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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Recipes and Meal Ideas for Mounjaro Treatment
If you're taking Mounjaro (tirzepatide) as a prescription-only weight management injection in the UK, eating the right foods can support your treatment plan. Many people using Mounjaro experience reduced appetite and altered food preferences, making meal planning important. This guide offers practical recipe suggestions and food choices that work well alongside this NHS-recognised medication, helping you make informed dietary decisions during your treatment journey.
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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.
Food Choices That Work Well With Mounjaro
When taking Mounjaro on the NHS or through private prescription, your body's appetite regulation changes. Many people find they need smaller portions and feel full more quickly. Focus on nutrient-dense foods that provide good nutrition without excessive volume: lean proteins (chicken, fish, eggs), non-starchy vegetables (broccoli, spinach, peppers), and whole grains in modest amounts. Avoid foods that are high in fat or sugar, as these can cause nausea or stomach discomfort — common side effects during the early weeks of treatment. Staying hydrated is essential; dehydration can worsen nausea and constipation. Many people find smaller, frequent meals easier to manage than three large meals. Your GP or prescriber may also suggest coordinating your eating pattern with when Mounjaro works best in your body. Use our free BMI calculator above to track how your weight responds as you adjust your diet alongside this medication.
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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.
Simple Mounjaro-Friendly Recipe Ideas
Breakfast: Eggs with toast and tomatoes, Greek yoghurt with berries, oatmeal with cinnamon. Lunch: Grilled chicken with roasted vegetables, lentil soup, tuna salad with mixed greens. Dinner: Baked salmon with broccoli, lean mince with sweet potato, stir-fried tofu with vegetable medley. Snacks: Nuts, cheese, fruit, natural yoghurt. Portion sizes matter — many people taking Mounjaro find success with portions about half their pre-treatment size. Remember that food preferences often change during treatment, so flexibility and listening to your hunger signals is key. Track your progress and dietary patterns using our free progress tracker to identify what works best for your body.
- 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.
Can I eat normally while taking Mounjaro on the NHS?
Most people taking Mounjaro experience reduced appetite, so "normal" portion sizes may feel too large. Many NHS patients find they eat less automatically and feel satisfied with smaller meals. Your prescriber can offer dietary guidance tailored to your individual response.
What foods should I avoid when taking Mounjaro?
Avoid high-fat, greasy, or very sweet foods — these commonly trigger nausea and stomach upset in the first few weeks. Also limit carbonated drinks and very hot foods initially. Most people tolerate plain, protein-rich foods and vegetables better than rich or processed foods.
Will Mounjaro change my food preferences?
Yes — many people report that their cravings and preferences shift during treatment. Foods they previously enjoyed may no longer appeal. This is a normal response to how tirzepatide affects appetite-regulating hormones and typically settles as your body adjusts to each dose.
How do recipes fit into the NHS Mounjaro eligibility criteria?
Dietary changes support Mounjaro treatment but aren't part of NHS eligibility assessment. The NHS prescribes Mounjaro based on BMI and health conditions. Use our free BMI calculator to check where you stand, and your GP can discuss whether prescription treatment is appropriate for you.
Should I follow a specific diet while taking Mounjaro?
Your prescriber or a NHS dietitian can recommend an eating plan suited to your health needs and Mounjaro response. There's no single "Mounjaro diet" — the focus is on balanced, nutrient-dense foods in smaller portions that you tolerate well. Many people find a reduced-calorie approach works naturally alongside the medication's appetite-suppressing effects.
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.