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 10mg: UK Information and Availability
Mounjaro 10mg is an escalation dose within the tirzepatide treatment pathway for weight management in the UK. It's the third maintenance dose, typically reached after 12 weeks of treatment. Whether it's available depends on whether you're accessing Mounjaro through the NHS or privately. This guide explains what the 10mg dose means, how it fits into your treatment plan, and what you should know about accessing it in the UK.
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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.
Understanding the Mounjaro 10mg Dose and Titration Schedule
Mounjaro 10mg is part of the standard dose escalation protocol used in the UK. Here's how it fits into your treatment pathway:
- Weeks 1–4: 2.5 mg (starting dose)
- Weeks 5–8: 5 mg (first escalation)
- Weeks 9–12: 7.5 mg (second escalation)
- Weeks 13–16: 10 mg (third maintenance dose)
- Weeks 17–20: 12.5 mg (further escalation if needed)
- Week 21+: 15 mg (maximum dose)
Each dose is a once-weekly injection using a KwikPen device. You must spend a minimum of 4 weeks on each dose before escalating. This gradual approach helps your body adjust and reduces gastrointestinal side effects. At the 10mg dose, clinical data suggests meaningful weight loss alongside a reduced-calorie diet and increased physical activity. Individual results vary significantly. Your prescriber will assess whether progressing to 10mg is appropriate for you based on tolerance and response.
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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.
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Accessing Mounjaro 10mg in the UK: NHS vs Private Routes
NHS access: Mounjaro is available through NHS specialist weight management services (tier 3/4). You must be referred by your GP to a specialist service in your area. Availability varies significantly by region, and waiting lists can be substantial. Once prescribed, you follow the standard dose escalation schedule at your specialist clinic. Private access: Mounjaro is available through GPhC-registered online clinics following an online clinical assessment. You can request the 10mg dose if you're already established on Mounjaro, though your prescriber will assess whether escalation is appropriate. Private access is typically faster than NHS, though costs apply. Use our free GLP-1 weight loss calculator to understand potential outcomes at different doses, including the 10mg dose.
- 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 10mg the right dose for me?
Mounjaro 10mg is determined individually by your prescriber based on your tolerance to lower doses, response to treatment, and any side effects. You cannot request a specific dose—escalation is decided by your healthcare professional. Some people reach their weight loss goals at 5mg or 7.5mg and don't need to escalate further. Others benefit from the 10mg dose.
How long does it take to reach the Mounjaro 10mg dose?
Following the standard UK titration schedule, it takes approximately 12–16 weeks to reach 10mg from your starting dose. You spend 4 weeks on each dose (2.5mg, 5mg, 7.5mg) before escalating. This gradual approach minimises side effects and allows your body to adapt.
What side effects might I experience at the Mounjaro 10mg dose?
The most common side effects at 10mg are nausea, diarrhoea, constipation, and reduced appetite. These often ease after a few weeks as your body adjusts. Serious side effects like severe stomach pain require immediate medical attention. Always contact your prescriber if side effects persist or worsen.
Can I get Mounjaro 10mg on the NHS in the UK?
Yes, Mounjaro is available through NHS specialist weight management services for eligible adults. You need a referral from your GP to a tier 3 or tier 4 weight management clinic. Availability and waiting times vary significantly by region (ICB). Private access is faster but involves costs.
What weight loss should I expect at the Mounjaro 10mg dose?
Clinical trials showed an average weight loss of approximately 19.5% body weight at the 10mg dose over 72 weeks, alongside diet and activity changes. Individual results vary considerably. Some people lose more, some less. Your progress tracker can help you monitor your personal outcomes week by week.
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.