Common Beta-Blockers and Their Uses
| Drug | Main Indications | Notes |
|---|---|---|
| Bisoprolol | Heart failure, AF rate control | Most cardioselective — least breathlessness |
| Atenolol | Hypertension, angina | Once daily, widely used |
| Metoprolol | Hypertension, angina, heart failure | Used in USA predominantly |
| Propranolol | Anxiety, migraine prevention, thyrotoxicosis | Non-selective — avoid in asthma |
| Carvedilol | Heart failure | Also an alpha-blocker |
| Labetalol | Hypertension in pregnancy | Safe in pregnancy — alpha+beta blocker |
Never Stop AbruptlyStopping beta-blockers suddenly — especially after a heart attack or in heart failure — can trigger dangerous rebound: severe hypertension, angina, or heart attack. Always taper the dose gradually under doctor supervision.
Side Effects
- Fatigue and tiredness — very common
- Cold hands and feet
- Slower heart rate (bradycardia) — pulse <50 bpm needs medical review
- Worsening breathlessness (especially in asthma)
- Vivid dreams / nightmares (especially propranolol)
- Erectile dysfunction
- Masks hypoglycaemia symptoms in diabetics
Asthma and Beta-BlockersNon-selective beta-blockers (propranolol, carvedilol) are contraindicated in asthma. Cardioselective ones (bisoprolol, atenolol) are used with caution if absolutely necessary — always discuss with your doctor.
Monitoring on Beta-Blockers
| Check | Frequency | Target |
|---|---|---|
| Resting heart rate | At each visit or at home | Usually 50–65 bpm in heart failure |
| Blood pressure | Regular home monitoring | <130/80 mmHg |
| Symptoms of breathlessness | Every visit | Ensure not worsening asthma/COPD |
| Blood glucose (diabetics) | Regular | Beta-blockers can mask hypo symptoms |
Can I take beta-blockers if I have COPD?
Cardioselective beta-blockers (bisoprolol, atenolol) are generally safe in COPD at low doses, and the cardiac benefit often outweighs the risk. Non-selective ones should be avoided.
Beta-blockers and exercise — will I be limited?
Beta-blockers limit maximum heart rate, which reduces exercise capacity. Most people can still exercise normally at a moderate level. Your cardiologist may adjust the dose to allow better exercise tolerance.
Does propranolol help anxiety?
Yes — propranolol blocks the physical symptoms of anxiety (racing heart, tremor, sweating) without sedation. It's commonly used for situational anxiety (e.g. performance anxiety, public speaking).
Medical Disclaimer: This page is for general education only and does not replace professional medical advice. Always consult a qualified healthcare provider.