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 Price List Comparison — UK Costs Explained
Mounjaro (tirzepatide) pricing in the UK varies significantly depending on whether you access it through the NHS or privately. This guide explains the cost of Mounjaro across different doses, compares NHS versus private routes, and shows you what to expect when seeking a prescription. Whether you're exploring private online consultation or NHS specialist services, understanding Mounjaro pricing helps you make an informed decision about weight management options available in the UK.
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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.
Mounjaro Private Prescription Costs in the UK
Private prescription costs for Mounjaro in the UK typically range from £130 to £320 per month, depending on your dose and provider. Pricing usually reflects the strength of the KwikPen you're prescribed — starting doses (2.5 mg and 5 mg) are generally less expensive, whilst higher doses (10 mg, 15 mg) cost more. Each KwikPen contains four weekly injections, so monthly cost effectively covers one month's supply.
- Starting doses (2.5–5 mg): typically £130–£180 per month
- Mid-range doses (7.5–10 mg): typically £180–£240 per month
- Higher doses (12.5–15 mg): typically £240–£320 per month
Private providers also charge for the initial online clinical consultation (usually £15–£50), which is a one-off cost. After prescription, you'll need to purchase Mounjaro through a GPhC-registered pharmacy. Prices may vary between providers, so comparing multiple services can help you find the best value. Use our free GLP-1 weight loss calculator to estimate potential outcomes at different doses — this helps you weigh cost against expected results.
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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
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NHS vs Private Routes for Mounjaro Access
NHS route: Mounjaro is available through NHS specialist tier 3/4 weight management services, but access is severely limited. You'll need a GP referral, and availability varies dramatically by region. Waiting times can extend from several months to over a year in many areas. When available on the NHS, Mounjaro is free at the point of use — you only pay standard prescription charges (£9.65 per item in England, or nothing if you're exempt).
Private route: Faster access through online consultations with UK-licensed prescribers. You'll complete a brief health questionnaire, have a virtual assessment, and receive a prescription within hours or days if approved. Private prescriptions are dispensed by GPhC-registered pharmacies at the costs outlined above. Check your BMI using our free BMI calculator before your consultation — prescribers will ask for your height and weight measurements.
- 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 on the NHS in the UK?
When prescribed through NHS specialist weight management services, Mounjaro is free at the point of use. You pay only the standard prescription charge (£9.65 per item in England, or nothing if exempt). However, NHS access is very limited and availability varies by region — waiting times can be several months to over a year.
What's the difference between Mounjaro and Wegovy pricing in the UK?
Both medications follow similar private pricing models (typically £130–£320/month depending on dose). Mounjaro may be slightly more expensive at higher doses due to its dual GIP/GLP-1 mechanism versus Wegovy's single GLP-1 mechanism. NHS availability is equally limited for both. Your prescriber can advise which is more suitable for your situation.
Do I need to pay for the initial online consultation for a Mounjaro prescription?
Yes, private online consultations typically cost £15–£50 as a one-off fee. This covers the clinical assessment with a UK-licensed prescriber. If approved, you then purchase Mounjaro separately through a pharmacy. Some providers may include the consultation fee in your first prescription cost.
Can I get Mounjaro on prescription from my GP directly?
Most GPs cannot prescribe Mounjaro for weight management directly. NHS access is through specialist tier 3/4 weight management services, which requires a GP referral and regional availability. Private routes bypass this by allowing direct online consultations with prescribers. Ask your GP about local specialist services if you prefer the NHS route.
Is Mounjaro more expensive than other weight loss injections in the UK?
Mounjaro pricing is broadly comparable to Wegovy (both £130–£320/month depending on dose). Saxenda (liraglutide), an older GLP-1 injection, may be slightly cheaper at some private providers but requires daily injections rather than Mounjaro's once-weekly dose. Costs vary between providers, so it's worth comparing services.
Ready to take control of your weight loss journey?
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