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 Price Checker — Understanding UK Costs
Mounjaro (tirzepatide) prices in the UK vary significantly depending on whether you access it through the NHS or a private prescriber. There is no single "price checker" tool because costs depend on your prescription dose, the provider, and your clinical eligibility. This guide explains what Mounjaro typically costs in the UK, how NHS access works, and what factors affect the final price you'll pay for this once-weekly injection.
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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.
Mounjaro UK Pricing — What You'll Actually Pay
NHS access: If prescribed through an NHS specialist weight management service, Mounjaro is typically free (covered by your NHS prescription charge, currently £9.90 per item in England, or free in Scotland, Wales, and Northern Ireland if eligible). However, NHS access is limited — NICE has approved tirzepatide for specialist services, but availability varies significantly by region and waiting lists can extend many months.
Private prescribing: Through private online prescribing services following a clinical assessment, Mounjaro costs approximately £129–£320 per month depending on your dose. The starting dose (2.5 mg) is typically cheaper than the maximum dose (15 mg). A single KwikPen contains 4 weekly injections, so monthly costs reflect a 4-week supply. Prices may vary between providers and include the consultation fee.
- 2.5 mg (starting dose): typically £129–£180
- 5–7.5 mg: typically £180–£240
- 10–15 mg (higher doses): typically £240–£320
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.
Factors That Affect Your Mounjaro Cost
Several factors influence the final price you pay. Dose escalation: As you progress through the standard 4-week titration schedule (increasing from 2.5 mg up to your maintenance dose), your monthly cost may increase. Provider variation: Different GPhC-registered pharmacies set their own pricing, so shopping around may save money. Combination costs: Some providers bundle consultations with the prescription; others charge separately. NHS vs private eligibility: Your BMI, weight-related health conditions, and regional ICB (Integrated Care Board) policies determine NHS access. Use our free GLP-1 weight loss calculator to estimate potential outcomes at different doses, which may help inform your cost-benefit decision.
- 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 there an official Mounjaro price checker in the UK?
No single official tool exists because Mounjaro prices vary by provider, dose, and access route (NHS vs private). NHS prices are fixed (prescription charge), but private costs differ between pharmacies. Always request a quote from your chosen prescriber before committing.
Why is private Mounjaro more expensive than NHS?
NHS Mounjaro is subsidised by the NHS (you pay only the standard prescription charge). Private prescribing includes the cost of the medication, clinical assessment, and provider margins. Private access is faster but costs more.
Can I use a price comparison site for Mounjaro?
Most Mounjaro pricing requires a clinical assessment first — you cannot simply compare prices without an initial consultation. Contact GPhC-registered pharmacies directly for quote requests after assessment.
Does my Mounjaro cost change as I titrate doses?
Yes, typically. As you increase from 2.5 mg to your maintenance dose, your monthly cost usually increases. Clarify the total titration cost with your provider upfront, as some offer package pricing for the full escalation course.
What's the difference between Mounjaro and Wegovy pricing in the UK?
Mounjaro (tirzepatide) and Wegovy (semaglutide) are different medications with different pricing. Mounjaro typically costs £129–£320/month; Wegovy pricing may differ. Your prescriber will advise which is suitable and their associated costs based on your clinical assessment.
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.