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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What's the Cheapest Price for 7.5mg Mounjaro in the UK?
The cost of 7.5mg Mounjaro in the UK varies significantly depending on whether you access it through the NHS or private prescribing services. On the NHS, Mounjaro is available free at the point of use if prescribed through a specialist tier 3 weight management service, though availability and waiting times vary by region. Privately, 7.5mg Mounjaro typically costs between £150–£200 per KwikPen (four-week supply) through GPhC-registered online pharmacies, depending on the provider and any available discounts. The actual price you pay depends on your access route, regional NHS provision, and which private service you choose. Always ensure any prescriber is UK-licensed and any pharmacy is GPhC-registered.
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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.
NHS vs Private Access for Mounjaro 7.5mg
NHS access: Mounjaro is available on the NHS through specialist tier 3 weight management services for eligible adults. Once prescribed, there is no cost at the point of dispensing. However, NHS access requires a GP referral and assessment by a specialist service — waiting lists can be substantial in many regions, sometimes stretching months or longer. NICE approved tirzepatide for use within NHS services, but availability remains inconsistent across ICBs (integrated care boards).
Private access: GPhC-registered online pharmacies offer 7.5mg Mounjaro following a remote clinical assessment with a UK-licensed prescriber. Private costs typically range from £150–£200 per KwikPen, though prices may vary. Private access does not require NHS referral or waiting lists. Some providers offer subscription discounts or loyalty programmes that reduce the per-pen cost over time. Always verify the pharmacy's GPhC registration before ordering.
Both routes require a prescription from a qualified UK-licensed prescriber following a clinical assessment. No legitimate supplier will dispense Mounjaro without this requirement.
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.
Understanding Mounjaro Dosing and Cost Factors
The 7.5mg dose is typically used during the dose titration phase — most patients start at 2.5mg and increase by 2.5mg every four weeks until reaching their target dose (often 10mg or 15mg for maintenance). Cost-effectiveness depends on how long you remain at 7.5mg. If you progress to a higher maintenance dose, your long-term costs will reflect that higher dose, not the initial 7.5mg price. Use our free GLP-1 weight loss calculator to project potential outcomes at different doses, which can help inform discussions with your prescriber about your treatment timeline.
When comparing costs between providers, check whether prices include delivery, whether repeat prescriptions qualify for discounts, and what happens if you need to pause or adjust treatment. Some providers offer initial consultation fees separately from medication costs.
- 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 7.5mg Mounjaro available on the NHS in the UK?
Yes, Mounjaro (tirzepatide) is available on the NHS through specialist tier 3 weight management services for eligible adults. It is free at the point of use if prescribed through these services. However, access requires a GP referral, clinical assessment, and varies significantly by region. Waiting times can be lengthy, sometimes several months or longer.
What's the typical private cost of 7.5mg Mounjaro in the UK?
Private 7.5mg Mounjaro typically costs between £150–£200 per KwikPen (four-week supply) through GPhC-registered online pharmacies. Prices vary by provider and may include subscription discounts. Some services offer loyalty programmes that reduce per-pen costs over time for regular customers.
Why is 7.5mg Mounjaro not a final dose for most people?
7.5mg is part of the dose titration schedule. Most patients start at 2.5mg and increase every four weeks. The 7.5mg dose is typically a stepping stone toward the target maintenance dose (often 10mg or 15mg), which is why costs may increase as treatment progresses.
How do I know if a pharmacy selling Mounjaro is legitimate?
Check that the pharmacy is GPhC-registered (you can verify this on the GPhC website). Legitimate services require an online clinical assessment with a UK-licensed prescriber before issuing a prescription. Never buy Mounjaro without a prescription or from unregistered sources.
Is there a difference between Mounjaro and other tirzepatide products in terms of cost?
Mounjaro is the brand name for tirzepatide approved in the UK. All tirzepatide supplied in the UK should be the same pharmaceutical product. Cost differences reflect provider pricing, delivery fees, and subscription discounts rather than product differences. ```
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.