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 for High Blood Pressure — UK Costs & How to Access
Mounjaro (tirzepatide) is a prescription-only weight management injection that may help lower blood pressure in adults with obesity or overweight. If you have high blood pressure alongside excess weight, you may be eligible for Mounjaro through NHS specialist services or private prescription in the UK. This guide explains how to access it, what it costs, and what the eligibility criteria are. Results vary between individuals, and Mounjaro works best alongside dietary changes and increased physical activity.
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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 Access and Cost in the UK
Private prescription costs in the UK typically range from £130 to £320 per month, depending on your starting dose and the provider. Mounjaro is dispensed as a KwikPen device containing four pre-filled weekly injections. Costs vary because:
- Starting dose (2.5 mg): Often £129–£180/month with some providers offering introductory rates
- Maintenance doses (5–15 mg): Typically £200–£320/month as doses increase
- Provider variation: Different UK online prescribers charge different rates; some offer discount packages for longer treatment courses
Private access doesn't require NHS referral — you complete an online consultation with a UK-licensed prescriber, and if approved, your prescription is dispensed by a GPhC-registered pharmacy. The entire process usually takes 3–5 working days from initial consultation to first delivery.
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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 Access vs Private Route — Which Is Right for You?
NHS access is free but often limited. NICE has approved tirzepatide (Mounjaro) for NHS use within specialist tier 3/4 weight management services, but access varies significantly by region and ICB. Waiting lists can extend months or longer in many areas. You'll need GP referral to a specialist weight management service, which then assesses your eligibility.
Private access is faster but costs. If you have high blood pressure and a BMI of 27 or above, you may qualify immediately for private prescription without NHS referral. Use our free GLP-1 weight loss calculator to estimate potential results, and our BMI calculator to check your starting point before consulting a prescriber.
NHS access is free but often limited. NICE has approved tirzepatide (Mounjaro) for NHS use within specialist tier 3/4 weight management services, but access varies significantly by region and ICB. Waiting lists can extend months or longer in many areas. You'll need GP referral to a specialist weight management service, which then assesses your eligibility.
Private access is faster but costs. If you have high blood pressure and a BMI of 27 or above, you may qualify immediately for private prescription without NHS referral. Use our free GLP-1 weight loss calculator to estimate potential results, and our BMI calculator to check your starting point before consulting 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.
Does Mounjaro reduce blood pressure directly?
Mounjaro is not a blood pressure medication. However, clinical evidence shows that weight loss achieved with tirzepatide can lead to improvements in blood pressure, especially in people with obesity-related hypertension. Weight loss of 5–10% often reduces systolic and diastolic blood pressure measurably. Your GP should monitor your blood pressure during treatment.
How much does Mounjaro cost privately per year in the UK?
At average doses (5–15 mg weekly), private Mounjaro costs approximately £2,400–£3,840 per year. Introductory months at starting dose (2.5 mg) may be cheaper at £129–£180. Many private providers offer package discounts for longer commitments, reducing monthly costs slightly. Prices vary between providers.
What's the difference between Mounjaro and Wegovy for blood pressure?
Both are GLP-1-based weight loss injections licensed in the UK. Mounjaro (tirzepatide) is a dual GIP+GLP-1 agonist; Wegovy (semaglutide) is a GLP-1 agonist only. Clinical trials suggest Mounjaro may produce slightly greater average weight loss, which could translate to greater blood pressure reduction. Both require prescription and clinical assessment.
Do I need a GP referral to get Mounjaro privately?
No. Private prescription Mounjaro doesn't require NHS referral. You complete an online clinical assessment with a UK-licensed prescriber, and if approved, your prescription is sent to a GPhC-registered pharmacy. However, your GP should still be informed, especially if you take blood pressure medications that may need adjusting.
What happens if I can't access Mounjaro on the NHS?
If your local NHS waiting list is very long, discuss private options with your GP. Private prescription timelines are typically 3–5 working days. Alternatively, ask your GP about tier 3 services in neighbouring ICBs, NHS weight loss support programmes, or other evidence-based weight management approaches while waiting for NHS specialist access.
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.