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 10 Mg Cost in the UK: NHS and Private Options
The 10 mg dose is a common escalation step in Mounjaro treatment, but cost varies significantly depending on whether you're accessing tirzepatide through the NHS or private route. On the NHS, there is no direct cost to patients, but access is limited to specialist tier 3 weight management services and availability varies by region. Through private online prescribing, Mounjaro typically costs between £160 and £200 per month at the 10 mg dose, depending on your provider. This guide explains NHS eligibility, NICE guidance, and how costs compare between routes so you can understand your options.
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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.
NHS Access and Costs for Mounjaro 10 Mg
On the NHS, Mounjaro is free at the point of use — you pay nothing for the medication itself if prescribed through a specialist weight management service. However, NHS access is tightly controlled: NICE (National Institute for Health and Care Excellence) has approved tirzepatide for use within specialist tier 3 weight management services only, not through standard GP prescription.
To access Mounjaro via NHS:
- Your GP must refer you to a tier 3 specialist weight management service
- You must meet NICE eligibility: BMI ≥30, or BMI 27–29.9 with weight-related health conditions
- The specialist service assesses suitability and prescribes the drug
- You then receive the injection (either at clinic or self-administered at home)
The 10 mg dose is typically reached after 12–16 weeks of dose escalation (starting at 2.5 mg and increasing every 4 weeks). Availability varies significantly by region and ICB (Integrated Care Board) — some areas have long waiting lists, others have limited services. Contacting your GP is the first step to check what's available locally.
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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.
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Everything you need to understand your weight, explore medication options, and track your progress — completely free.
Private Mounjaro 10 Mg Costs and the NHS Waiting List Alternative
For patients not accessing the NHS route — or facing waiting lists — private online prescribing offers faster access. At 10 mg, private Mounjaro typically costs £160–£200 per month, depending on the provider and whether you're stepping up from a lower dose you've already purchased. Costs may be slightly higher if you're starting treatment privately (as you need the full dose titration sequence: 2.5 mg → 5 mg → 7.5 mg → 10 mg).
Private route benefits: No NHS referral needed, faster access (days to weeks vs months), no waiting lists. Private route consideration: You pay fully out of pocket. Use our GLP-1 weight loss calculator to estimate potential results at 10 mg, and discuss with a prescriber whether this dose is appropriate for you based on your starting weight and health profile.
- 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 10 mg cost on the NHS?
Mounjaro is completely free on the NHS if prescribed through a specialist tier 3 weight management service — you pay nothing. However, access requires an NHS referral and meeting NICE eligibility criteria. Availability varies by region, and waiting lists can be several months in some areas.
What is the average private cost of Mounjaro 10 mg in the UK?
Private Mounjaro at 10 mg typically costs between £160 and £200 per month in the UK. Costs depend on your provider and whether you're continuing from a lower dose or starting treatment. This is in addition to the cost of the initial titration sequence if you're new to the medication.
How long does it take to reach the 10 mg dose on Mounjaro?
The 10 mg dose is typically reached after 12–16 weeks of treatment. Mounjaro escalates every 4 weeks: 2.5 mg (weeks 1–4), 5 mg (weeks 5–8), 7.5 mg (weeks 9–12), then 10 mg (weeks 13+). Your prescriber may adjust this timeline based on your response and tolerance.
Can I get Mounjaro 10 mg prescribed through my GP directly on the NHS?
No — Mounjaro is only prescribed through specialist tier 3 weight management services on the NHS, not standard GP prescription. Your GP can refer you to the service, but the specialist team makes the prescribing decision after clinical assessment of your eligibility and suitability.
Is Mounjaro 10 mg more or less expensive than Wegovy on the NHS?
Both Mounjaro and Wegovy are free on the NHS if prescribed through specialist services. Private costs are similar: Mounjaro 10 mg is approximately £160–£200 per month, while Wegovy at equivalent dosage is roughly comparable. Your prescriber will determine which is appropriate for you based on individual health factors.
Ready to take control of your weight loss journey?
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