NZ Formulary

Nifedipine

ni-fed-ih-peen

What does it do?

Nifedipine is used to treat high blood pressure and angina by relaxing blood vessels. It is also sometimes used for other conditions.

Before you start

  • Tell your doctor if you are pregnant, planning to become pregnant, or breastfeeding.

How should you take it?

Take nifedipine regularly as directed with a glass of water. You can take it with or without food.
Slow-release tablet: Swallow whole - do not crush or chew.

What if you forget a dose?

If it is nearly time for your next dose, skip the missed dose and take your next dose at the usual time. Otherwise, take the missed dose as soon as you remember. Do not take two doses at the same time.

Can you take other medicines?

Some medicines available without a prescription may react with nifedipine including:

  • anti-inflammatories, such as diclofenac (e.g. Voltaren®), ibuprofen (e.g. Nurofen®), or aspirin (e.g. Disprin®, in doses used for pain relief). These can also be found in some cold and flu medicines (e.g. Nurofen Cold and Flu®).

Tell your pharmacist or doctor about all medicines or treatments that you may be taking, including vitamins, herbal products (e.g. St John's wort) or recreational drugs.

What side effects might you notice?

Side EffectsRecommended action

Flushing

Headache

Swollen feet or legs

Stomach upset

Tell your doctor if troublesome

Symptoms of low blood pressure such as dizziness or fainting

Stand up slowly. If it continues, or is severe, tell your doctor

If you notice any other effects, discuss them with your doctor or pharmacist.

Other information:

  • Grapefruit, grapefruit juice or sour/Seville oranges may react with nifedipine. Discuss with your pharmacist.
  • Do not stop taking nifedipine without talking to your doctor first.