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
Can I Take Mounjaro If I Have High Blood Pressure?
High blood pressure (hypertension) is actually one of the weight-related health conditions that may make you eligible for Mounjaro in the UK. However, whether you can safely take this prescription-only injection depends on your individual health profile, current medications, and how well your blood pressure is controlled. Your GP or prescriber will assess your suitability during a clinical evaluation. This guide explains what you need to know about Mounjaro and hypertension in the UK.
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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.
How Mounjaro Affects Blood Pressure
Mounjaro (tirzepatide) is a dual GIP and GLP-1 receptor agonist that works by helping regulate appetite and support weight loss. For people with high blood pressure, weight loss itself often leads to improved blood pressure control — this is well-established through NHS guidelines and clinical evidence.
In the SURMOUNT clinical trials, tirzepatide helped participants lose an average of 15–21% of their body weight alongside a reduced-calorie diet and increased physical activity. As weight decreases, blood pressure typically improves, which may reduce your need for blood pressure medication over time.
However, Mounjaro can affect heart rate in some people — your prescriber may monitor this during treatment. Importantly, some blood pressure medications can interact with Mounjaro, particularly those that affect how quickly food leaves your stomach. Your GP must review all your current medications before prescribing.
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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.
Eligibility and What Your GP Needs to Know
If you have high blood pressure alongside a BMI of 27 or above, you may qualify for Mounjaro through NHS specialist weight management services or via a private prescription following a clinical assessment. When discussing Mounjaro with your GP or prescriber, always disclose: your current blood pressure readings, any blood pressure medications you take, family history of heart or kidney disease, and any history of heart problems.
Your prescriber will assess whether Mounjaro's benefits outweigh any risks for your specific situation. Use our free BMI calculator to check your starting point, and our GLP-1 weight loss calculator to see potential outcomes. Your GP may adjust blood pressure medication doses as you lose weight, so regular monitoring is essential throughout treatment.
- 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 Mounjaro safe to take if I have high blood pressure?
Mounjaro may be safe for people with high blood pressure, particularly because weight loss itself often improves blood pressure control. However, individual suitability depends on how well your BP is controlled, other medications you take, and your overall health. Always discuss with your GP or prescriber — they will assess whether it's appropriate for you and monitor you closely.
Can Mounjaro lower my blood pressure medication?
As you lose weight on Mounjaro, your blood pressure often improves, which may mean your GP can reduce or adjust your blood pressure medication doses. This is a positive outcome, but it requires regular monitoring and GP guidance. Never stop or reduce blood pressure medication without speaking to your GP first.
Will Mounjaro raise my blood pressure?
Mounjaro does not typically raise blood pressure. In fact, weight loss on Mounjaro usually supports lower blood pressure over time. However, some people experience changes in heart rate. Your prescriber will monitor this during treatment and discuss any concerns with you.
Can I take Mounjaro if I'm on multiple blood pressure medications?
Yes, you may be eligible, but your prescriber must review all your medications before starting. Some blood pressure medications can interact with how Mounjaro affects digestion. Always provide a complete list of medications to your GP or online prescriber during your clinical assessment.
What should I tell my prescriber about my blood pressure?
Tell them your most recent blood pressure readings, which medications you take for hypertension, how long you've had high blood pressure, and whether it's well-controlled. Also mention any heart or kidney problems, as these affect Mounjaro suitability. This information helps them decide if Mounjaro is right for you and plan appropriate monitoring.
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.