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 7.5 mg: Cost and Access in the UK
Mounjaro 7.5 mg is the third escalation dose in the tirzepatide treatment pathway, typically reached after 8–12 weeks of treatment. If you're considering this GLP-1 medication in the UK, you'll need to understand both the cost and how to access it. This guide covers NHS specialist services, private prescription routes, and what to expect during the online consultation process. Whether you're eligible for NHS support or exploring private options, we'll help you understand the real costs and access routes available to UK adults.
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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.
UK Cost of Mounjaro 7.5 mg: NHS and Private Routes
NHS Access: If prescribed through an NHS specialist weight management service (tier 3), Mounjaro is available free at the point of use, though access is limited and waiting lists are substantial in many regions. NICE has approved tirzepatide for use within specialist NHS services for adults with a BMI of 30 or above, or 27 or above with weight-related health conditions.
Private Prescription Cost: Through private online prescribing services, the cost of a Mounjaro KwikPen at 7.5 mg typically ranges from £180–£240 per month, depending on the provider and the dose strength. Each pen contains four weekly injections, so a monthly supply lasts approximately four weeks. Some providers offer tiered pricing or package discounts for longer commitment periods.
- Typical private cost: £45–£60 per weekly injection at 7.5 mg dose
- NHS specialist services: Free if prescribed (but limited availability)
- Costs do not include the GP consultation fee (if required for NHS referral)
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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.
How to Access Mounjaro in the UK: NHS vs Private
NHS Route: Speak to your GP about referral to a tier 3 specialist weight management service. These services conduct detailed health assessments before prescribing and monitor you throughout treatment. Waiting times vary significantly by region (ICB) and can extend several months. Use our BMI calculator to check if you may meet NHS eligibility thresholds before speaking to your GP.
Private Route: Complete an online health questionnaire with a UK-licensed prescriber, who will assess your suitability based on your medical history, current medications, and weight management goals. If approved, a prescription is issued to a GPhC-registered pharmacy. This typically takes 24–48 hours from consultation to dispatch. The online consultation fee is usually included in the treatment cost or charged separately (typically £20–£50). Try our GLP-1 weight loss calculator to estimate potential outcomes at different doses.
- 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 available on the NHS for weight loss?
Yes, NICE has approved tirzepatide (Mounjaro) for use within NHS specialist weight management services. You'll need referral from your GP to a tier 3 service. However, NHS availability varies significantly by region, and waiting lists can be several months to over a year in many areas.
What's the actual cost of Mounjaro 7.5 mg through a private prescription?
Private Mounjaro at 7.5 mg typically costs £180–£240 per month (approximately £45–£60 per weekly injection). Each KwikPen contains four doses. Some providers offer package discounts for longer courses. Always confirm the total cost with your prescriber before starting treatment.
How long does the private online consultation take?
Most private online consultations take 10–20 minutes. You'll complete a detailed health questionnaire covering your medical history, current medications, weight, and health goals. A UK-licensed prescriber reviews this and contacts you with a decision, usually within 24–48 hours. If approved, your prescription goes to a pharmacy for dispensing.
What happens after I get a Mounjaro prescription?
Once your prescription is issued by a UK-licensed prescriber, it's sent electronically to a GPhC-registered pharmacy. The pharmacy prepares your KwikPen and dispatches it, usually within 1–2 working days. You'll receive it by post with instructions. Your prescriber may request check-in calls to monitor your progress and side effects.
Can I switch from NHS to private Mounjaro treatment?
Yes. Some people start on NHS specialist services and later switch to private prescribing for faster access or dose adjustments. Conversely, some access private treatment initially and transition to NHS services later. Inform your prescriber of any other Mounjaro treatment you're receiving to avoid duplication.
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.