This NHS content is written for people in England. Medicine names, availability, prescribing and services may differ in other countries.
Common side effects of propranolol
These common side effects of propranolol happen in more than 1 in 100 people. They're usually mild and do not last long. There are things you can do to help cope with them:
Headaches
Make sure you rest and drink plenty of fluids. It's best not to drink too much alcohol. Ask your pharmacist to recommend a painkiller. Talk to your doctor if they do not go away or are severe
Feeling tired, dizzy or weak
As your body gets used to propranolol, these side effects should wear off. If propranolol makes you feel dizzy, sit or lie down until you feel better.
It's best not to drink alcohol as it will make you feel worse. Do not drive or ride a bike until you feel better.
Cold fingers or toes
Put your hands or feet under warm running water, massage them and wiggle your fingers and toes. Do not smoke or have drinks with caffeine in, as this can make your blood vessels narrower and further restrict blood flow to your hands and feet.
Try wearing mittens (they're warmer than gloves) and warm socks. Do not wear tight watches or bracelets.
Feeling or being sick
Stick to simple meals and do not eat rich or spicy food.
If you're being sick, try small frequent sips of water to avoid dehydration. Signs of dehydration include peeing less than usual or having strong-smelling pee.
If you take the combined pill or progestogen-only pill and you're being sick, your contraception may not protect you from pregnancy. Check the pill packet for advice.
Diarrhoea
Drink lots of fluids, such as water or squash, to avoid dehydration. Signs of dehydration include peeing less than usual or having dark, strong-smelling pee. Do not take any other medicines to treat diarrhoea without speaking to a pharmacist or doctor.
If you take the combined pill or progestogen-only pill and you have severe, watery diarrhoea or diarrhoea that lasts for more than 24 hours, your contraception may not protect you from pregnancy. Check the pill packet for advice.
Difficulty sleeping or nightmares
Avoid having a big meal, smoking, or drinking alcohol, tea or coffee in the evening. Try not to watch television or use your mobile phone before going to bed. Instead, try to relax for an hour before bedtime.
Talk to a doctor or pharmacist if the advice on how to cope does not help and a side effect is still bothering you or does not go away.
View the original NHS website page ↗. Refreshed 19 August 2026.
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