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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0.6ml Mounjaro: Cost, Access & How to Get It in the UK
The 0.6ml dose is not a standard Mounjaro dose available in the UK — Mounjaro comes as pre-filled KwikPen injectors starting at 2.5mg. However, understanding Mounjaro's actual costs, how to access tirzepatide through NHS or private routes, and what the dose titration process involves is essential if you're considering this prescription weight management injection. This guide explains UK pricing, eligibility, and how to get started safely with a licensed prescriber.
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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 Cost in the UK: NHS vs Private Routes
Mounjaro is not available on the NHS as a standard prescription through your GP. Access is typically through tier 3 specialist weight management services, which vary significantly by region and availability. Waiting lists can be lengthy — often months to over a year in many ICBs (Integrated Care Boards).
Private prescription costs: Mounjaro through private UK prescribers ranges from approximately £129–£320 per month depending on dose. A single Mounjaro KwikPen (containing 4 weeks of injections) at the starting 2.5mg dose costs around £180–£200 privately. Higher doses (5mg, 10mg, 15mg) cost more. These prices do not include GP consultations if required.
Private access is through GPhC-registered online pharmacies following an online clinical assessment — no NHS referral needed. The dose titration schedule means most people spend 4 weeks at each dose level, gradually escalating, so ongoing costs depend on which dose you stabilise at.
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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 Prescription: What to Expect
NHS route: Ask your GP for a referral to your local tier 3 weight management service if you have a BMI of 30+ or 27+ with weight-related health conditions. Specialist services assess whether Mounjaro (tirzepatide) is appropriate and manage your prescriptions. This is free but involves waiting lists and regional variation.
Private online route: Complete an online consultation with a UK-licensed prescriber via a registered pharmacy. You'll answer health questions; if approved, a prescription is issued and medication dispensed. The first consultation typically costs £50–£100; repeat consultations (usually every 4–8 weeks) cost £30–£50. This is faster but not free.
Both routes require clinical assessment — Mounjaro is prescription-only. Use our free GLP-1 weight loss calculator to explore potential outcomes, and our BMI calculator to check your starting point before speaking to 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.
Is Mounjaro available free on the NHS in the UK?
Mounjaro is not routinely available as a standard GP prescription. Access is typically through NHS tier 3 specialist weight management services, which vary by region. Availability is limited and waiting lists are often very long. Private prescription is faster but costs £129–£320 per month depending on dose.
What does 0.6ml Mounjaro cost in the UK privately?
0.6ml is not a standard Mounjaro dose. Mounjaro comes as pre-filled KwikPens starting at 2.5mg. A single pen costs approximately £180–£200 privately. Costs increase at higher doses (5mg, 10mg, 15mg). Online consultations add £30–£100 per visit depending on whether it's initial or repeat assessment.
How long does the Mounjaro dose titration take?
Dose titration is the gradual escalation process. You spend a minimum of 4 weeks at each dose level before increasing: 2.5mg (weeks 1–4), 5mg (weeks 5–8), 7.5mg (weeks 9–12), 10mg, 12.5mg, and up to 15mg maximum. Full titration typically takes 5–6 months, though you can pause or stop at any dose.
What's the difference between accessing Mounjaro on the NHS vs privately?
NHS access is free but involves GP referral, specialist assessment, and potentially long waiting lists. Private access is faster (days to weeks) and doesn't require NHS referral, but costs £150–£300 per month plus consultation fees. Both require a prescription and clinical assessment confirming eligibility.
Can I switch from NHS to private Mounjaro prescriptions?
Yes, you can move between NHS and private routes. If NHS waiting lists are long, many people access treatment privately while waiting. Inform your prescriber of any previous doses. Ensure continuity by having your blood pressure and kidney function checked before starting, as these are part of the clinical assessment process.
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.