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
What Is Manjara? UK Health Guide
Manjara is not currently a widely recognised medication name in UK healthcare systems. If you're searching for information about weight management treatments available in the UK, you may be thinking of similar-sounding medications like Mounjaro (tirzepatide) or Wegovy (semaglutide). Both are prescription-only GLP-1 or dual GIP/GLP-1 receptor agonist medications licensed for weight management in UK adults. This guide clarifies what these treatments are, how they work, and how to access them through NHS or private prescribing in the UK.
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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.
UK Weight Management Treatments — Mounjaro and Wegovy
If you've heard about "manjara" or similar terms and are exploring weight management options in the UK, you're likely interested in Mounjaro (tirzepatide) or Wegovy (semaglutide) — the two main prescription-only weight loss injections licensed in the UK. Both are once-weekly injectable medications that work through hormone pathways to help regulate appetite and reduce food cravings. Mounjaro is a dual GIP and GLP-1 receptor agonist, whilst Wegovy is a GLP-1 agonist only. NHS guidance shows that adults with a BMI of 30 or above, or 27 or above with weight-related health conditions such as type 2 diabetes or high blood pressure, may be eligible for these treatments. Access through the NHS is via specialist tier 3 weight management services, though availability and waiting times vary significantly across UK regions. Private prescribing through UK-licensed online pharmacies offers an alternative route for eligible adults. Both medications require a clinical assessment before prescription and work most effectively alongside a reduced-calorie diet and increased physical activity.
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.
Accessing Weight Management Support in the UK
Whether you're exploring weight management through the NHS or privately, the first step is to speak with your GP about your health and weight goals. Your GP can assess your BMI using our free BMI calculator and discuss which tier of weight management support might suit you. NHS Tier 1 services offer self-help digital tools and community programmes; Tier 3 specialist services assess eligibility for prescription treatments like Mounjaro or Wegovy. If you prefer private prescribing, online consultations with UK-licensed prescribers are available without an NHS referral. Whichever route you choose, sustainable weight loss involves realistic goal-setting, dietary changes, and regular physical activity — not medication alone. Use our free weight loss calculator to estimate potential outcomes and our progress tracker to monitor your journey step by step.
- 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 "manjara" the same as Mounjaro?
"Manjara" is not an official medication name. You may be thinking of Mounjaro (tirzepatide), a prescription-only weight management injection licensed in the UK. Mounjaro is manufactured by Eli Lilly and works as a dual GIP and GLP-1 receptor agonist. If you've heard this term elsewhere, it may be a regional spelling variation or mishearing. Always confirm medication names with your GP or pharmacist to ensure you have accurate information.
What is the difference between Mounjaro and Wegovy in the UK?
Both Mounjaro and Wegovy are once-weekly prescription-only injections for UK weight management, but they work differently. Mounjaro (tirzepatide) activates two hormone pathways (GIP and GLP-1), whilst Wegovy (semaglutide) activates one (GLP-1 only). Clinical trials show average weight loss of 15–21% with Mounjaro and approximately 15% with Wegovy. Dosing schedules differ, and individual results vary. Your prescriber will assess which is more suitable for you.
How do I access weight management treatment on the NHS in the UK?
Start by speaking with your GP about your weight and health. Your GP can refer you to a specialist tier 3 weight management service if appropriate. These services assess your BMI, health conditions, and readiness for treatment. NHS access to Mounjaro or Wegovy is through these specialist services, though waiting times and availability vary by region. Private prescribing via online UK-licensed pharmacies is also available without an NHS referral.
What are the eligibility criteria for prescription weight loss treatment in the UK?
You may be eligible if you have a BMI of 30 or above, or 27 or above with weight-related health conditions (type 2 diabetes, high blood pressure, sleep apnoea, or cardiovascular disease). For people of South Asian, Chinese, Black African, or Black Caribbean heritage, eligibility may start at lower BMI thresholds due to higher health risks at lower weights. A prescriber will assess your individual circumstances and suitability.
Can I use our free tools to help with weight management?
Yes. Our free BMI calculator shows your current BMI category using NHS guidelines. Our GLP-1 weight loss calculator estimates potential weight loss at different medication doses. Our weight converter switches between kg, stone, and pounds, and our progress tracker logs your weight loss journey. These tools complement professional medical advice — always consult your GP for personalised guidance.
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.