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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What Is 7.5mg Mounjaro and How Does It Fit Into UK Treatment?
The 7.5mg dose is an escalation step in Mounjaro (tirzepatide) therapy in the UK, typically introduced after at least 12 weeks on lower doses. At this stage, most patients are assessing how well the medication is working for their weight management. This is where the dual GIP and GLP-1 mechanism becomes increasingly effective. Understanding where 7.5mg fits into your treatment journey—whether through NHS specialist services or private prescribing—helps you know what to expect. Our free BMI calculator can help you assess whether you currently meet NHS eligibility criteria for weight management support.
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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.
7.5mg Mounjaro: Dose Schedule, Eligibility, and NHS Access in the UK
Mounjaro dose progression in the UK follows a careful escalation schedule:
- Weeks 1–4: 2.5mg (starting dose)
- Weeks 5–8: 5mg (first maintenance)
- Weeks 9–12: 7.5mg (escalation — where many patients see stronger appetite suppression)
- Weeks 13–16: 10mg (further escalation if needed)
- Maximum dose: 15mg weekly
The 7.5mg stage typically brings noticeably stronger effects compared to 5mg, as the GLP-1 and GIP receptor activation increases. NHS eligibility for weight loss medication requires: a BMI of 30 or above, or 27–29.9 with weight-related health conditions (type 2 diabetes, hypertension, sleep apnoea, cardiovascular disease). Adults of South Asian, Chinese, Black African, or Black Caribbean heritage may qualify at slightly lower BMI thresholds due to higher metabolic risk. Access through NHS specialist tier 3 weight management services varies significantly by region; waiting times can extend several months in many areas.
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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.
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 for Mounjaro 7.5mg in the UK
NHS route: Mounjaro is now available through specialist tier 3 weight management services following NICE approval, but access depends on your local Integrated Care Board (ICB) and service capacity. You'll need a GP referral and clinical assessment by the specialist team. The main advantage is NHS coverage, but waiting lists are lengthy in most regions.
Private route: A UK-licensed prescriber can assess you for Mounjaro via online consultation without NHS referral. If approved, the prescription is dispensed by a GPhC-registered pharmacy. This route bypasses NHS waiting lists but involves costs (typically £200–£280 per KwikPen depending on dose and provider). Either route requires a proper clinical assessment—tirzepatide is prescription-only and not suitable for everyone. Try our GLP-1 weight loss calculator to see potential outcomes at different doses alongside lifestyle changes.
- 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.
Is 7.5mg Mounjaro a standard dose in the UK?
Yes, 7.5mg is a standard escalation dose used in UK Mounjaro treatment protocols. It sits between the 5mg maintenance dose and 10mg escalation. Most patients stay on 7.5mg for 4 weeks before the prescriber assesses whether to increase further. The dose you take depends on your individual response and tolerability.
What side effects might I expect at 7.5mg Mounjaro?
At 7.5mg, you may experience stronger appetite suppression than at lower doses, plus common side effects including nausea, diarrhoea, constipation, and stomach discomfort. Most people find side effects improve within a few days of starting a new dose. If nausea persists beyond a week, contact your prescriber—they can advise on management strategies or dose adjustment.
How long does it take to get Mounjaro 7.5mg on the NHS?
Through NHS specialist services, the timeline depends on your local ICB's waiting list and capacity. Many areas have waiting times of 3–12 months for initial assessment. Private prescribing is typically faster—usually 1–2 weeks from initial consultation to prescription. Ask your GP about local NHS availability or consider private options if the wait is long.
Can I skip from a lower dose straight to 7.5mg?
No—tirzepatide requires careful dose escalation. You must complete at least 4 weeks on each dose (2.5mg, then 5mg, then 7.5mg). This allows your body to adjust and helps your prescriber assess how well the medication is working and tolerating before increasing. Rapid escalation increases the risk of side effects.
How does Mounjaro 7.5mg compare to Wegovy at similar strength?
Mounjaro is a dual GIP and GLP-1 agonist, whereas Wegovy (semaglutide) is GLP-1 only. A rough equivalence would be Mounjaro 7.5mg to Wegovy 1.7mg, though this is approximate. Both are prescription-only, and neither is "better"—individual response varies significantly. Your prescriber will recommend based on your medical history and eligibility.
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.