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
Mounjaro 7.5 mg Price in the UK — What You Need to Know
The cost of Mounjaro 7.5 mg in the UK varies significantly depending on whether you access it through the NHS or privately. On the private market, Mounjaro typically costs between £129 and £320 per month depending on your dose and the provider. This is the dose many people reach during their titration schedule after starting at 2.5 mg and gradually increasing each month. The NHS also covers tirzepatide through specialist weight management services in some regions, though access and waiting times vary considerably across the country. Understanding your options—NHS versus private prescription—is essential before starting 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.
Private Prescription Costs and Market Pricing
Private tirzepatide pricing in the UK depends on your dose level and the pharmacy provider. At the 7.5 mg dose—typically reached in week 13 of titration—monthly costs generally range from £180 to £280 per month through GPhC-registered online pharmacies. Each KwikPen contains four weekly doses, so you'll need one pen per month. Several factors affect the exact price: the specific provider, whether you're a returning or new patient, and any consultation fees. A typical private prescription process involves an online clinical assessment with a UK-licensed prescriber (usually £20–£50), followed by a prescription issued to a GPhC-registered pharmacy for dispensing. Many providers offer bundle pricing if you commit to multiple months, which can reduce the per-month cost. It's important to note that private treatment costs accumulate—at 7.5 mg, you're looking at approximately £2,160–£3,360 annually for medication alone, excluding initial consultations.
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 Access vs Private Routes
Accessing Mounjaro through the NHS involves referral to a tier 3 or tier 4 specialist weight management service—you cannot request it directly from your GP for routine prescribing. Your GP can refer you if you meet NICE criteria: a BMI of 30 or above, or 27–29.9 with weight-related health conditions such as type 2 diabetes or high blood pressure. NHS provision is free once approved, but waiting times vary dramatically by region—some areas have waiting lists of 6 months to 2 years. Many people choose the private route to avoid delays. Private online consultations are typically faster (often same-week assessment), and treatment can begin within days if clinically appropriate. Use our free GLP-1 weight loss calculator to estimate potential outcomes at 7.5 mg, and our BMI calculator to check your current eligibility status.
- 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 7.5 mg available on the NHS in the UK?
Yes, Mounjaro (tirzepatide) is available through NHS specialist weight management services in most regions, but access requires referral from your GP and meeting NICE eligibility criteria. Waiting times vary considerably by location—some areas have waiting lists of many months. Check with your local Integrated Care Board (ICB) for availability in your region.
How much does Mounjaro 7.5 mg cost privately each month?
Private Mounjaro costs typically range from £180 to £280 per month at the 7.5 mg dose through UK online pharmacies. This excludes any initial consultation fees (usually £20–£50). Exact pricing varies by provider, and some offer discounts for multi-month packages.
What's included in the private prescription cost?
The private cost covers the KwikPen device (containing four weekly injections) and dispensing fees. It does NOT include the initial online consultation with a prescriber, which is typically £20–£50 extra. Some providers bundle consultation and first month together at a single price.
Can I switch from private to NHS Mounjaro treatment?
Potentially, yes—if you're already stable on private tirzepatide, your GP may be able to support a request for NHS continuation, though this depends on local NHS policy and NICE guidance. Contact your local specialist weight management service to discuss options.
How do I know if I'm eligible for Mounjaro on the NHS?
You're eligible if you have a BMI of 30 or above, or BMI 27–29.9 with at least one weight-related health condition (type 2 diabetes, high blood pressure, heart disease, etc.). Use our free BMI calculator to check your current BMI, then discuss eligibility with your GP.
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.