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
Weight Loss Medication Options Available in Worthing
If you're looking for weight loss support in Worthing, prescription medications are now available through both NHS and private routes. The UK has approved several prescription weight management options including Mounjaro, Wegovy, and Saxenda for eligible adults. This guide explains what these medications are, who qualifies, and how to access them locally. Start by checking your BMI using our free BMI calculator above to understand where you stand health-wise.
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.
UK-Licensed Prescription Weight Loss Options
Three prescription medications are currently licensed in the UK for weight management uk in adults. Mounjaro (tirzepatide) is a dual GIP and GLP-1 receptor agonist given as a once-weekly injection. In clinical trials, it helped participants lose an average of 15–21% of their body weight when used alongside dietary changes and physical activity. Wegovy (semaglutide) is a GLP-1 injection also given once weekly, with trials showing an average weight loss of around 15%. Saxenda (liraglutide) is a daily injection offering similar support. All three are prescription-only medicines requiring a clinical assessment before being prescribed. Eligibility typically includes 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. For South Asian, Chinese, Black African, or Black Caribbean adults, lower BMI thresholds may apply.
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 in Worthing
In Worthing, NHS weight loss medication is accessed through specialist tier 3 weight management services, typically via GP referral. However, NHS availability varies significantly by region and waiting times can be lengthy. Alternatively, prescription weight loss uk through private online prescribing is available without a referral—after an online clinical assessment with a UK-licensed prescriber, eligible patients receive a prescription dispensed by a registered pharmacy. Your GP can advise whether you meet eligibility criteria and discuss which route suits you best. Try our free GLP-1 weight loss calculator to estimate potential results at different doses, and use our weight converter to track progress in your preferred units.
- 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.
What does BMI have to do with weight loss medication eligibility?
BMI (body mass index) is the primary screening tool used to assess eligibility 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, may qualify. Use our free BMI calculator above to check your personal BMI and understand your starting point.
Can I get weight loss medication through my Worthing GP?
Your Worthing GP can assess your eligibility and refer you to specialist weight management services (NHS tier 3), where prescription medication may be offered. However, NHS provision varies by area and waiting lists can be long. Private online prescribing is also available as an alternative route.
How much weight can I expect to lose with these medications?
Clinical trials showed average weight loss of 15–21% of body weight depending on the medication and dose—but individual results vary significantly. Weight loss is achieved alongside a reduced-calorie diet and increased physical activity. Results depend on your metabolism, adherence, and lifestyle changes.
Are GLP-1 weight loss injections safe?
All three UK-licensed medications have undergone rigorous safety assessment by the MHRA. Common side effects include nausea and digestive changes, which typically improve over time. Serious side effects are rare. Always discuss any health concerns with your prescriber before starting.
How do I know if I'm eligible for prescription weight loss treatment?
Your GP or a prescriber can assess your eligibility based on your BMI, health history, and any weight-related conditions. Start by calculating your BMI using our free tool above, then discuss your options with your healthcare provider to see if medication is appropriate for you.
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.