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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How Much Does 7.5mg Mounjaro Cost in the UK?
The 7.5mg dose of Mounjaro (tirzepatide) is an escalation dose typically used after 8–12 weeks of treatment. Cost varies significantly depending on whether you access it through the NHS or privately. Private prescriptions in the UK generally range from £180–£250 per pen, though prices vary by provider. NHS access is free at point of use but availability is limited and regional variation is significant. This guide explains UK pricing, access routes, and what affects cost.
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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.
Private Prescription Pricing for Mounjaro in the UK
Private prescription costs for Mounjaro depend on the dose and the prescribing provider. At the 7.5mg dose, you can typically expect to pay between £180–£250 per KwikPen (which contains 4 weekly injections, lasting approximately 4 weeks). Some providers offer tirzepatide at slightly lower costs, whilst others charge more depending on their clinical service level and consultation fees.
- Initial consultation fees: typically £25–£60 for the first online assessment
- Follow-up consultations: often £15–£40 per follow-up if dose adjustments are needed
- Total cost for 12 weeks of treatment: approximately £540–£750 including the 2.5mg starting dose, 5mg dose, and 7.5mg dose
- Prescription validity: Private prescriptions are valid for 6 months, allowing flexibility in when you collect from a pharmacy
Prices do not include delivery fees if ordering online, though many UK providers offer free delivery on prescriptions.
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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 vs Private Routes: What You Need to Know
The NHS provides Mounjaro free at the point of use through specialist tier 3 weight management services, but access is extremely limited and varies by region. Your GP can refer you to your local specialist service, though waiting times are often 6–18 months in many areas. Private online prescribing offers faster access — you complete an online consultation with a UK-licensed prescriber, and if approved, the prescription is sent to a GPhC-registered pharmacy within 24–48 hours. No NHS referral is needed. Use our free GLP-1 weight loss calculator to estimate your potential results, and our BMI calculator to check your starting position before consulting a prescriber.
- 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.
Why is the 7.5mg Mounjaro dose more expensive than lower doses?
It isn't — pricing is typically per pen, not per dose. A 7.5mg pen costs roughly the same as a 2.5mg or 5mg pen (around £180–£250) because each contains 4 weekly injections. The difference is that you'll move through doses faster as you titrate up, meaning you may need more pens over a shorter timeframe during the escalation phase.
Can I get 7.5mg Mounjaro on the NHS?
Only through specialist tier 3 weight management services following a referral from your GP. NHS provision is extremely limited and varies by region. Many areas have long waiting lists. Private prescription access is faster and does not require an NHS referral — you can access it through a UK-licensed online prescriber within days.
What is the total cost of a full Mounjaro treatment course in the UK?
A full treatment course from 2.5mg to 15mg (maximum dose) typically requires 18–24 weeks. At private costs of £180–£250 per pen, the total cost ranges from approximately £810–£1,500 for the full escalation and initial maintenance phase, depending on how long you remain on each dose and which provider you use.
Are there cheaper alternatives to Mounjaro in the UK?
Wegovy (semaglutide) is another GLP-1 injection licensed for weight management in the UK, with similar private costs. Saxenda (liraglutide) is a daily injection option, also available privately. All require prescription and clinical assessment. Pricing varies by provider and dose, so comparing quotes across registered UK prescribers is recommended.
Does private insurance cover Mounjaro costs in the UK?
Most standard UK private health insurance plans do not cover weight loss medications — these are typically classified as cosmetic or lifestyle treatments. Check your specific policy documents, or contact your insurer directly. NHS coverage is free but limited by availability and regional funding decisions.
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.