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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What Does Mounjaro 10 mg Cost in the UK?
Mounjaro (tirzepatide) 10 mg is a prescription-only weight management injection available in the UK through two main routes: NHS specialist services and private online prescriptions. Costs vary significantly depending on which route you choose. The 10 mg dose is typically an escalation dose reached after several weeks of lower doses, with individual prescribing depending on your response and tolerance. Understanding both access routes and realistic pricing helps you plan your weight management journey effectively.
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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.
Private Mounjaro 10 mg Pricing in the UK
Private prescriptions for Mounjaro 10 mg through UK online clinics typically cost between £190 and £320 per month, depending on the provider and whether additional consultations are included. The cost usually covers the KwikPen (which contains 4 weekly doses), an initial online consultation with a UK-licensed prescriber, and ongoing clinical support. Since Mounjaro requires dose titration over several weeks, you'll likely pay for lower doses first—2.5 mg, then 5 mg, then 7.5 mg—before reaching the 10 mg maintenance dose. Many providers offer subscription models where you pay monthly for ongoing supply and support, or one-off prescription options if you prefer flexibility. Costs may vary slightly based on consultation complexity, follow-up appointments, and whether blood pressure or other health monitoring is required. Always check whether your chosen provider includes repeat consultations in their pricing, as some charge separately for ongoing clinical review.
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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 Prescriptions
NHS route: Mounjaro is available on the NHS through tier 3 specialist weight management services, typically free at the point of use. However, access requires referral from your GP and specialist assessment, with waiting lists varying from months to years depending on your region. Your GP will need to refer you, and local integrated care boards (ICBs) vary in commissioning availability.
Private route: Online consultations with UK-licensed prescribers are faster—often within days. You'll complete a health questionnaire, have a video or telephone consultation, and receive a prescription if clinically appropriate. This bypasses NHS waiting lists but requires upfront payment. Private prescriptions are issued under the prescriber's assessment of your eligibility based on BMI and health conditions.
- 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 a single Mounjaro 10 mg KwikPen cost privately in the UK?
A single Mounjaro KwikPen (containing 4 weekly doses) at the 10 mg dose typically costs £190–£320 when prescribed privately, though prices vary by provider. This usually includes the pen, initial consultation, and basic clinical support. Always ask providers upfront for exact pricing and what's included before committing.
Is Mounjaro available free on the NHS in the UK?
Yes, Mounjaro is available on the NHS through specialist tier 3 weight management services following GP referral. However, access depends on local commissioning and availability, with waiting lists that can be lengthy. Your GP can check whether your local integrated care board (ICB) funds tirzepatide and refer you if appropriate.
How long does it take to reach the 10 mg dose of Mounjaro?
The 10 mg dose is reached after approximately 12–16 weeks of dose titration, starting from 2.5 mg and increasing by 2.5 mg every 4 weeks. This gradual escalation allows your body to adjust and helps manage side effects. Your prescriber will guide your individual titration schedule based on tolerability.
What's included in the cost when I get Mounjaro privately?
Private Mounjaro costs typically include the KwikPen itself, an initial online consultation with a prescriber, and some level of clinical follow-up support. Check your provider's terms—some include follow-up appointments and blood pressure checks, while others charge separately. Repeat KwikPen costs may also vary if you continue treatment.
Can I use my private Mounjaro prescription at any UK pharmacy?
Yes, once you have a private prescription from a UK-licensed prescriber, it can be dispensed by any GPhC-registered pharmacy. Many private weight loss providers have partner pharmacies, but you can also take your prescription to any legitimate UK pharmacy. Always verify the pharmacy is GPhC-registered to ensure safety and legitimacy.
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.