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 7.5mg Price in the UK — What You Need to Know
Mounjaro 7.5mg is a mid-range dose in the tirzepatide titration schedule, typically reached after 12 weeks of treatment. Pricing for Mounjaro varies significantly depending on whether you access it through NHS specialist weight management services or via private prescription through a GPhC-registered online pharmacy. This guide explains the costs involved, how dosing works, and how Mounjaro 7.5mg compares to Wegovy in terms of both price and mechanism. Always consult your GP or a licensed prescriber about what's suitable for your individual circumstances.
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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 7.5mg Pricing & Dose Progression
Private prescription pricing for Mounjaro typically ranges from £129 to £320 per month depending on dose and provider, though individual prices vary. At the 7.5mg dose, you'll usually pay towards the mid-to-upper end of that range. Each Mounjaro KwikPen contains four weekly injections, so a monthly supply (one pen) lasts exactly four weeks.
The 7.5mg dose is reached after a structured titration schedule: you start at 2.5mg for weeks 1–4, increase to 5mg for weeks 5–8, then move to 7.5mg from week 9 onwards. This gradual escalation helps your body adjust and allows your prescriber to monitor side effects and efficacy.
- NHS access: Available through tier 3 specialist weight management services if eligible; costs covered by the NHS but involves waiting lists and regional variation
- Private access: Online consultation with a UK-licensed prescriber; faster access but out-of-pocket cost
- Dose titration: Each dose requires a minimum 4 weeks before increasing — you cannot jump directly to 7.5mg
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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.
Mounjaro 7.5mg vs Wegovy — Mechanism, Efficacy & Suitability
Mounjaro (tirzepatide) and Wegovy (semaglutide) are both GLP-1 receptor agonist medications, but Mounjaro is a dual GIP + GLP-1 agonist — it activates two hormone pathways rather than one. Clinical trial data shows Mounjaro users lost an average of approximately 19.5% body weight at the 10mg dose in the SURMOUNT-1 trial, whilst Wegovy users lost around 14.9% in the STEP-1 trial, though individual results vary significantly.
Whether 7.5mg Mounjaro or an equivalent Wegovy dose is more suitable for you depends on your medical history, risk tolerance for side effects, and prescriber recommendation following clinical assessment. There is no "better" option — both are prescription-only and require personalised evaluation. Our GLP-1 weight loss calculator can help you explore potential outcomes at different doses.
[END OF COL_J ABOVE — DO NOT REPEAT]- 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.
How much does Mounjaro 7.5mg cost on private prescription in the UK?
Private Mounjaro costs typically range from £129 to £320 per month depending on dose and pharmacy provider. At 7.5mg, you'll usually be at the mid-to-upper end of this range. Prices vary between online providers, so shopping around is worthwhile. NHS costs are covered if prescribed through a specialist tier 3 weight management service, though waiting times vary by region.
Why is Mounjaro 7.5mg not the starting dose?
Mounjaro requires dose titration for safety and tolerability. You start at 2.5mg, increase to 5mg after 4 weeks, then 7.5mg after another 4 weeks. This gradual escalation allows your body to adjust to the medication and helps your prescriber monitor for side effects like nausea or stomach upset, which typically improve over time.
Is Mounjaro 7.5mg better than Wegovy for weight loss?
Clinical trials suggest Mounjaro may produce slightly greater average weight loss than Wegovy, but individual results vary significantly. The difference between them is their mechanism: Mounjaro activates GIP + GLP-1 pathways (dual), whilst Wegovy activates GLP-1 only. Your prescriber will recommend the most suitable option based on your health profile.
Can I get Mounjaro 7.5mg on the NHS?
Mounjaro is available on the NHS through tier 3 specialist weight management services if you meet eligibility criteria (BMI ≥30, or ≥27 with weight-related health conditions). Access and waiting times vary significantly by region and local commissioning. Ask your GP about referral to your local specialist service.
What's the difference between Mounjaro and tirzepatide?
Mounjaro is the brand name for the medication tirzepatide. They are the same drug — Mounjaro is simply how it's marketed in the UK by Eli Lilly. When prescribed on the NHS or via private prescribers, you may see either name used, but they refer to identical medication at the same doses.
Ready to take control of your weight loss journey?
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