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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How Much Does Mounjaro 7.5mg Cost in the UK?
Mounjaro 7.5mg is an intermediate dose of tirzepatide, usually reached after 8–12 weeks of dose escalation. The cost depends entirely on whether you access it through the NHS or private prescription. NHS availability is limited and regional, with most people accessing Mounjaro privately. Private costs typically range from £129 to £320 per month depending on the dose and provider, though individual pricing varies. This guide explains both pathways and what to expect.
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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.
Private Mounjaro 7.5mg Costs and UK Access Routes
In the UK private market, Mounjaro is dispensed by GPhC-registered online pharmacies following a clinical assessment from a UK-licensed prescriber. The 7.5mg dose typically costs between £200–£280 per month depending on the provider, though this can vary. Each KwikPen contains four weekly injections (a four-week supply). Private prescribing does not require an NHS referral, which is why many UK adults choose this route — NHS specialist weight management services often have long waiting lists.
- Private prescriptions issued following an online consultation
- Clinical assessment required before dispensing
- No NHS referral needed
- Multiple providers available with varying costs
- Payment is typically one-off per prescription or subscription-based
You'll need to compare providers for current pricing, as costs fluctuate and promotional offers are common. Always verify that the pharmacy is GPhC-registered before proceeding. Our GLP-1 weight loss calculator can help you estimate potential results at the 7.5mg dose alongside your individual circumstances.
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: How to Access Mounjaro in the UK
NHS route: Mounjaro is available through NHS tier 3 and tier 4 specialist weight management services, but only in some regions and with significant variation in availability. You'll need a GP referral, and waiting times can be many months in some areas. Eligibility requires a BMI of 30 or above (or 27–29.9 with weight-related health conditions). Use our free BMI calculator to check your current status.
Private route: You can access Mounjaro without NHS referral by booking an online consultation with a UK-licensed prescriber. The consultation fee is typically £15–£40, and if approved, your prescription is sent to a dispensing pharmacy. This route is faster but requires you to pay for the medication privately. Both routes require a clinical assessment — your health history, current medications, and weight management goals will be reviewed.
- 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.
Why does Mounjaro 7.5mg cost differ between providers?
Pricing varies because private providers set their own costs for pharmacy services and prescriber time. Some offer subscription discounts, loyalty schemes, or bundle deals. Always compare multiple GPhC-registered pharmacies before purchasing. NHS costs are zero at the point of dispensing if you're eligible and approved.
Can I get Mounjaro on the NHS at the 7.5mg dose?
Yes, if you're referred to an NHS specialist weight management service and approved for treatment. However, NHS availability is very limited and regional. Most patients experience significant waiting times. Your GP can advise whether NHS services are available in your area.
Is the 7.5mg dose the standard dose for weight loss?
The 7.5mg dose is an intermediate dose reached during dose escalation. Treatment typically starts at 2.5mg and increases weekly for 12–20 weeks until reaching your target dose. Maximum dose is 15mg. Your prescriber will determine the appropriate dose based on your individual response and tolerance.
What's included in the £200–£280 monthly cost for Mounjaro 7.5mg?
This covers the Mounjaro KwikPen (four weeks' worth of injections) and dispensing fees. It does not include the initial or follow-up consultations with your prescriber, which may be charged separately. Always ask about the full cost breakdown before committing.
How does Mounjaro 7.5mg compare to Wegovy in terms of cost?
Mounjaro and Wegovy (semaglutide) have similar private pricing in the UK, typically £150–£320 per month depending on dose. Mounjaro is a dual GIP/GLP-1 agonist with different efficacy than Wegovy's single GLP-1 mechanism. Costs vary by provider and dose; your prescriber can discuss which option suits your needs and budget.
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.