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 Injections in the UK — Cost and Access
Wegovy (semaglutide) is a weekly weight loss injection available in the UK through both NHS specialist services and private prescription. The cost varies significantly depending on your route to access, with private prices typically ranging from £150–£300 per month depending on your dose. Understanding both NHS and private options helps you find the most suitable pathway for your situation. This guide explains how to access Wegovy, what it costs, and what the eligibility criteria are in the UK.
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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 Cost and Private Prescription Access in the UK
Private prescription costs for Wegovy in the UK typically range from approximately £150–£320 per month, depending on your dose level. This includes the cost of the weekly injection pen and the online prescription assessment. Private access is available without an NHS referral — you can contact a GPhC-registered online pharmacy or prescriber to arrange an online consultation.
The most common doses used are 1.7 mg and 2.4 mg (the maximum), which tend to be in the higher cost bracket. Starting doses like 0.25 mg and 0.5 mg may be slightly cheaper. Costs vary between providers, so it's worth comparing prices from different GPhC-registered pharmacies.
- Most private providers charge a consultation fee (typically £20–£50) plus the medication cost
- Prescriptions are valid for the dose prescribed — you cannot shop around once prescribed
- Payment is usually per injection pen (4-week supply)
- Try our GLP-1 weight loss calculator to estimate your potential dose progression and costs over time
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 Routes for Wegovy
NHS access: Wegovy is available through NHS specialist weight management services (tier 3/4), but access is limited and varies significantly by region. NICE has approved semaglutide (Wegovy) for NHS use, but referrals go through specialist services rather than your GP directly. Waiting lists can be very long — sometimes months or years in some areas. There is no cost to you if prescribed on the NHS.
Private access: Faster route — typically an online consultation within 1–7 days, prescription issued if eligible, and medication delivered within days. Requires clinical assessment and a UK-licensed prescriber. You pay privately. To start the process, contact a GPhC-registered online pharmacy, complete a health questionnaire, and have a video or phone consultation with a UK GP or prescriber. They'll assess your BMI, medical history, and eligibility before issuing a prescription.
NHS access: Wegovy is available through NHS specialist weight management services (tier 3/4), but access is limited and varies significantly by region. NICE has approved semaglutide (Wegovy) for NHS use, but referrals go through specialist services rather than your GP directly. Waiting lists can be very long — sometimes months or years in some areas. There is no cost to you if prescribed on the NHS.
Private access: Faster route — typically an online consultation within 1–7 days, prescription issued if eligible, and medication delivered within days. Requires clinical assessment and a UK-licensed prescriber. You pay privately. To start the process, contact a GPhC-registered online pharmacy, complete a health questionnaire, and have a video or phone consultation with a UK GP or prescriber. They'll assess your BMI, medical history, and eligibility before issuing a prescription.
- 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 in the UK privately?
Private Wegovy costs typically range from £150–£320 per month depending on your dose. Costs vary between GPhC-registered pharmacies, so it's worth comparing. Consultation fees are additional, usually £20–£50. For realistic cost projections based on dose progression, use our free GLP-1 weight loss calculator.
Can I get Wegovy free on the NHS in the UK?
Yes, but access is limited. Wegovy is available through NHS specialist tier 3/4 weight management services, but availability varies by region and waiting lists can be very long — sometimes 6–18 months or longer. You'll need a GP referral to a specialist service. Private prescription is a faster alternative.
What is the online consultation process for private Wegovy?
Contact a GPhC-registered online pharmacy, complete a detailed health questionnaire, then have a consultation with a UK-licensed GP (usually by phone or video). They'll assess your BMI, medical history, weight-related conditions, and medications. If approved, a prescription is issued and your Wegovy is dispensed by the pharmacy.
Am I eligible for Wegovy in the UK?
You may be eligible if you have a BMI of 30 or above, or BMI 27–29.9 with at least one weight-related health condition (type 2 diabetes, high blood pressure, high cholesterol, sleep apnoea, or cardiovascular disease). A prescriber will assess your individual circumstances during a consultation.
How does Wegovy compare to Mounjaro for cost and access?
Both are weekly weight loss injections available privately in the UK. Wegovy typically costs £150–£320/month; Mounjaro costs similarly. Both require private prescriptions through online consultants. Both are GLP-1 medications — Mounjaro is a dual GIP+GLP-1 agonist while Wegovy is GLP-1 only. Clinical trials showed different average weight losses, but individual results vary significantly.
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.