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
Can I Get Mounjaro Privately in the UK?
Yes, you can get Mounjaro (tirzepatide) privately in the UK without an NHS referral. Private access is available through GPhC-registered online pharmacies and clinics that connect you with UK-licensed prescribers for a clinical assessment. This is an alternative route for adults who meet eligibility criteria but don't want to wait for NHS specialist services. Understanding how private Mounjaro works, what the process involves, and what to expect can help you decide if this route is right 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.
How Private Mounjaro Access Works in the UK
Private Mounjaro is available through online healthcare services that operate within UK regulations. You complete an online consultation, providing details about your weight, health history, and any medications you take. A UK-licensed prescriber reviews your information and, if clinically appropriate, issues a prescription. The prescription is then dispensed by a GPhC-registered pharmacy and delivered to your home.
- No NHS referral needed — you can access this independently
- Faster access — often available within days or weeks, compared to NHS waiting lists which can stretch months or years depending on your region
- Online process — everything is managed remotely; no in-person GP appointment required
- Private cost — you pay for the medication and consultation directly; not covered by the NHS
- Same medication — you receive the same prescription-strength tirzepatide as NHS patients
The prescriber still conducts a proper clinical assessment to ensure Mounjaro is suitable for you, checking your BMI, health conditions, and any contraindications.
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.
Private Mounjaro Eligibility and What It Costs
Private Mounjaro eligibility mirrors NHS guidance: you typically qualify if your BMI is 30 or above, or 27–29.9 with a weight-related health condition such as type 2 diabetes, prediabetes, high blood pressure, or cardiovascular disease. The prescriber will assess this during your online consultation. Costs vary by dose and provider but generally range from approximately £129 to £320 per month. This covers the consultation, prescription, and medication delivery. Our GLP-1 weight loss calculator can help you understand projected outcomes at different doses, though individual results vary significantly. Always check current pricing with your chosen provider, as costs change and may differ based on your starting dose and titration schedule.
- 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 private Mounjaro cost in the UK?
Private Mounjaro typically costs between £129 and £320 per month depending on the dose and provider. Starting doses (2.5mg) are usually at the lower end; maximum doses (15mg) at the higher end. Costs include the online consultation, prescription, and pharmacy dispensing. Check your chosen provider's website for exact current pricing.
Do I need a GP referral to get Mounjaro privately?
No, you don't need a GP referral for private Mounjaro. You access it directly through an online healthcare provider without going through the NHS. However, a licensed prescriber still conducts a clinical assessment to ensure it's safe for you based on your health history and eligibility.
How quickly can I get Mounjaro if I go private?
Private Mounjaro is typically available much faster than NHS access. Many providers can issue a prescription within days of your consultation, with medication delivered within 1–2 weeks. NHS specialist services often have waiting lists of months, making private access quicker if you want to start sooner.
Is private Mounjaro the same as NHS Mounjaro?
Yes, the medication itself is identical — prescription-strength tirzepatide in the same KwikPen format. The difference is the route of access and who pays for it. Privately, you pay directly; through the NHS, it's funded by the health service (if approved by your ICB's specialist weight management service).
What happens in a private Mounjaro online consultation?
You'll answer questions about your weight, height, medical history, current medications, and any allergies. The prescriber reviews your information to assess whether Mounjaro is appropriate. If approved, they issue a prescription that a GPhC-registered pharmacy dispenses. Most consultations take 15–30 minutes and happen entirely online.
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.