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Detailed medicine guidance

Side effects of verapamil

NHS medicines information on side effects of verapamil and what you can do to cope.

About this information

This NHS content is written for people in England. Medicine names, availability, prescribing and services may differ in other countries.

Common side effects of verapamil

There are things you can do to help cope with the side effects of verapamil:

Constipation

Get more fibre into your diet, such as fresh fruit and vegetables and cereals, and drink plenty of water. Try to exercise more regularly, for example, by going for a daily walk or run. If you can, it may also help to increase your level of exercise.

Feeling or being sick

Stick to simple meals and do not eat rich or spicy food. It might help to take your verapamil after a meal or snack.

If you are being sick, try to take small, frequent sips of water to avoid dehydration. Signs of dehydration include peeing less than usual or having dark, strong-smelling pee.

If you take the combined contraceptive pill or progestogen-only pill and you're being sick, your contraception may not protect you from pregnancy. Check the pill packet for advice.

Speak to a pharmacist or doctor if you're being sick for more than 1 or 2 days.

Flushing

Try cutting down on coffee and tea. It might help to keep the room cool and use a fan. You could also spray your face with cool water or sip cold or iced drinks.

The flushing should go away after a few days.

Headaches

Make sure you rest and drink plenty of fluids. Paracetamol is safe to take with verapamil. Talk to your doctor if they do not go away or are severe.

Feeling dizzy or tired

If verapamil makes you feel dizzy, stop what you're doing and sit or lie down until you feel better. If it makes you feel tired make sure you rest and drink plenty of fluids. Do not drink alcohol as this may make your symptoms worse.

Do not drive, ride a bike or operate tools or machinery until you feel OK.

Talk to your 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.

Licensed under the Open Government Licence v3.0 ↗. MyPHU is independent and is not endorsed by the NHS.

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