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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Weight Loss Jabs Near Me — How to Access Them in the UK
Weight loss jabs—also called slimming injections or GLP-1 weight loss injections—are prescription-only medications available in the UK through two main routes: NHS specialist weight management services and private online prescribing. These once-weekly injections, including Wegovy (semaglutide) and Mounjaro (tirzepatide), can support weight management when used alongside a reduced-calorie diet and increased physical activity. Access depends on your BMI, health conditions, and location. This guide explains where to find them and what eligibility looks like.
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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.
How to Access Weight Loss Jabs in the UK
Weight loss jabs are available through two main NHS and private routes in the UK:
NHS route: Referral to a tier 3 specialist weight management service through your GP. You'll be assessed for suitability, and if approved, prescribed medications like Mounjaro or Wegovy. Availability varies significantly by region—some areas have lengthy waiting lists, whilst others have limited capacity. Contact your GP to ask about specialist weight management services in your area or check your local Integrated Care Board (ICB) website.
Private route: Online consultation with a UK-licensed prescriber, typically through a GPhC-registered pharmacy. You complete a health questionnaire, have a video or telephone assessment, and if suitable, receive a prescription and medication posted to your home. This is faster than NHS but involves paying privately—costs typically range from £129–£320 per month depending on dose.
Both routes require clinical assessment to confirm you meet eligibility criteria, which generally means a BMI of 30 or above, or 27–29.9 with weight-related health conditions like type 2 diabetes, high blood pressure, or cardiovascular disease.
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.
What to Expect From Weight Loss Jabs
Weight loss jabs work by mimicking natural hormones that regulate appetite and blood sugar. Wegovy (semaglutide) activates the GLP-1 pathway; Mounjaro (tirzepatide) activates both GIP and GLP-1 pathways, supporting appetite control and potentially greater average weight loss. Clinical trials showed Wegovy users lost around 15% of body weight on average, whilst Mounjaro users lost 15–21% on average—though individual results vary significantly.
Treatment involves weekly injections at home, starting with a low dose and increasing gradually over weeks. Common side effects include nausea, diarrhoea, and reduced appetite—most resolve over time. You'll also need to commit to sustained dietary changes and physical activity; the jabs support these efforts but don't replace them. Regular check-ins with your prescriber monitor your progress and any side effects.
- 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 I get weight loss jabs on the NHS?
Yes, but access is through specialist tier 3 weight management services, not standard GP prescription. Referral eligibility varies by region and local ICB funding. Ask your GP about specialist services in your area. Waiting lists can be several months to over a year in many regions.
What's the difference between Wegovy and Ozempic?
Both contain semaglutide, but Wegovy is specifically licensed for weight management in the UK, whilst Ozempic is licensed for type 2 diabetes. Using Ozempic for weight loss is off-label. Wegovy is the appropriate choice for weight management. Ask your prescriber which is suitable for you.
How much do weight loss jabs cost privately in the UK?
Costs typically range from £129–£320 per month depending on the medication and dose. Wegovy is often around £199–£249 monthly; Mounjaro ranges £179–£299 monthly. Prices vary between providers. Initial consultations are usually £15–£50. Always confirm pricing before starting treatment.
How quickly do weight loss jabs work?
Weight loss typically begins within the first 2–4 weeks, but it's gradual. Most people see meaningful results after 8–12 weeks of consistent use alongside diet and exercise. Average weight loss is 0.5–1kg per week, though this varies. Results depend on adherence, diet quality, and activity level.
Can I use our BMI calculator to check if I'm eligible?
Yes—use the free BMI calculator on this page to check your current BMI against NHS eligibility thresholds. If you have a BMI of 27 or above, or 30 or above, you may be eligible. However, a prescriber will conduct a full health assessment to confirm suitability and check for any medical contraindications.
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.