals. Hydration is essential due to potential nausea and diarrhoea.
Ready to take control of your weight loss journey?
Start with a free BMI check, explore your GLP-1 options, or begin tracking your progress today. No sign-up. No cost. Just results.