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 To Pronounce Mounjaro
Mounjaro is pronounced "MOON-jah-roh" — with the stress on the first syllable. It's the brand name for tirzepatide, a prescription-only weight management injection licensed in the UK. If you're considering Mounjaro or discussing it with your GP, it's helpful to know how to say it correctly. This guide breaks down the pronunciation step by step, plus explains what Mounjaro is and how it's used in UK weight management.
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 Pronunciation Breakdown
Mounjaro is pronounced: MOON-jah-roh
Breaking it down by syllable:
- MOON — rhymes with "noon" or "moon" (the celestial body)
- jah — sounds like "jar" but softer, rhymes with "spa"
- roh — rhymes with "go" or "low"
The stress falls on the first syllable (MOON), so it sounds like: MOON-juh-roh when spoken naturally. The drug's active ingredient is tirzepatide, pronounced "tir-ZEP-uh-tide" — but in UK clinical practice and pharmacy settings, you'll typically refer to the brand name Mounjaro. If you're prescribed this medication or speaking to your GP about it, using the correct pronunciation helps ensure clear communication.
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.
What Mounjaro Is and How It Works
Mounjaro is a prescription-only weight management injection manufactured by Eli Lilly. It's a dual GIP and GLP-1 receptor agonist, which means it activates two natural hormone pathways to help regulate appetite and support feeling fuller after meals. In clinical trials (SURMOUNT-1), adults using Mounjaro alongside a reduced-calorie diet and increased physical activity experienced an average weight loss of 15–21% of their body weight over 72 weeks. Individual results vary significantly. You can estimate potential outcomes using our free GLP-1 weight loss calculator. Mounjaro is administered as a once-weekly injection using a KwikPen device, with doses ranging from 2.5 mg to 15 mg. A prescriber will assess whether Mounjaro is suitable for you based on your individual health and eligibility.
- 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 do you say Mounjaro out loud?
Mounjaro is pronounced "MOON-jah-roh" with stress on the first syllable. It rhymes approximately with "noon" + "jar" + "go". The active ingredient tirzepatide is pronounced "tir-ZEP-uh-tide", but in UK practice you'll typically use the brand name Mounjaro.
Is Mounjaro the same as Wegovy?
No. Both are prescription weight management injections licensed in the UK, but Mounjaro (tirzepatide) is a dual GIP + GLP-1 agonist, whilst Wegovy (semaglutide) is a GLP-1-only agonist. In clinical trials, both showed similar weight loss outcomes, though individual results vary. Your GP or prescriber will discuss which is appropriate for you.
Do I need to know how to pronounce Mounjaro to use it?
Not for using the injection itself, but correct pronunciation helps when discussing the medication with your GP, pharmacist, or healthcare team. It ensures clear communication about your treatment and avoids confusion with other medications.
What's the difference between Mounjaro and Ozempic?
Both contain similar mechanisms but are different medications. Ozempic (semaglutide up to 2 mg) is licensed for type 2 diabetes, whilst Wegovy (semaglutide 2.4 mg) is the licensed weight management version. Mounjaro is a separate medication (tirzepatide). Only Wegovy and Mounjaro are licensed for weight management in the UK.
Where can I get Mounjaro prescribed in the UK?
Mounjaro is available through NHS specialist tier 3 weight management services (referral from your GP) or through private online prescribing following a clinical assessment. Availability and waiting times vary by region. Your GP can advise on NHS options in your area, or you can explore private prescribing pathways independently.
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.