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
Free tracker included with every download this week
Does Mounjaro Stop Cravings?
Mounjaro (tirzepatide) may help reduce food cravings and appetite, but it doesn't "stop" cravings entirely — instead, it works by activating natural hunger-regulating pathways in your brain and gut. Clinical trials showed that people using Mounjaro reported feeling fuller after smaller meals and experiencing fewer urges to eat between meals. However, individual experiences vary, and cravings can still occur. Understanding how Mounjaro affects appetite control can help you decide whether this prescription-only injection might be suitable for you alongside lifestyle changes.
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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.
How Mounjaro Works on Appetite and Cravings
Mounjaro is a dual GIP and GLP-1 receptor agonist — a key difference from other weight loss injections like Wegovy (semaglutide), which targets only GLP-1. This dual mechanism may enhance appetite suppression:
- GLP-1 activation: Signals fullness to the brain, reduces hunger hormones, and slows how quickly food leaves your stomach
- GIP activation: Works alongside GLP-1 to regulate appetite and may improve how your body utilises fats
- Practical effect: Many users report less interest in food, reduced cravings for sugary or high-fat foods, and feeling satisfied with smaller portions
However, appetite suppression isn't assured — some people experience stronger effects than others. Mounjaro works best when combined with dietary changes and increased physical activity. The effect is gradual; most people notice reduced cravings after 4–8 weeks at therapeutic doses (5 mg or higher).
Clinically BackedWeight Loss
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.
What Clinical Evidence Shows
The SURMOUNT-1 clinical trial of Mounjaro showed participants lost an average of 20.9% of their body weight at the highest dose (15 mg) over 72 weeks. Alongside measurable weight loss, participants reported significant reductions in appetite and food preoccupation — key indicators that cravings had diminished. However, clinical trials differ from real-world experience: results vary widely between individuals, and some people report persistent cravings despite using Mounjaro at therapeutic doses. Tolerance can develop over time. Your GP or a licensed prescriber can assess whether Mounjaro is appropriate for you and discuss realistic expectations about appetite control based on your individual health profile.
- 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.
Does Mounjaro completely eliminate food cravings?
No. Mounjaro may significantly reduce cravings and appetite, but doesn't eliminate them entirely. You may still experience cravings, especially early in treatment or at lower doses. The medication works best alongside conscious dietary choices and lifestyle changes, not as a replacement for them.
How long does it take for Mounjaro to reduce cravings?
Most people notice reduced appetite and fewer cravings after 4–8 weeks on a therapeutic dose (5 mg or higher). The effect builds gradually as your dose increases through the titration schedule. Some notice changes within 2–3 weeks; others take longer. Individual timelines vary significantly.
Is Mounjaro or Wegovy better for stopping cravings?
Mounjaro's dual GIP+GLP-1 mechanism may offer stronger appetite suppression than Wegovy's single GLP-1 mechanism, though clinical trial data shows similar average weight loss. Craving reduction is highly individual. A prescriber can help determine which is more suitable based on your health profile and previous medication responses.
Can I use MyWeightCheck tools to track cravings and progress?
Yes. Our free GLP-1 weight loss calculator helps you project potential outcomes, and our progress tracker lets you log weight, mood, and appetite changes over time. These tools help you monitor whether Mounjaro is working for your specific situation and identify patterns in your cravings.
What happens to cravings if I stop Mounjaro?
Appetite and cravings typically return to baseline within weeks of stopping Mounjaro. This is why sustainable weight management requires ongoing lifestyle changes — diet and exercise habits you've built during treatment. Your GP can discuss long-term management strategies with you.
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.