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
10mg Mounjaro — Dose Information & Effects
The 10mg dose is a standard escalation dose of Mounjaro (tirzepatide), typically reached around weeks 13–16 of treatment. This is a mid-range dose that balances effectiveness with tolerability for many adults. At this stage, most people have already adjusted to the medication's effects. The dose sits between the initial maintenance dose (5mg) and the maximum licensed dose (15mg). Our GLP-1 weight loss calculator can help you estimate potential outcomes at different Mounjaro doses, including 10mg.
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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.
10mg Mounjaro — Expected Results & Clinical Data
In the SURMOUNT-1 clinical trial, participants at the 10mg dose achieved an average weight loss of approximately 19.5% of their body weight over 72 weeks, alongside a reduced-calorie diet and increased physical activity. For example, someone weighing 100kg might expect to lose around 19.5kg on average — though individual results vary significantly.
- Weight loss typically continues to progress between weeks 13 and 20 as the body adjusts to the 10mg dose
- Many people find side effects (nausea, diarrhoea) improve after the first few weeks at each dose level
- The 10mg dose provides a stronger appetite-suppressing effect than 5mg, but less intense than the maximum 15mg dose
- Results are achieved when Mounjaro is combined with dietary changes and physical activity — medication alone is not sufficient
Individual responses vary based on age, starting weight, metabolism, diet adherence, and activity levels. Some people may benefit from escalating to 15mg, while others find 10mg optimal. Your prescriber will assess your progress and determine the best dose for you.
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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.
10mg Mounjaro — Side Effects & Tolerability
At the 10mg dose, side effects are typically similar to or slightly more pronounced than at 5mg, though many people experience improvement in nausea and other gastrointestinal effects after the first few weeks as their body acclimates. Very common side effects include nausea, diarrhoea, constipation, vomiting, and stomach pain. Less common but serious side effects requiring immediate medical attention include severe stomach pain (possible pancreatitis) or serious allergic reactions.
Most side effects are mild to moderate and improve with time. Staying hydrated, eating small frequent meals, and avoiding greasy foods can help manage gastrointestinal symptoms. If side effects are severe or persistent, inform your prescriber — dose adjustment or additional support may be appropriate. Our progress tracker can help you log side effects alongside weight changes to identify patterns.
- 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.
How long does it take to reach the 10mg Mounjaro dose?
Following the standard titration schedule, it typically takes 12–16 weeks to reach 10mg. You start at 2.5mg for weeks 1–4, then increase by 2.5mg every 4 weeks (5mg weeks 5–8, 7.5mg weeks 9–12, 10mg weeks 13–16). Your prescriber may adjust this timeline based on tolerability.
Can I stay on 10mg Mounjaro long-term?
Yes, many people remain on the 10mg dose long-term if it provides good results and is well-tolerated. You don't have to escalate to the maximum 15mg dose if 10mg is working effectively for you. Your prescriber will review your progress regularly.
What's the difference between 10mg Mounjaro and 10mg Wegovy?
Mounjaro (tirzepatide) is a dual GIP and GLP-1 receptor agonist, while Wegovy (semaglutide) is a GLP-1 agonist only. They're different medications with different mechanisms. Wegovy's maximum dose is 2.4mg (not 10mg), so direct dose comparisons don't apply. Your prescriber will advise which is appropriate for you.
How much weight should I lose on 10mg Mounjaro?
Clinical trials showed average weight loss of approximately 19.5% of body weight over 72 weeks at 10mg — though individual results vary significantly. Some people lose more, some less. Weight loss depends on diet adherence, physical activity, starting weight, and individual metabolism. Results are not assured.
Is 10mg Mounjaro available on the NHS in the UK?
Mounjaro is NICE-approved for NHS use, but availability varies significantly by region through specialist tier 3 weight management services. Waiting lists can be lengthy. You can also access it privately through a UK-licensed prescriber following clinical assessment. Your GP can discuss both options with you.
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.