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 Deals in the UK
"Bundle deals" for Mounjaro typically refer to multi-month medication packages offered through private UK prescribing services. Unlike NHS prescriptions, which are dispensed individually, private providers sometimes offer upfront cost reductions for purchasing multiple KwikPens in advance. This guide explains how Mounjaro is accessed in the UK, the difference between NHS and private routes, and what bundle pricing really means for your weight management treatment.
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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 Access and Pricing in the UK
Mounjaro (tirzepatide) is a prescription-only GIP and GLP-1 receptor agonist injection licensed in the UK for weight management. Access routes differ significantly:
- NHS route: Prescribed through tier 3 specialist weight management services after GP referral. Free at point of care but access varies by region and involves waiting lists in most areas.
- Private route: Available through GPhC-registered online prescribing services following an online clinical assessment. Costs range from approximately £129–£320 per month depending on dose. Private providers may offer discounts for purchasing multiple pens upfront.
- What "bundle deals" mean: Private pharmacies occasionally offer reduced per-unit costs when ordering 2–3 months of Mounjaro KwikPens together, rather than purchasing one pen at a time. This is not a clinical bundle — it is a pricing discount.
- MHRA status: Mounjaro carries additional monitoring (Black Triangle ▼) and is subject to ongoing safety review.
Neither NHS nor private routes assures faster or superior results — individual weight loss varies based on dose, adherence, diet, and activity level. Use our free GLP-1 weight loss calculator to estimate potential outcomes at different doses.
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.
NHS vs Private Mounjaro: Which Route is Right for You?
NHS access is entirely free but involves referral through your GP to a specialist tier 3 weight management service. Eligibility requires a BMI of 30 kg/m² or above (or 27–29.9 kg/m² with weight-related health conditions such as type 2 diabetes, high blood pressure, or cardiovascular disease). Waiting times can exceed 6–12 months in many areas. Private access is faster — available within days following an online assessment — but involves out-of-pocket costs. There is no "bundle deal" advantage in clinical terms; buying 3 months upfront rather than 1 month simply spreads the cost differently. Both routes require a prescription from a UK-licensed prescriber and both require you to follow a reduced-calorie diet and increase physical activity for best results. Check your BMI using our free BMI calculator to confirm eligibility before pursuing either route.
- 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 is a bundle deal for Mounjaro in the UK?
A bundle deal typically refers to a discounted rate offered by private prescribing pharmacies when you purchase multiple Mounjaro KwikPens (usually 2–3 months' supply) upfront, rather than one pen monthly. This is a pricing structure, not a clinical benefit. NHS prescriptions are dispensed individually free of charge.
Can I get Mounjaro on the NHS with a bundle discount?
No. NHS prescriptions are dispensed one at a time and are free at the point of care. Bundle pricing is a private sector pricing model only. NHS access requires referral to a tier 3 specialist weight management service through your GP.
How much does Mounjaro cost privately in the UK?
Private Mounjaro costs typically range from £129–£320 per month depending on your dose (2.5 mg to 15 mg). Purchasing 3 months upfront may reduce the per-unit cost by 5–15% depending on the provider, but there is no clinical difference in outcomes.
How do I know if I am eligible for Mounjaro on the NHS?
You are typically eligible for NHS Mounjaro if you have a BMI of 30 kg/m² or above, or 27–29.9 kg/m² with at least one weight-related health condition (such as type 2 diabetes, hypertension, or cardiovascular disease). Ask your GP about referral to your local tier 3 weight management service. For personalised guidance, use our free BMI calculator above.
Is Mounjaro better than Wegovy for UK weight management?
Both Mounjaro (tirzepatide) and Wegovy (semaglutide) are prescription-only weight management injections available in the UK. Mounjaro uses a dual GIP+GLP-1 mechanism and Wegovy uses GLP-1 alone. Clinical trial data suggests Mounjaro may produce slightly higher average weight loss, but individual results vary significantly. Your prescriber will assess which is more suitable for you. Compare eligibility and costs using our GLP-1 weight loss calculator.
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.