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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Mounjaro Click Chart PDF — UK Dosing and Escalation Guide
The Mounjaro click chart (often called a dosing chart or titration guide) shows the step-by-step escalation schedule for tirzepatide injections in the UK. This guide explains how the Mounjaro KwikPen works, outlines the dose progression from 2.5 mg to 15 mg, and covers NHS and UK prescribing context. Whether you're starting treatment or tracking dose increases, understanding your click chart is essential for safe, effective use of this prescription weight management injection.
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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.
What Is the Mounjaro Click Chart and How Does It Work?
The Mounjaro click chart is a visual reference guide that shows the weekly injection schedule and dose escalation plan for tirzepatide. The Mounjaro KwikPen is a pre-filled auto-injection device, and the click chart helps you identify which dose setting you're using each week. Each dose increment represents a 2.5 mg or 5 mg step:
- Weeks 1–4: 2.5 mg (starting dose)
- Weeks 5–8: 5 mg (first escalation)
- Weeks 9–12: 7.5 mg
- Weeks 13–16: 10 mg
- Weeks 17–20: 12.5 mg
- Weeks 21+: 15 mg (maximum maintenance dose)
Your prescriber will advise which dose is right for you based on your clinical assessment and health goals. The KwikPen colour-coded design and click mechanism make it easy to select the correct dose each week. Most patients spend at least 4 weeks on each dose before escalating, allowing your body to adjust and minimising gastrointestinal side effects. A PDF click chart can be printed and kept with your medication as a reference guide.
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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.
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NHS Eligibility and UK Prescribing Context for Mounjaro
In the UK, Mounjaro (tirzepatide) is prescription-only and NICE has approved it for use within NHS specialist weight management services (tier 3 services). NHS eligibility criteria include a BMI of 30 kg/m² or above, or BMI 27–29.9 with at least one weight-related health condition such as type 2 diabetes, prediabetes, high blood pressure, or sleep apnoea. Adults of South Asian, Chinese, Black African, or Black Caribbean heritage may be eligible at lower BMI thresholds. Access through the NHS typically requires a referral from your GP to a specialist weight management service. Regional availability varies significantly — some areas have longer waiting lists than others. You can use our free BMI calculator above to check where your weight falls, and our GLP-1 weight loss calculator to estimate potential outcomes with tirzepatide.
Private prescribing routes are also available in the UK through GPhC-registered online services, which may offer faster access without an NHS referral. Private prescribers will assess your eligibility based on MHRA-approved criteria and medical history. Whether NHS or private, tirzepatide requires ongoing clinical monitoring, and your prescriber will track your progress, adjust your dose, and monitor for side effects. The NHS continues to monitor tirzepatide safety (MHRA Black Triangle ▼ status), and clinical data from the SURMOUNT trials shows average weight loss of approximately 15–21% body weight at maintenance doses — though individual results vary significantly. Always store your KwikPen in a refrigerator (2–8°C) before use, and at room temperature for up to 30 days after first use.
- 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 click chart show?
The click chart is a visual guide showing the weekly dose escalation schedule for your Mounjaro KwikPen. It maps out which dose (from 2.5 mg to 15 mg) you'll use each week, helping you select the correct dose setting on your pen and track your progress through the 20-week titration phase.
How is Mounjaro accessed on the NHS in the UK?
NHS access requires referral to a tier 3 specialist weight management service from your GP. You must meet eligibility criteria (BMI ≥30, or ≥27 with weight-related health conditions). Regional availability varies, and waiting lists can be lengthy. Private prescribing is faster but requires payment.
What's the difference between Mounjaro and Wegovy in the UK?
Mounjaro (tirzepatide) is a dual GIP + GLP-1 agonist, while Wegovy (semaglutide) is a GLP-1-only agonist. Mounjaro reaches a higher maximum dose (15 mg vs 2.4 mg) and may offer slightly higher average weight loss. Both are prescription-only and require clinical assessment before prescribing.
Can I download a Mounjaro click chart PDF from my pharmacy?
Yes, your prescriber or pharmacy may provide a printed or digital click chart when you receive your prescription. Many patient information resources include dosing charts. Your prescriber will also guide you through the escalation schedule during your assessment and follow-up appointments.
What should I do if I miss a dose or skip a week?
If you miss a dose within 4 days, take it as soon as you remember and continue your normal weekly schedule. If more than 4 days have passed, skip that dose and take your next scheduled injection. Never take two doses close together — maintain at least 72 hours between injections.
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.