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
Understanding Mounjaro Clicks Chart — UK Cost and Access
The Mounjaro clicks chart refers to the dose progression schedule used in the UK when starting tirzepatide treatment. Each "click" on the KwikPen increases the dose over a period of weeks. If you're considering Mounjaro or want to understand how UK prescribing works, it's important to know how costs, access routes, and the dose titration process fit together. This guide covers everything you need to know about accessing Mounjaro in the UK and what to expect at each stage.
10,000+ calculations today · NHS-aligned thresholds · 100% free
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 Costs and Dose Progression in the UK
In the UK, private Mounjaro prescriptions are typically accessed through online consultation services. The cost varies depending on the dose you're prescribed and the provider you use. Starting doses (2.5 mg and 5 mg) generally cost between £129–£180 per month, whilst higher maintenance doses (10–15 mg) typically range from £200–£320 per month. These costs usually include the prescription assessment fee and the medication itself through a GPhC-registered pharmacy. Each KwikPen contains four pre-filled injection devices (a four-week supply), so your monthly cost represents a single pen. Unlike NHS prescriptions in England (which cost £9.90 per item in 2024), private prescriptions do not qualify for the prescription charge cap and must be paid in full. Your prescriber will discuss tirzepatide dose titration with you — the standard progression is 2.5 mg for four weeks, then increasing to 5 mg, 7.5 mg, 10 mg, 12.5 mg, and potentially 15 mg based on your individual response and tolerability.
- Starting doses (2.5–5 mg): £129–£180/month
- Mid-range doses (7.5–10 mg): £180–£240/month
- Maximum doses (12.5–15 mg): £240–£320/month
- Each pen = 4 weeks of once-weekly injections
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 — Route Comparison and Online Assessment
Access to Mounjaro in the UK splits into two distinct routes: NHS specialist services and private online prescribing. NHS access requires referral to a tier 3 specialist weight management service through your GP, but availability varies significantly by region and waiting lists can extend several months. Private access is faster — you complete an online consultation with a UK-licensed prescriber, and if approved, your prescription is dispensed by a GPhC-registered pharmacy within days. The online assessment involves answering health questions, disclosing medications, and confirming your BMI eligibility (typically BMI ≥27 with health conditions or ≥30). Your medical history, blood pressure, and any contraindications (such as pregnancy plans or personal/family history of medullary thyroid cancer) will be reviewed. If approved, your first prescription is issued and you'll receive guidance on injection technique and side effect management.
Use our free GLP-1 weight loss calculator to estimate potential weight loss outcomes at different Mounjaro doses, and our BMI calculator to check your personal BMI to confirm eligibility before seeking a consultation. Many people use both tools to prepare for their assessment conversation with a prescriber.
- 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 "clicks" mean on a Mounjaro KwikPen?
Each click on the Mounjaro KwikPen rotates the dose dial to deliver the next dose increment. The pen is pre-set to deliver one specific dose per injection (2.5 mg, 5 mg, 7.5 mg, 10 mg, 12.5 mg, or 15 mg). You don't "click" to adjust — the click is just the mechanical sound as the dose dial sets. Your prescriber tells you which pre-set dose to use each week.
Can I get Mounjaro on the NHS in the UK?
Yes, Mounjaro (tirzepatide) is approved by NICE for use within NHS specialist weight management services. However, access requires GP referral to a tier 3 service, and availability varies by region with significant waiting lists in many areas. Private prescribing is often faster, though you pay the full cost privately.
How much does Mounjaro cost privately per month in the UK?
Private Mounjaro costs typically range from £129–£320 per month depending on dose. Starting doses cost £129–£180, mid-range doses £180–£240, and maximum doses (12.5–15 mg) cost £240–£320. This includes the prescription assessment fee and is paid in full as it's not eligible for the NHS prescription charge cap.
What's the difference between Mounjaro and Wegovy in terms of UK access?
Both are prescription-only and accessed via NHS specialist services or private consultation. Mounjaro is a GIP/GLP-1 dual agonist with doses up to 15 mg, whilst Wegovy (semaglutide) is a GLP-1 agonist with doses up to 2.4 mg. Private costs are similar, but individual prescriber fees and pharmacy pricing may vary slightly.
What happens during an online Mounjaro consultation?
You complete a health questionnaire covering medical history, current medications, allergies, and contraindications. The prescriber reviews your BMI, blood pressure, and eligibility criteria. If approved, a prescription is issued to a GPhC-registered pharmacy, typically dispensed within 2–3 working days. Guidance on injection technique and side effect management is provided.
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.