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What does it do?

Disopyramide is used to treat and prevent irregular heartbeats.

How should you take it?

Take disopyramide regularly as directed with a glass of water. You can take it with or without food.

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 disopyramide including:

  • sildenafil (e.g. Viagra®) or similar medicines
  • some antihistamines or anti-nausea medicines such as promethazine (e.g. Phenergan®), hyoscine (e.g. Scopoderm®), meclozine (e.g. Sea-legs®)

Tell your pharmacist or doctor about all medicines or treatments that you may be taking, including vitamins, herbal products or recreational drugs.

What side effects might you notice?

Side EffectsRecommended action

Symptoms of heart problems including: fluttering, pounding or pain in your chest, feeling your heart skips a beat, dizziness or fainting

Tell your doctor immediately

Low blood sugar: symptoms may include sweating, trembling, feeling anxious or irritable

Swollen feet or legs, short of breath

Confusion

Tell your doctor

Dry mouth, blurred vision, constipation or trouble peeing (anticholinergic effects)

Nausea

Tell your doctor if troublesome

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

Other information:

  • Tell your doctor if you have kidney, prostate, bladder or bowel problems, diabetes or angle-closure glaucoma.
  • Tell your doctor if you are pregnant, planning to become pregnant, or breastfeeding.
  • Disopyramide can impair your ability to do tasks such as driving or using machines. Alcohol makes this worse. Discuss your risk with your health professional. (search NZTA - Are you safe to drive?)

This leaflet contains important, but not all, information about this medicine.

Prepared by the PILs Committee at Christchurch Hospital, Canterbury District Health Board, New Zealand. December 2020

For more general information about this sheet and its contents, see: What does a My Medicines sheet cover?

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About My Medicines

My Medicines Patient Information Leaflets (PILs) contain important, but not all, information about the medicines they describe.

For more information about the sheets, see: What does a My Medicines sheet cover?

My Medicines is developed by a team at the Canterbury District Health Board. Our team is made up of doctors, pharmacists, and a non-medical person to help us keep to plain language. We also discuss our information with specialist health professionals or groups when needed