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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Oats Recipe for Weight Loss — UK Medication Context
Oats are a nutritious, high-fibre food that can support sustainable weight loss as part of a balanced diet. However, if you're looking for additional support, prescription weight management options are available in the UK for eligible adults. This guide covers how oats fit into a weight loss strategy, alongside information about NHS-approved medications like Mounjaro and Wegovy that many people use to support their weight loss journey. Whether you're managing weight through diet alone or considering medication, understanding all your options is important.
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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.
UK Prescription Weight Loss Options
For eligible adults in the UK, three prescription weight loss medications are available: Mounjaro (tirzepatide), Wegovy (semaglutide), and Saxenda (liraglutide). These are GLP-1 receptor agonist injections that work by reducing appetite and supporting feeling fuller after smaller meals.
- Mounjaro: Dual GIP/GLP-1 agonist, once-weekly injection, doses 2.5–15 mg. Clinical trials showed average weight loss of 15–21% body weight over 72 weeks.
- Wegovy: GLP-1 agonist, once-weekly injection, doses 0.25–2.4 mg. STEP trial data showed approximately clinically studied weight loss at maximum dose.
- Saxenda: GLP-1 agonist, daily injection, doses 0.6–3 mg.
These medications work best alongside a reduced-calorie diet and increased physical activity—similar to how adding nutritious foods like oats supports overall weight management uk strategies. All three are prescription-only and require a clinical assessment by a licensed prescriber or GP.
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.
How to Access Weight Loss Medication in the UK
NHS access: Available through specialist tier 3 weight management services. You'll need a referral from your GP, though waiting lists vary significantly by region. NHS weight loss services assess your eligibility based on BMI and health conditions.
Private access: Available through GPhC-registered online pharmacies following an online clinical assessment—no NHS referral needed. Costs range from approximately £129–£320 per month depending on dose.
To find out if you're eligible: adults with a BMI of 30 or above, or 27–29.9 with weight-related health conditions (type 2 diabetes, high blood pressure, sleep apnoea, cardiovascular disease) may qualify. Start by speaking with your GP, who can assess your individual circumstances and discuss whether prescription weight loss medication nhs or private options are suitable 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 oats alone help me lose weight?
Oats are high in soluble fibre, which promotes satiety and can support weight loss as part of a calorie-controlled diet. However, weight loss requires a consistent calorie deficit. If lifestyle changes alone aren't working, prescription medications like Mounjaro or Wegovy may help—your GP can advise if you're eligible.
What's the difference between Mounjaro and Wegovy?
Mounjaro (tirzepatide) is a dual GIP/GLP-1 agonist; Wegovy (semaglutide) is a GLP-1 agonist only. Both are once-weekly injections, but Mounjaro has shown slightly higher average weight loss in clinical trials. Individual results vary. Your prescriber will recommend which is most suitable for you.
How quickly will I lose weight on GLP-1 medication?
Weight loss with GLP-1 medications like Mounjaro and Wegovy typically begins within a few weeks, with most weight loss occurring over months. NHS guidance recommends losing 0.5–1 kg per week for sustainable results. Results vary significantly between individuals.
Can I use weight loss medication and diet changes together?
Yes, prescription weight loss medications work best alongside dietary changes and increased physical activity. Eating nutritious foods like oats and using medication together is a common and effective approach to lose weight uk successfully.
How do I know my BMI to check medication eligibility?
Use our free BMI calculator above to check your personal BMI instantly. Eligibility for weight loss medication typically starts at BMI 30 or above, or 27–29.9 if you have weight-related health conditions. Your GP can provide personalised guidance based on your BMI and health profile.
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.