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 Mounjaro 7.5 Mg Cost in the UK?
Mounjaro (tirzepatide) 7.5 mg is a mid-range dose prescribed during the weight loss titration phase. In the UK, the cost of Mounjaro 7.5 mg varies significantly depending on whether you access it through the NHS or via a private prescription. This guide explains both routes, what you can expect to pay, and how to access this medication legally and safely through a UK-licensed prescriber. Use our free GLP-1 weight loss calculator above to explore potential outcomes at different doses.
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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 Costs for Mounjaro 7.5 Mg
Private costs for Mounjaro 7.5 mg in the UK typically range from £129 to £320 per month, depending on the provider and whether the consultation is included. A single KwikPen contains four doses and represents approximately four weeks of treatment. At the 7.5 mg dose, you are in the mid-escalation phase of treatment — usually reached around weeks 9–12 after starting.
- Private online consultations with UK-licensed prescribers typically cost £50–£100, though some providers include this in the medication price
- The medication itself (four KwikPen doses per month) costs £79–£220 depending on provider and dose frequency
- Total monthly outlay ranges from approximately £129–£320 depending on consultation and supply costs
- Prices are not regulated by NICE and vary between GPhC-registered pharmacies offering private prescriptions
Most private providers require an online consultation before issuing a prescription. Your prescriber will assess your BMI, health history, and eligibility before proceeding. Visit our free BMI calculator above to check where you fall on the NHS eligibility scale — providers use similar criteria.
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.
NHS Access vs Private Route — Cost and Timeline
NHS access: If you receive Mounjaro through the NHS, there is no medication cost (though prescription fees apply in England at £9.90 per item). However, NHS access to tirzepatide is limited to specialist tier 3/tier 4 weight management services through referral from your GP — not standard GP prescription. Waiting lists for specialist services vary significantly by region (ICB), with some areas reporting waits of 6–18 months or longer.
Private access: Faster than NHS but requires upfront payment. Most private prescriptions are issued following an online consultation within 24–48 hours. Private prescription Mounjaro is dispensed by GPhC-registered pharmacies and is fully legal in the UK when prescribed by a licensed healthcare professional. Many people use private prescription as a bridge while on NHS waiting lists, then transition to NHS supply once approved.
- 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.
Is Mounjaro available on the NHS?
Yes, tirzepatide (Mounjaro) is approved by NICE for NHS use within specialist weight management services (tier 3/4). Access is through referral from your GP — not standard GP prescription. Availability varies by region, and waiting lists can be lengthy in many areas.
How much does a Mounjaro KwikPen cost privately?
A single KwikPen (four doses, one month supply) costs approximately £79–£220 depending on the provider. Total monthly cost including the dose you're on (7.5 mg) ranges from £129–£320 when consultation and delivery are included.
What is included in the private cost?
Private Mounjaro costs typically cover the medication (KwikPen), the online consultation with a UK-licensed prescriber, prescription issuance, pharmacy dispensing, and delivery. Some providers bundle all costs; others separate them. Always check what's included before committing.
Can I switch from private to NHS Mounjaro?
Yes. Many people start privately while waiting for NHS specialist weight management assessment. Once approved through NHS tier 3/4 services, you can transition to NHS supply. Discuss this with your NHS GP or specialist service.
How do I know if I'm eligible for Mounjaro cost-wise?
Check your BMI using our free BMI calculator above. NHS and private providers assess eligibility using similar criteria: BMI ≥30, or BMI 27–29.9 with weight-related health conditions. Your prescriber will confirm eligibility at consultation.
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.