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 in many UK adults, though individual results vary. Clinical evidence shows it works differently to other weight loss injections by activating two hormone pathways simultaneously. This guide explains how Mounjaro affects cravings, what NHS guidance says about its use, and what to realistically expect if prescribed in the UK.
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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 Reduces Cravings and Appetite
Mounjaro is a dual GIP and GLP-1 receptor agonist — meaning it activates two natural appetite-regulating pathways that many single-action medications like Wegovy cannot. When you take a Mounjaro injection from your KwikPen, the medication signals to your brain that you feel fuller, reducing the desire to eat between meals and helping food feel more satisfying in smaller portions.
In clinical trials, participants reported:
- Reduced cravings for sweet and savoury foods
- Earlier feeling of fullness when eating
- Less frequent hunger signals throughout the day
- Decreased urge to snack or seek second helpings
The medication slows how quickly food leaves your stomach (gastric emptying), which contributes to the fuller feeling. It also helps your body regulate fat utilisation more efficiently. However, these appetite-suppressing effects typically reduce over time as your body adjusts to the Mounjaro dose.
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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.
NHS Access and Eligibility for Mounjaro in the UK
In the UK, Mounjaro is available through NHS tier 3 specialist weight management services and private online prescribing. NHS eligibility requires a BMI of 30 or above, or 27–29.9 with weight-related health conditions such as type 2 diabetes, high blood pressure, or cardiovascular disease. Access varies significantly by region — some areas have lengthy waiting lists, which is why many UK adults also consider private prescribing through GPhC-registered pharmacies following an online clinical assessment.
Your GP can refer you to local NHS specialist services, or you can explore private options. Either route requires a prescriber to assess your suitability. Use our free GLP-1 weight loss calculator above to estimate potential outcomes, and our BMI calculator to check your current status against NHS thresholds.
- 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.
Will Mounjaro completely stop my food cravings?
Mounjaro significantly reduces cravings for many people, but individual responses vary. Clinical trials show most users experience reduced appetite and stronger fullness signals, but some cravings may persist. Results depend on dose, individual metabolism, and adherence to dietary changes alongside the medication.
How long does it take Mounjaro to stop cravings?
Many people notice reduced cravings within 1–2 weeks of starting. Effects typically increase over 4–12 weeks as your dose is gradually titrated from 2.5mg up to your maintenance dose. Peak appetite suppression usually occurs at higher doses (10–15mg weekly).
Is Mounjaro better than Wegovy for stopping cravings?
Mounjaro's dual GIP+GLP-1 mechanism may be more effective for some people than Wegovy's single GLP-1 action. Clinical data suggests Mounjaro users experience slightly higher average weight loss, but individual response varies. Your prescriber can advise which suits your circumstances better.
Can I get Mounjaro on the NHS in the UK?
Yes, Mounjaro is approved by NICE and available through NHS specialist weight management services (tier 3). You'll need GP referral and assessment of eligibility based on BMI and health conditions. Private prescribing is also available through online clinics without NHS referral.
What if Mounjaro doesn't stop my cravings?
If appetite suppression is insufficient after 12+ weeks at therapeutic doses, discuss alternatives with your prescriber. Dose adjustment, switching to another GLP-1 medication, or adding behavioural support may help. Weight loss injections work best alongside dietary changes and increased physical activity.
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.