Beta-blockers - Special considerations
- Introduction
- Uses of beta-blockers
- Special considerations
- Side effects of beta-blockers
- Interactions with other medicines
- Missed or extra doses
Before taking beta-blockers, make sure your doctor is aware of any other conditions you have, because they may not be suitable to use.
When to avoid them
You should usually avoid taking beta-blockers if you have:
- a history of asthma – beta-blockers are occasionally used in people with these conditions, but only under careful supervision
- heart block – where the heart beats slower than usual
- severe narrowing of the arteries to the legs or arms
Make sure your doctor is aware if you have a history of allergic reaction to any medication.
Using them with caution
Beta-blockers should be used with caution if you have:
- diabetes – particularly if you have frequent episodes of low blood sugar
- myasthenia gravis – a condition that causes muscle weakness
- slow heart rate
- phaeochromocytoma – high blood pressure caused by a tumour of the adrenal gland
- Prinzmetal's angina – a type of chest pain
Pregnancy and breastfeeding
Some beta-blockers may be suitable for use in some stages of pregnancy and during breastfeeding.
Your GP can advise you about which medicine to use if you're pregnant or breastfeeding.
Stopping beta-blockers
You shouldn't stop taking beta-blockers without first consulting a doctor who is aware of your medical conditions. Suddenly stopping the medicine may cause your condition to get worse.
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