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
How Much Does Mounjaro 7.5mg Cost in the UK?
Mounjaro (tirzepatide) at the 7.5mg dose is available in the UK through both NHS specialist services and private online prescription routes, though costs and access pathways differ significantly. The 7.5mg dose is typically used during the dose titration phase as your body adjusts to the medication, usually weeks 9–12 of treatment. Understanding your options, costs, and the clinical assessment process will help you make an informed decision about whether this weight loss injection is right for you.
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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.
UK Private Cost & Access for Mounjaro at 7.5mg
In the private sector, Mounjaro at 7.5mg typically costs between £129 and £200 per dose depending on the prescription provider and any package pricing available. Since Mounjaro is administered as a once-weekly injection via KwikPen, a single dose represents one week of treatment. Monthly costs (4 weeks) for the 7.5mg dose generally range from £516 to £800 for private prescriptions.
Private access does not require NHS referral — you can book an online consultation with a UK-licensed prescriber, who will assess your eligibility based on your BMI, weight-related health conditions, and medical history. If approved, the prescription is issued and dispensed by a GPhC-registered pharmacy. The entire process typically takes 3–7 working days from consultation to first dose delivery. Our GLP-1 weight loss calculator can help you estimate potential outcomes at this dose to inform your decision.
- No NHS waiting list — access within days
- Prescription issued following clinical assessment
- Home delivery of medication
- Flexible management and dose adjustments through your prescriber
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 Routes & What to Expect
NHS Route: Mounjaro is approved by NICE for use within NHS specialist tier 3/4 weight management services. However, NHS access is limited by regional availability and funding. You'll need a referral from your GP to a specialist weight management service — waiting lists can be several months to over a year depending on your area. Once accepted, the NHS typically covers the full cost, but availability of the specific dose you need depends on local protocols.
Private Route: During your online consultation, the prescriber will review your weight, BMI, health conditions, and current medications. You'll complete a medical questionnaire. If approved, your prescription is sent directly to a pharmacy. Most people receive their first KwikPen within 5–7 working days. Use our BMI calculator to check your eligibility (BMI 30+, or BMI 27+ with weight-related conditions) before booking your consultation.
- 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.
Can I switch from NHS to private Mounjaro if the NHS waiting list is too long?
Yes. You can pursue private access whilst on an NHS waiting list. However, always inform your GP and the NHS specialist service if you obtain private prescriptions, as they may need to monitor your progress. Switching between routes should be managed carefully to avoid gaps or overlaps in your treatment.
What does the 7.5mg dose cost compared to other Mounjaro doses in the UK?
The cost per dose is similar across all Mounjaro strengths (2.5mg to 15mg) in the private sector — typically £129–£200 per injection, since you're paying for the prescription service and delivery, not the dose strength. However, some providers offer tiered pricing if you commit to a longer treatment package, so comparing several providers is worthwhile.
Is Mounjaro 7.5mg always the right dose, or might I need to adjust?
The 7.5mg dose is part of standard dose titration — most people start at 2.5mg and increase weekly by 2.5mg increments until reaching an effective dose. Some people do well on 7.5mg; others escalate to 10mg, 12.5mg, or the maximum 15mg. Your prescriber will assess your progress and adjust accordingly, so the 7.5mg cost is typically temporary (4 weeks).
Will the NHS prescribe Mounjaro at the same cost as private?
The NHS provides Mounjaro at no direct cost to you if you're eligible and accepted into a specialist tier 3/4 service. However, regional commissioning differs — some areas may not stock specific doses or may have restrictions. Private prescribing offers assured access to any dose, but at a cost.
How do I know if I'm eligible for Mounjaro before paying for a private consultation?
You're likely eligible if you have a BMI of 30kg/m² or above, or BMI of 27–29.9kg/m² with a weight-related health condition (diabetes, high blood pressure, sleep apnoea, cardiovascular disease). Try our free BMI calculator above to check your BMI instantly. Most online prescribers also offer a free eligibility check or initial review.
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.