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 Propranolol Cause Weight Loss?
Propranolol typically does not cause weight loss — in fact, this beta-blocker medication is more commonly associated with modest weight gain in some people. If you're taking propranolol and have concerns about your weight, it's important to understand how the medication may affect your body and what weight management options are available through the NHS and private prescribing 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 Propranolol Affects Weight
Propranolol is a beta-blocker used primarily to treat high blood pressure, migraines, and anxiety. The medication works by slowing your heart rate and reducing the force of heartbeats, which can indirectly affect metabolism and weight.
Weight changes with propranolol are more commonly associated with weight gain rather than weight loss. Several mechanisms may contribute to this:
- Beta-blockers can slightly reduce your metabolic rate (the number of calories your body burns at rest)
- Propranolol may increase appetite in some people
- The medication can cause fatigue, which may reduce physical activity levels
- Fluid retention sometimes occurs, appearing as weight gain
However, weight changes vary between individuals. Some people experience no weight change at all whilst taking propranolol. If you've noticed significant weight changes since starting propranolol, discuss this with your GP — your dosage or medication may need adjustment.
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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 Loss and Prescription Options in the UK
If you're struggling with weight management whilst taking propranolol, you have several evidence-based options available in the UK. Prescription weight loss medications — such as GLP-1 injections like Wegovy and Mounjaro — have been clinically proven to support sustainable weight loss alongside diet and exercise.
These medications work through a completely different mechanism to propranolol and can be used alongside beta-blockers. Access to prescription weight loss medication is available through NHS specialist weight management services or private online prescribing following a clinical assessment. Your GP can assess whether you're eligible for NHS support, or you can explore private prescription options. Using our free GLP-1 weight loss calculator can help you understand projected outcomes at different doses if you're considering this route.
- 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 propranolol cause weight loss?
No, propranolol typically does not cause weight loss. It is a beta-blocker that may actually cause modest weight gain in some people due to reduced metabolism and increased appetite. However, individual responses vary — some people experience no weight change. Always discuss any significant weight changes with your GP.
Why does propranolol cause weight gain?
Propranolol may contribute to weight gain through several mechanisms: it can slightly slow your metabolism, increase appetite, cause fatigue (reducing physical activity), and occasionally cause fluid retention. These effects vary between individuals, and not everyone gains weight on propranolol.
Can I take weight loss medication whilst on propranolol?
Yes, prescription weight loss medications like GLP-1 injections can typically be used alongside propranolol. However, always inform your prescriber of all medications you're taking so they can assess safety and any potential interactions before prescribing.
What are NHS-approved weight loss medications in the UK?
The NHS has approved several medications for weight management, including tirzepatide (Mounjaro), semaglutide (Wegovy), and liraglutide (Saxenda). Access through the NHS requires referral to a tier 3 specialist weight management service, though private online prescription is also available.
How can I calculate whether weight loss medication might help me?
Calculate your BMI using our free BMI calculator on this page — this helps determine whether you may be eligible for prescription weight loss support. You can also use our GLP-1 weight loss calculator to explore potential outcomes at different doses based on clinical trial data.
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.