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
Does Propranolol Cause Weight Loss?
Propranolol, a beta-blocker commonly prescribed in the UK for high blood pressure and anxiety, does not cause weight loss. In fact, many people taking propranolol experience the opposite — modest weight gain is a well-documented side effect. If you're concerned about weight management whilst taking propranolol, your GP can discuss alternative medications or evidence-based weight management strategies with you, including NHS weight loss support programmes and prescription weight loss options for those who qualify.
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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.
How Propranolol Affects Weight
Propranolol works by slowing heart rate and reducing the force of heart contractions, which helps lower blood pressure and reduce anxiety. However, this mechanism can lead to slower metabolism and reduced calorie burning, meaning your body uses less energy at rest. Additionally, propranolol may increase appetite and cause fluid retention, both of which can contribute to weight gain.
Research shows that weight gain is one of the most common side effects of propranolol, particularly when taken long-term. The amount varies between individuals — some people gain only a few pounds, whilst others experience more noticeable increases. This is why it's important to monitor your weight regularly using a free tool like our BMI calculator if you're starting propranolol, and to discuss any concerns with your GP early on.
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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.
Weight Management Options if You're Taking Propranolol
If you're experiencing weight gain whilst taking propranolol, several options are available. First, discuss with your GP whether an alternative beta-blocker with lower weight-gain risk might suit you — some patients do better on different medications. Second, focus on sustainable lifestyle changes: a modest calorie deficit combined with regular physical activity can help offset the metabolic slowdown propranolol causes.
For those who meet NHS weight loss eligibility criteria — including adults with a BMI of 30 or above, or 27 or above with weight-related health conditions — prescription weight management options may be available through your GP or specialist services. Our GLP-1 weight loss calculator can help you explore potential outcomes if you're considering these medications 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.
Can I stop taking propranolol to lose weight?
No — never stop or reduce propranolol without consulting your GP. It's prescribed because you need it for your health. If weight gain is a significant concern, speak to your GP about alternative medications. There may be other beta-blockers or different medication classes that carry lower weight-gain risk.
What's the difference between propranolol and semaglutide?
Propranolol is a beta-blocker for blood pressure and anxiety — it typically causes weight gain. Semaglutide (Wegovy) is a GLP-1 injection licensed specifically for weight management in the UK — it may help with weight loss when used alongside lifestyle changes. They are completely different medications for different purposes.
How much weight do people typically gain on propranolol?
Weight gain varies widely — some people gain only 1–2 kg, whilst others gain 5 kg or more over months. The amount depends on dose, how long you've been taking it, and individual metabolism. Regular monitoring with your GP helps catch significant changes early.
Are there beta-blockers that don't cause weight gain?
Some beta-blockers carry lower weight-gain risk than propranolol — for example, atenolol and bisoprolol may have smaller effects. However, any beta-blocker can potentially affect weight. Your GP can review your current medication and suggest alternatives if weight gain is a major concern.
If I need to lose weight whilst on propranolol, what should I do?
Discuss this with your GP first. Options include trying an alternative medication, increasing physical activity, following a reduced-calorie diet, or exploring structured weight management programmes available through NHS weight loss services. Your GP can assess what's most appropriate for your individual situation.
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.