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 10 Mg Reviews — Evidence and Practical Information
Mounjaro 10 mg is the mid-range maintenance dose of tirzepatide, a prescription-only weight loss injection available in the UK. This guide explains what clinical evidence shows about the 10 mg dose, how it compares to lower and higher doses, and what eligibility and side effects mean for UK users. This is educational information only — always consult your GP or a licensed prescriber about whether this medication is right for you.
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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.
What Clinical Evidence Shows About Mounjaro 10 Mg
The SURMOUNT-1 clinical trial, which tested tirzepatide in the UK and other countries, showed that participants on the 10 mg dose lost an average of approximately 19.5% of their body weight over 72 weeks — significantly more than lower doses. For example, a person weighing 100 kg might lose around 19.5 kg on average, though individual results vary considerably. This weight loss was achieved alongside a reduced-calorie diet and increased physical activity. Participants on 5 mg lost around 15% on average, whilst those on the maximum 15 mg dose lost approximately 20.9%. The 10 mg dose represents a balance between effectiveness and tolerability for many users. Use our GLP-1 weight loss calculator above to estimate potential weight loss at different Mounjaro doses, including 10 mg.
It's crucial to understand that these are clinical trial averages — your individual result may be higher or lower depending on your metabolism, diet adherence, activity level, genetics, and other health factors. Weight loss is not assured, and some people may lose less or more than the trial average.
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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.
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10 Mg vs Other Mounjaro Doses and Wegovy Comparison
Mounjaro 10 mg falls in the mid-to-upper range of the dosing schedule. The standard escalation involves starting at 2.5 mg and increasing every 4 weeks until reaching an effective dose. Many users find 10 mg provides noticeable appetite reduction and weight loss without the intensity of side effects sometimes reported at 15 mg. When comparing to Wegovy (semaglutide), the UK-licensed GLP-1 alternative, Mounjaro's dual GIP and GLP-1 mechanism may offer different results — clinical trials suggest Mounjaro produces slightly greater average weight loss than Wegovy, though both are prescription-only and require a clinical assessment. The choice between them depends on individual factors, prescriber guidance, and your personal health situation.
Eligibility, Side Effects, and What to ExpectEligibility: Mounjaro 10 mg is available to UK adults with a BMI of 30 or above, or 27 or above with weight-related health conditions such as type 2 diabetes, high blood pressure, or cardiovascular disease. Check your current BMI using our free BMI calculator above. Access is through NHS specialist weight management services or private online prescribing following clinical assessment.
Side effects at 10 mg commonly include nausea, diarrhoea, constipation, and stomach discomfort — these often improve after the first few weeks as your body adjusts. Serious side effects like severe abdominal pain are rare but require immediate medical attention. Always report any concerns to your prescriber.
- 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 10 mg the maximum dose?
No. Mounjaro escalates from 2.5 mg up to a maximum of 15 mg once weekly. The 10 mg dose is a mid-range maintenance dose reached after approximately 12–16 weeks of dose escalation. Some people reach their optimal dose at 10 mg and remain there; others continue escalating to 12.5 mg or 15 mg based on response and tolerability.
How much weight will I lose on Mounjaro 10 mg?
Clinical trials showed participants on 10 mg lost an average of approximately 19.5% of their body weight over 72 weeks. However, individual results vary significantly based on metabolism, diet, exercise, and genetics. Your prescriber can discuss realistic expectations for your situation.
Is Mounjaro 10 mg available on the NHS in the UK?
Mounjaro is available through NHS specialist tier 3 weight management services in some regions, though access varies significantly and waiting lists can be very long. Private access is available through GPhC-registered online pharmacies following an online clinical assessment with a UK-licensed prescriber.
How does Mounjaro 10 mg compare to Wegovy?
Both are prescription-only weight loss injections available in the UK. Mounjaro 10 mg produced an average of clinically studied weight loss in trials, whilst Wegovy (semaglutide) at its maximum 2.4 mg dose produced approximately 14.9% average weight loss. Mounjaro uses a dual GIP and GLP-1 mechanism, whilst Wegovy is GLP-1 only. Both require clinical assessment and are used alongside diet and exercise.
What happens if I don't tolerate the side effects at 10 mg?
If side effects are problematic, your prescriber may reduce your dose back to 7.5 mg or 5 mg to improve tolerability, or switch you to an alternative medication like Wegovy. Never stop or adjust your dose without consulting your prescriber. Most side effects improve within 2–4 weeks as your body adjusts.
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.