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
How to Access Mounjaro Proces in the UK
Mounjaro (tirzepatide) is a prescription-only weight management injection available through both NHS specialist services and private online prescribing routes in the UK. The cost and access pathway depends on which route you choose. This guide explains NHS eligibility, private prescription costs, and what the application proces involves, so you can understand your options for accessing this medication.
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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.
Private Mounjaro Proces and Cost in the UK
Private access to Mounjaro in the UK involves an online consultation with a UK-licensed prescriber, followed by dispensing through a GPhC-registered pharmacy. Private costs typically range from £129 to £320 per month, depending on your dose and the provider. The Mounjaro kwikpen device contains four weekly injections, so each pen covers one month of treatment. Initial consultations usually cost £10–£30, which may be credited towards your first prescription. The dose titration proces means you'll start at 2.5 mg and increase gradually every 4 weeks if needed — so your initial costs are typically lower than maintenance doses. Many providers offer subscription services, allowing you to manage your treatment schedule and costs flexibly. Unlike NHS routes, private prescribing doesn't require referral to specialist services, making it faster to access.
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 Access and the Private Alternative
NHS access to Mounjaro requires referral to a tier 3 or tier 4 specialist weight management service through your GP — it is not available as a standard GP prescription. NICE has approved tirzepatide for NHS use, but availability varies significantly by region (ICB), and waiting lists can be months or years in many areas. Private access bypasses this waiting list entirely. You can access a consultation within days, complete the assessment online, and start your dose titration proces immediately if approved. The trade-off is cost: private treatment is fully self-funded, whereas NHS treatment is free at the point of use. Our GLP-1 weight loss calculator can help you estimate potential results at different doses, and our BMI calculator will help determine your baseline eligibility.
- 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.
What does the Mounjaro prescription proces involve?
The proces begins with an online consultation where a UK-licensed prescriber reviews your medical history, weight, BMI, and any existing health conditions. They'll assess whether Mounjaro is appropriate for you. If approved, your prescription is sent to a GPhC-registered pharmacy, which dispenses your first Mounjaro kwikpen. You'll then start at 2.5 mg and increase gradually every 4 weeks — this is the dose titration proces. Follow-up consultations monitor your progress and manage any side effects.
How much does Mounjaro cost per month in the UK privately?
Private Mounjaro costs typically range from £129 to £320 per month depending on your dose. The 2.5 mg and 5 mg doses are usually cheaper (£129–£180), while 10 mg and higher doses cost £200–£320 per month. Each Mounjaro kwikpen contains four weekly injections. Initial consultations cost £10–£30, sometimes credited to your first prescription. Some providers offer discounted subscription packages.
Is Mounjaro available on the NHS in the UK?
Yes, NICE has approved tirzepatide (Mounjaro) for NHS use in specialist weight management services. However, you must be referred by your GP to a tier 3 or tier 4 specialist service — your GP cannot prescribe it directly. NHS availability and waiting times vary significantly by region. Some ICBs have shorter waiting lists; others have waiting lists exceeding 12 months. If you need faster access, private prescription is an alternative.
What happens after your GP referral for NHS Mounjaro?
Your GP refers you to your local specialist weight management service. You'll be assessed for eligibility based on BMI (usually 30 or above, or 27+ with weight-related health conditions) and existing health conditions. If approved, the specialist service initiates the dose titration proces and monitors your progress. This process can take several months from referral to first injection due to waiting lists, depending on your region.
What's the difference between Mounjaro and Wegovy regarding access?
Both are prescription-only and available through NHS specialist services and private prescribing. Mounjaro is a dual GIP and GLP-1 agonist, while Wegovy is GLP-1 only. Private costs are similar (£129–£320/month). NHS access routes are the same — referral to specialist services. The main difference is clinical: Mounjaro uses a different mechanism, and clinical trials showed slightly higher average weight loss, though individual results vary.
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.