Information about Quinidine

Quinidine Uses

Quinidine is used in the treatment of Arrhythmia.

How Quinidine works

Quinidine is an anti-arrhythmic medication. It works by blocking abnormal electrical signals in the heart to correct irregular heartbeat to a normal rhythm.

Common side effects of Quinidine

Diarrhea, Palpitations, Upper abdominal pain, Lightheadedness, Visual disorder, Tremors
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Reviewed By
MD (Pharmacology), MBBS
Last updated
16 Aug 2022 | 10:08 AM (UTC)

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Available Medicine for Quinidine

NatcardineFranco-Indian Pharmaceuticals Pvt Ltd
411 variant(s)

Expert advice for Quinidine

  • It may cause dizziness. Do not drive or perform activities require mental focus until you know how it affects you.
  • Do not start any medicine including prescription or over-the-counter medicines without informing your doctor, as they may alter Quinidine levels in your body.
  • Your doctor may get blood tests done to check your sodium and potassium levels, kidney function, and lung function before starting treatment with this medicine.
  • Your doctor may regularly monitor blood sugar level while taking this medicine.
  • Inform your doctor if you experience slow or fast heart rate, chest pain, shortness of breath.
  • Inform your doctor if you are pregnant or planning to conceive or breastfeeding.
  • Do not stop taking medication suddenly without talking to your doctor. 

Frequently asked questions for Quinidine


Q. Does Quinidine cause thrombocytopenia?

Yes. Quinidine may cause thrombocytopenia. Consult your doctor immediately if you develop any symptoms of thrombocytopenia (easy/ excessive bruising, reddish-purple pinpoint-sized spots in skin, prolonged bleeding from cuts, bleeding from your gums or nose, blood in urine or stools)

Q. Does Quinidine cause constipation?

Quinidine causing constipation is very rare. However, please consult your doctor if you experience such side effects

Q. How does Quinidine treat malaria?

Quinidine interferes with malarial parasite's ability to digest hemoglobin and inhibits the spontaneous formation of betahematin (hemozoin or malaria pigment), which is a toxic product resulting from digestion of hemoglobin by parasites.


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