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 Bundle Price in the UK
Mounjaro (tirzepatide) bundles vary in price across UK private providers, typically ranging from £129 to £320+ per month depending on your dose. Each KwikPen contains four weekly injections. Bundle pricing usually reflects the specific dose you're prescribed following a clinical assessment. This guide explains current UK Mounjaro costs, what affects pricing, and how to access this prescription-only weight management medication safely through NHS or private routes.
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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.
Understanding Mounjaro Bundle Costs in the UK
Mounjaro pricing in the UK varies significantly based on several factors:
- Dose strength: Lower doses (2.5mg, 5mg) typically cost less than higher doses (10mg, 15mg)
- Provider variation: Different GPhC-registered online pharmacies set their own prices
- Subscription vs. one-off: Some providers offer monthly subscriptions with slight discounts versus single-purchase pricing
- Clinical assessment fees: Initial consultation costs (usually £20–£40) may be separate or bundled
A typical tirzepatide bundle at maintenance dose (10mg–15mg) costs between £180–£320 per month. Starting doses (2.5mg–5mg) may be £129–£180. Always confirm the exact price with your chosen provider before committing, as costs change and vary between services.
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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.
How Mounjaro Access Affects Bundle Pricing
NHS access to Mounjaro is free if prescribed through a specialist tier 3 or tier 4 weight management service, but waiting lists vary significantly by region and can extend months to years. Private access through GPhC-registered online pharmacies is faster but requires payment of the full bundle price per month. Your choice depends on your circumstances — NHS eligibility requires a BMI of 30+ (or 27+ with weight-related health conditions) and typically needs GP referral to specialist services. Private prescribing requires an online clinical assessment with a UK-licensed prescriber. Use our GLP-1 weight loss calculator to estimate potential results and explore your options with your GP or 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.
What's included in a Mounjaro bundle?
Each Mounjaro bundle contains one KwikPen with four pre-filled doses of tirzepatide at your prescribed strength (2.5mg, 5mg, 7.5mg, 10mg, 12.5mg, or 15mg). One KwikPen covers four weeks of once-weekly injections. Bundles may also include injection guidance, storage information, and access to patient support services depending on the provider.
Why does Mounjaro cost more than Wegovy?
Mounjaro (tirzepatide) is a dual GIP and GLP-1 receptor agonist, whilst Wegovy (semaglutide) is a single GLP-1 agonist. Tirzepatide is a newer medication, and manufacturing/licensing costs may be reflected in pricing. Clinical trials show tirzepatide produces slightly higher average weight loss than semaglutide, which may also influence cost. Always compare prices across providers rather than assuming one is cheaper.
Can I get Mounjaro cheaper on the NHS?
Yes — if prescribed through NHS specialist weight management services, Mounjaro is completely free. However, NHS availability varies dramatically by region and waiting times can be substantial. Your GP can refer you to your local tier 3 service. Private prescribing through accredited online pharmacies is faster but requires payment of the full bundle cost monthly.
Are there hidden costs with private Mounjaro bundles?
Most reputable GPhC-registered pharmacies clearly display the bundle price including the medication. However, check whether clinical assessment fees (typically £20–£40 for initial consultation) are additional. Some providers offer follow-up support included; others charge separately. Always review the full terms before purchasing.
How do I know which dose bundle to buy?
Your prescribed dose is determined by your prescriber following a clinical assessment of your health, BMI, and other factors. Starting dose is typically 2.5mg, increasing weekly until you reach your maintenance dose (usually 5mg–15mg). Never self-prescribe or jump doses. Your prescriber will confirm your dose, and you'll purchase the appropriate bundle from your chosen provider.
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.