NZ Formulary

Isradipine

is-ra-dah-peen

What does it do?

Isradipine 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 isradipine regularly as directed with a glass of water. You can take it with or without food.
Slow-release capsule: 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 isradipine including:

  • anti-inflammatories, such as diclofenac (e.g. Voltaren®) or ibuprofen (e.g. Nurofen®). 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:

  • Do not stop taking isradipine without talking to your doctor first.
  • Isradipine is not registered for use in New Zealand. Discuss with your doctor.