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 Surgery Glasgow: UK Prescription Medication Options
Weight loss surgery is one option for managing weight in Glasgow, but many people find that prescription weight management medication offers an effective alternative. The NHS and private providers in the UK now offer several licensed medications including Mounjaro and Wegovy, which may help with weight management alongside lifestyle changes. Understanding what's available locally and how to access these options is the first step toward finding an approach that works for you.
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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 Weight Management Medications
Three prescription-only medications are currently licensed in the UK for weight management in eligible adults. Mounjaro (tirzepatide) is a dual GIP and GLP-1 receptor agonist injected once weekly, with doses ranging from 2.5 mg to 15 mg. Clinical trials showed participants lost an average of 15–21% of their body weight over 72 weeks alongside reduced-calorie diet and increased physical activity. Wegovy (semaglutide) is a GLP-1 receptor agonist also injected once weekly, reaching a maximum dose of 2.4 mg, with average weight loss around 15% of body weight in trials. Saxenda (liraglutide) is a daily GLP-1 injection at up to 3 mg per day. All three are prescription-only and require a clinical assessment to determine eligibility. Individual results vary significantly based on adherence, lifestyle factors, and personal health circumstances.
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 Glasgow
In Glasgow, weight loss medication is available through both NHS specialist services and private prescribing. NHS access is typically through tier 3 specialist weight management services following a GP referral, though waiting lists can be lengthy depending on local ICB funding and capacity. Private access is available through GPhC-registered online pharmacies following an online clinical assessment with a UK-licensed prescriber—no NHS referral required. You can use our free BMI calculator to check your personal BMI and understand where you fall on NHS eligibility thresholds. Most people benefit from combining medication with lifestyle changes, so discussing your weight management uk goals with your GP is an important first step, whether you pursue NHS or private routes.
- 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.
Am I eligible for weight loss medication in Glasgow?
You may be eligible if you have a BMI of 30 or above, or 27–29.9 with a weight-related health condition such as type 2 diabetes, high blood pressure, or sleep apnoea. For South Asian, Chinese, Black African, or Black Caribbean adults, lower BMI thresholds apply. A GP or licensed prescriber can assess your individual eligibility.
How quickly will I lose weight with Mounjaro or Wegovy?
Weight loss typically begins within the first few weeks, but the rate varies by individual. Clinical trials showed average losses of 15–21% over 72 weeks (Mounjaro) or around 15% (Wegovy) when combined with diet and exercise. Results depend on adherence, lifestyle changes, and personal metabolism—individual outcomes vary significantly.
What's the difference between weight loss surgery and medication?
Surgery is invasive and permanent; medications are reversible. Bariatric surgery may achieve greater weight loss but carries surgical risks and requires lifestyle adaptation. Medications like Mounjaro and Wegovy are non-invasive and may suit those seeking a less intensive approach, though they require ongoing prescription and adherence.
How do I start weight loss medication through the NHS in Glasgow?
Book an appointment with your GP and discuss weight management options. If eligible, your GP can refer you to a tier 3 specialist weight management service in your local health board. Be aware that NHS waiting times vary—some areas have significant delays. Private prescribing offers faster access without NHS referral.
Can I use our weight loss calculator to estimate my potential results?
Yes. Our free GLP-1 weight loss calculator can help you project potential weight loss outcomes at different medication doses based on clinical trial data. Use it alongside our BMI calculator to understand your current health status and eligible treatment options. Results are estimates only—actual outcomes vary by individual.
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.