quinidine, Quinidine Gluconate, Quinidine Sulfate

  • Pharmacy Author:
    Annette (Gbemudu) Ogbru, PharmD, MBA

    Dr. Gbemudu received her B.S. in Biochemistry from Nova Southeastern University, her PharmD degree from University of Maryland, and MBA degree from University of Baltimore. She completed a one year post-doctoral fellowship with Rutgers University and Bristol Myers Squibb.

  • Medical and Pharmacy Editor: Jay W. Marks, MD
    Jay W. Marks, MD

    Jay W. Marks, MD

    Jay W. Marks, MD, is a board-certified internist and gastroenterologist. He graduated from Yale University School of Medicine and trained in internal medicine and gastroenterology at UCLA/Cedars-Sinai Medical Center in Los Angeles.

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PRESCRIBED FOR: Quinidine is an antiarrhythmic drug used in the treatment of abnormal heart rhythms, such as: atrial fibrillation, atrial flutter, and ventricular arrhythmias such as paroxysmal ventricular tachycardia. Quinidine also is used to treat malaria.

SIDE EFFECTS: The most common side effects are:

Other important side effects include:

  • irregular heartbeat,
  • chest pain,
  • skin rash,
  • hearing changes (ringing or loss of hearing),
  • vision changes (blurred or light sensitivity) or
  • unusual bleeding.

If patients experience any of the above side effects, they should call their doctor immediately.



PREPARATIONS: Tablets: 200, 300, and 324 mg. Injections: 800 mg.

STORAGE: Quinidine should be stored at room temperature, 20 C - 25 C (68 F - 77 F). It should be dispensed in well-closed, light-resistant container.


  • For adults, the dosage range for quinidine gluconate is from 648 to 2592 mg/day.
  • For adults, the dosage range for quinidine sulfate is from 400 to 4000 mg/day.
  • For adults, the dosage range for quinidine gluconate injection is 400 to 2400 mg/day.
Medically Reviewed by a Doctor on 3/30/2015

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Heart Disease Pictures Slideshow: Coronary Artery Disease
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