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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Wegovy Weight Loss Prices in the UK
Wegovy (semaglutide) is a prescription-only weekly weight loss injection available in the UK through both NHS specialist services and private online prescribing. Costs vary significantly depending on whether you access it through the NHS or privately, your dose level, and your provider. This guide explains UK pricing, how to access Wegovy, and what you can expect to pay for this GLP-1 receptor agonist medication. Understanding both routes helps you make an informed decision about weight management options.
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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.
Wegovy Costs in the UK Private Market
Private Wegovy costs in the UK typically range from £129 to £299 per month, depending on the dose you're prescribed. Initial doses (0.25 mg and 0.5 mg) are usually at the lower end of this range, whilst maintenance doses (1.7 mg and 2.4 mg) cost more. Most private providers charge per injection pen (four weekly doses), or offer monthly subscriptions that include the prescription fee and pharmacy dispensing.
- Starting doses (0.25–0.5 mg): approximately £129–£170 per month
- Mid-range doses (1 mg–1.7 mg): approximately £180–£240 per month
- Maximum dose (2.4 mg): approximately £240–£299 per month
Prices vary between providers and may include or exclude the online consultation fee (typically £15–£30). Some providers offer bundle discounts if you commit to multiple months upfront. Unlike the NHS, private access requires no waiting list, though you must meet eligibility criteria and pass an online clinical assessment.
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 for Wegovy in the UK
NHS access to Wegovy is free at point of use but involves waiting lists and regional variation. Wegovy is approved by NICE for use in specialist tier 3 weight management services, but availability depends on your local Integrated Care Board (ICB). Your GP can refer you to a specialist service, though waiting times can range from weeks to over a year in some areas. Once prescribed through the NHS, you receive Wegovy free on prescription.
The private route offers faster access but you pay out of pocket. You'll need a UK-licensed GP or prescriber to assess your eligibility via an online consultation, then a GPhC-registered pharmacy dispenses your prescription. This can be completed within days. Use our GLP-1 weight loss calculator to estimate potential results at different doses, and our BMI calculator to check whether you meet eligibility thresholds (BMI ≥30 or ≥27 with weight-related health conditions).
- 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.
How much does Wegovy cost on private prescription in the UK?
Private Wegovy costs approximately £129–£299 per month depending on your dose. Starting doses (0.25–0.5 mg) are cheaper; maximum dose (2.4 mg) is at the higher end. Prices include the prescription and pharmacy fee. Some providers offer discounts for longer commitments.
Is Wegovy free on the NHS in the UK?
Yes, Wegovy is free on NHS prescription once approved. However, access is through specialist tier 3 weight management services, requires a GP referral, and waiting lists can be lengthy (weeks to months, or longer in some regions). Availability varies by region.
How quickly can I get a private Wegovy prescription?
Private prescriptions can be issued within 24–48 hours following an online consultation. You'll need to pass a clinical assessment confirming you meet eligibility criteria (BMI ≥30, or ≥27 with weight-related health conditions). Your GPhC-registered pharmacy then dispenses your pen.
What's included in the price of private Wegovy?
The quoted monthly price typically includes the Wegovy pen, the online GP consultation fee, and pharmacy dispensing costs. Some providers bundle these; others list them separately. Always check what's included before purchasing, as prices vary between providers.
Can I switch between NHS and private Wegovy prescriptions?
Potentially, though this should be managed with your healthcare provider. If you start privately and later access NHS services, inform your GP so they can coordinate your care. Conversely, if you're on the NHS and want to switch to private, you'll need a new prescription from a private prescriber.
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.