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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Moringa Plant Weight Loss — What Works in the UK
Moringa plant is often promoted for weight loss, but evidence for its effectiveness remains limited. If you're exploring weight management options in the UK, it's worth understanding what prescription alternatives are available through the NHS and private clinics. This guide looks at the science behind supplements like moringa, and highlights the prescription weight loss medications that have strong clinical evidence backing them for eligible adults seeking professional support.
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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-Licensed Prescription Weight Loss Options
If you're looking for effective weight management in the UK, prescription medications approved by the MHRA offer evidence-based support. Three main options are available to eligible adults:
- Mounjaro (tirzepatide) — A dual GLP-1 and GIP receptor agonist injected once weekly. Clinical trials showed an average weight loss of around 15–21% of body weight over 72 weeks, alongside dietary changes and increased physical activity.
- Wegovy (semaglutide) — A GLP-1 receptor agonist injected once weekly. Average weight loss in trials was approximately 15% of body weight over 68 weeks.
- Saxenda (liraglutide) — A once-daily GLP-1 injection option, though less commonly prescribed than the weekly alternatives.
All three are prescription-only and require a clinical assessment to determine suitability. Use our free GLP-1 weight loss calculator above to explore potential outcomes at different dose levels, and our BMI calculator to check your current health category.
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.
NHS Access vs Private Weight Loss Treatment
Access to prescription weight loss medication in the UK depends on your eligibility and preferred route. Through the NHS, referral to a tier 3 specialist weight management service is required — your GP can assess whether this is appropriate for you. NHS availability varies significantly by region, and waiting lists can extend several months. Privately, you can access these medications through a consultation with a UK-licensed prescriber; eligibility is assessed individually based on your BMI and health status. Costs typically range from £129–£320 per month depending on the dose. Your GP can discuss both options and help you decide the right approach for your circumstances. Converting your weight using our weight converter can help you understand where you sit relative to treatment thresholds.
- 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 moringa plant effective for weight loss?
Moringa plant is promoted in wellness circles, but clinical evidence for significant weight loss is weak. While it contains nutrients and antioxidants, no major clinical trials support it as a standalone weight loss tool. Prescription medications like Mounjaro and Wegovy have substantially stronger evidence backing their use for weight management.
Who is eligible for prescription weight loss medication in the 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), may be eligible. South Asian, Chinese, Black African, and Black Caribbean adults may qualify at lower BMI thresholds. A prescriber will assess your individual circumstances.
How quickly will I lose weight on Mounjaro or Wegovy?
The NHS recommends losing 0.5–1 kg per week for sustainable results. Prescription weight loss injections are typically used alongside a reduced-calorie diet and increased physical activity. Individual results vary significantly — clinical trial averages showed 15–clinically studied weight loss over several months, but your outcome depends on many factors.
Can I get weight loss medication through the NHS?
Yes, through referral to a specialist tier 3 weight management service. Your GP can refer you if you meet eligibility criteria. Availability and waiting times vary greatly by region. Alternatively, private consultations with UK-licensed prescribers offer faster access without NHS referral.
What's the difference between Mounjaro and Wegovy for weight loss?
Mounjaro is a dual GIP and GLP-1 agonist (maximum dose 15 mg weekly), while Wegovy is a GLP-1 agonist only (maximum 2.4 mg weekly). Clinical trial data suggests Mounjaro may produce slightly greater average weight loss, but individual results vary. Both are prescription-only and require clinical assessment before prescribing.
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.