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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Trampoline Weight Loss and UK Prescription Options
Trampolining is a fun, low-impact exercise that can support weight loss when combined with a healthy diet — but for many people in the UK, prescription weight management medication offers additional support. If you have a BMI of 30 or above, or a BMI of 27–29.9 with weight-related health conditions, you may be eligible for prescription weight loss treatment. This guide explains the UK-licensed options available and how to find out if medication could help alongside lifestyle changes like regular exercise.
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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 Medications
Three medications are currently licensed in the UK for weight management: Mounjaro (tirzepatide), Wegovy (semaglutide), and Saxenda (liraglutide). All are GLP-1 receptor agonists (or dual GIP/GLP-1 agonists in Mounjaro's case) that work by helping regulate appetite and supporting fullness after meals.
- Mounjaro — once-weekly injection, doses 2.5–15 mg. Clinical trials showed average weight loss of 15–21% of body weight.
- Wegovy — once-weekly injection, doses 0.25–2.4 mg. Clinical trials showed average weight loss of approximately 15% of body weight.
- Saxenda — once-daily injection, doses 0.6–3 mg. Offers an alternative for those preferring daily dosing.
All are prescription-only medicines. Individual results vary significantly, and medication is most effective when combined with reduced-calorie diet and increased physical activity — such as regular trampoline exercise or other forms of movement.
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 vs Private Access — How to Get Started
In the UK, you can access prescription weight loss medication through the NHS or privately. NHS access typically involves referral to a tier 3 specialist weight management service from your GP, though availability varies by region and waiting lists can be lengthy. Private access is available through UK-licensed online prescribers following a clinical assessment — no NHS referral needed.
To find out if you're eligible, start by checking your BMI using our free BMI calculator above. If your BMI is in the eligible range, speak to your GP about NHS options or consider a private consultation. A prescriber will assess your individual health before prescribing any medication, ensuring it's safe and appropriate for you.
- 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.
Can trampolining alone help me lose weight?
Trampolining is excellent low-impact exercise that burns calories and builds muscle. However, sustainable weight loss requires a calorie deficit, typically achieved through combining exercise with dietary changes. For eligible adults, prescription weight loss medication can support this process by helping reduce appetite and cravings alongside lifestyle changes.
Who is eligible for prescription weight loss medication in the UK?
Adults with a BMI of 30 or above, or 27–29.9 with weight-related conditions like type 2 diabetes, high blood pressure, or sleep apnoea may be eligible. Lower thresholds apply for people of South Asian, Chinese, Black African, or Black Caribbean heritage. Your GP or a licensed prescriber can assess your eligibility.
What's the difference between Mounjaro and Wegovy?
Both are once-weekly injections licensed for weight management. Mounjaro is a dual GIP/GLP-1 agonist with average weight loss of 15–21%, while Wegovy is a GLP-1 agonist with average weight loss around 15%. Clinical trial results vary by individual. Your prescriber can discuss which is more suitable for you.
How quickly will I lose weight with prescription medication?
Clinical trials show weight loss develops gradually over weeks and months, not overnight. Average losses from trials are 15–21% body weight, but individual results vary significantly. The NHS recommends losing 0.5–1 kg per week for sustainable results. Medication works best combined with diet and exercise changes.
Can I get weight loss injections on the NHS?
Yes — NICE has approved tirzepatide (Mounjaro) and semaglutide (Wegovy) for use within NHS specialist weight management services. Access is through tier 3 services, typically via GP referral. Availability and waiting times vary significantly by region. Ask your GP about options in your area.
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.