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 Doses for Diabetes — How to Access in the UK
Mounjaro (tirzepatide) can be used to help manage type 2 diabetes in adults when other treatments haven't been effective enough. While Mounjaro is primarily licensed for weight management in the UK, it is also approved for type 2 diabetes treatment. Understanding the dose ranges, how to access it, and the costs involved can help you make informed decisions alongside your GP. This guide covers everything you need to know about Mounjaro for diabetes in the UK.
10,000+ calculations today · NHS-aligned thresholds · 100% free
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.
Mounjaro Doses and Treatment Schedule
Mounjaro is administered as a once-weekly injectable using a pre-filled KwikPen device. The dosing schedule for diabetes treatment follows a gradual titration approach:
- Weeks 1–4: 2.5 mg once weekly (starting dose)
- Weeks 5–8: 5 mg once weekly
- Weeks 9–12: 7.5 mg once weekly
- Weeks 13–16: 10 mg once weekly
- Week 17 onwards: 15 mg once weekly (maximum maintenance dose)
Your prescriber will assess your response at each dose level before increasing. The dose titration process typically takes 16–20 weeks to reach the maximum effective dose. Unlike weight management use, diabetes treatment may be continued long-term once an effective dose is established. Your GP or diabetes specialist will monitor your blood sugar levels and adjust your treatment plan accordingly.
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 Access and UK Costs
Access to Mounjaro for diabetes in the UK depends on your route:
NHS Route: Mounjaro for diabetes is available through the NHS, typically via your GP or a diabetes specialist clinic. NICE has recognised tirzepatide as an option for type 2 diabetes, but availability varies by region and your individual clinical circumstances. Your GP will assess your eligibility and may refer you to a specialist service.
Private Route: Private prescriptions are available through UK-licensed online prescribers following a clinical consultation. Costs typically range from £150–£300 per month depending on your dose, with higher doses at the upper end of this range. Private prescriptions are dispensed by GPhC-registered pharmacies. Both routes require a proper clinical assessment to ensure Mounjaro is suitable for your diabetes management.
- 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.
What's the starting dose of Mounjaro for diabetes?
The standard starting dose of Mounjaro for diabetes is 2.5 mg once weekly. This is taken for weeks 1–4, then increased gradually every 4 weeks if tolerated. Your prescriber will decide when to increase your dose based on your blood sugar control and how well you tolerate the medication.
How much does Mounjaro cost in the UK privately?
Private Mounjaro typically costs £150–£300 per month depending on your dose. The 2.5 mg and 5 mg doses are usually at the lower end, whilst 10 mg and 15 mg doses cost more. Prices vary between providers, so it's worth comparing. NHS prescriptions have no patient cost, but availability varies by region.
Can I get Mounjaro for diabetes on the NHS?
Yes, Mounjaro is available on the NHS for type 2 diabetes, though availability and eligibility criteria vary significantly across different UK regions and integrated care boards. Your GP can assess your suitability and refer you to a diabetes specialist if appropriate. NHS waiting times can be considerable in some areas.
How is Mounjaro different from Ozempic for diabetes?
Both contain GLP-1 agonist activity but work slightly differently. Mounjaro is a dual GIP and GLP-1 agonist, which may provide additional benefits. Ozempic is a GLP-1 agonist only. For diabetes, your prescriber will choose based on your individual clinical needs and response. The KwikPen delivery is similar for both.
What should I expect during a Mounjaro diabetes consultation?
Your GP or prescriber will review your medical history, current medications, blood sugar levels, and any contraindications. They'll explain how Mounjaro works, discuss potential side effects, and confirm you understand the injection technique. You'll receive a prescription if suitable, then arrange supply through the NHS or a private pharmacy.
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.