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
Free tracker included with every download this week
How Much Does Mounjaro 7.5mg Cost in the UK?
Mounjaro (tirzepatide) 7.5mg pricing in the UK varies significantly between NHS and private routes. On the NHS, Mounjaro is available through specialist tier 3 weight management services, though access and availability differ by region and waiting lists can be lengthy. Private prescription costs typically range from £180–£250 per KwikPen (four weekly doses) depending on the dose and online pharmacy, meaning the 7.5mg dose is generally more affordable than higher doses. The cost depends on where you obtain your prescription and whether you're accessing treatment through the NHS or privately.
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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 7.5mg Pricing: NHS vs Private Routes
NHS access: Mounjaro is approved by NICE for use within NHS specialist weight management services. However, NHS availability varies dramatically across ICBs (Integrated Care Boards), and many areas have waiting lists of 6–18 months or longer. When available through the NHS, there is no direct patient cost for the medication itself, though the GP referral and specialist assessment process must be completed first.
Private prescription: Through GPhC-registered online pharmacies, Mounjaro 7.5mg typically costs £180–£250 per KwikPen. This is the escalation dose after starting at 2.5mg and progressing through 5mg — it sits below the maximum 15mg dose. Private prescriptions are issued by UK-licensed prescribers following an online clinical assessment (usually £30–£50). The 7.5mg dose represents good value if you require dose escalation but haven't reached maximum strength. Costs may be lower at some providers, so comparing UK pharmacies is recommended.
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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.
What's the Best Way to Find Affordable Mounjaro 7.5mg?
If pursuing private treatment, check multiple GPhC-registered online pharmacies — pricing and availability can vary. Some pharmacies offer loyalty discounts or reductions for ongoing prescriptions. If you've been prescribed Mounjaro privately at a lower dose and need to escalate to 7.5mg, ask your prescriber or pharmacy about any cost reductions. For NHS access, contact your GP about referral to your local specialist weight management service — waiting lists exist, but the service is free once you're accepted. Compare your BMI and weight-related health conditions against NHS eligibility criteria to understand whether you might qualify. Using our free GLP-1 weight loss calculator can help you project potential outcomes at this dose alongside lifestyle changes.
- 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 7.5mg cheaper than buying at higher doses?
Yes, typically. 7.5mg KwikPens usually cost less per pen than 10mg, 12.5mg, or 15mg doses from private pharmacies, usually £180–£250. However, you still require four doses per month, so calculate your monthly budget accordingly. Individual pricing varies by pharmacy.
Can I get Mounjaro 7.5mg on the NHS without paying?
Yes, if you're accepted into an NHS specialist tier 3 weight management service following GP referral and meet NICE eligibility criteria. There's no medication cost, but waiting times can be very long (months to years depending on your region). Check your local ICB's policies.
Why does Mounjaro 7.5mg cost more than Wegovy?
Mounjaro (tirzepatide) is a dual GIP/GLP-1 agonist, which is a newer mechanism than Wegovy's single GLP-1 approach. Manufacturing, development costs, and market positioning contribute to pricing. Clinical trials show Mounjaro may achieve greater average weight loss, which some argue justifies the cost difference.
What if I can't afford Mounjaro 7.5mg privately?
Explore NHS access through your GP — it's free if you qualify and are accepted into specialist services. Some online pharmacies offer payment plans or loyalty discounts. You could also ask your prescriber about starting at lower doses (2.5mg or 5mg) to reduce upfront costs, then escalating later.
Are there cheaper alternatives to Mounjaro 7.5mg?
Wegovy (semaglutide) may cost less — typically £129–£200 per month depending on dose — though it works via a single GLP-1 mechanism rather than Mounjaro's dual action. Saxenda (liraglutide) is a daily injection that may also be more affordable. Discuss options with a prescriber to find what suits your budget and health needs.
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.