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 10mg Price in the UK
Mounjaro 10mg is a prescription-only weight loss injection containing tirzepatide, a dual GIP and GLP-1 receptor agonist. The cost of Mounjaro in the UK varies significantly depending on whether you access it through the NHS or private prescription. NHS availability is limited to specialist weight management services with long waiting lists in many regions, whilst private prescribing offers faster access. Understanding pricing, eligibility, and what's included in the cost helps you make an informed decision about this medication.
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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 10mg Cost in the UK
Mounjaro 10mg costs vary considerably between NHS and private routes. Private prescriptions for Mounjaro 10mg typically cost between £179–£249 per month, depending on the provider and whether you're purchasing a single pen or multiple pens upfront. Each KwikPen contains four weekly doses, so a monthly supply usually requires one pen. NHS access to tirzepatide is available through specialist tier 3 weight management services following referral from your GP, but availability depends on your region's Integrated Care Board (ICB) funding and capacity. Many NHS services have substantial waiting lists. The cost difference reflects that private providers handle prescribing assessment, dispensing, and ongoing support directly, whilst NHS services coordinate care through the NHS pathway. Your GP can discuss both routes and help you understand eligibility criteria, including BMI thresholds and weight-related health conditions that may qualify you for treatment.
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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.
What Affects Mounjaro Pricing
Several factors influence the final cost you'll pay for Mounjaro 10mg. Provider variation means different private prescribing services charge different rates for the same dose—shopping around can save money. Bulk purchase discounts are sometimes available if you buy multiple pens upfront. Consultation fees may or may not be included in quoted prices—check whether the cost includes the initial online clinical assessment. Additional support such as follow-up consultations, dose adjustment guidance, or nutritional advice may be included or charged separately. Use our free BMI calculator above to check your eligibility first, and our GLP-1 weight loss calculator to estimate potential outcomes. Always confirm the full cost breakdown before purchasing, including whether the price is per pen or per month.
- 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 10mg available on the NHS in the UK?
Yes, Mounjaro (tirzepatide) was approved by NICE for NHS use in specialist weight management services. However, access is through tier 3 specialist services, not standard GP prescription. Regional availability, waiting lists, and eligibility criteria vary significantly across NHS regions. Your GP can refer you to your local service, but waiting times can be several months or longer.
How much does a single Mounjaro KwikPen cost privately?
A single Mounjaro KwikPen (containing four weekly doses of 10mg or any dose) typically costs £179–£249 from UK private prescribing services. Each pen lasts four weeks, so monthly cost is approximately £179–£249. Prices vary between providers, and some offer discounts for bulk purchases or annual plans.
Does the price include the clinical assessment?
It depends on the provider. Some private services include the initial online clinical assessment in their quoted price, whilst others charge consultation fees separately. Always ask whether the stated price is the total cost or whether additional fees apply for the initial assessment, repeat consultations, or dose adjustments.
Is Mounjaro 10mg more expensive than Mounjaro 5mg?
No—Mounjaro pricing is typically the same per pen regardless of dose. Each KwikPen contains four pre-filled doses of the same strength. You don't pay more for the 10mg dose than the 5mg dose; the cost is per pen. However, you'll progress through doses over weeks, so early costs may be lower if you're starting at 2.5mg.
What's included in the private Mounjaro price?
The price usually covers the KwikPen itself and the medication. Check with your provider whether follow-up consultations, dose adjustments, progress tracking, nutritional guidance, or prescription renewals are included or charged extra. Some services offer bundled packages that include ongoing support, others charge per consultation.
Ready to take control of your weight loss journey?
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