Medically reviewed by Drugs.com. Last updated on May 31, 2022.
Many trials of antiarrhythmic therapy for non-life threatening arrhythmias, has resulted in increased mortality; the risk of active therapy is probably greatest in patients with structural heart disease. In the case of quinidine used to prevent or defer recurrence of atrial flutter/fibrillation, meta-analysis data has shown that the mortality associated with the use of quinidine was more than three times greater than placebo. Another meta-analysis showed that in patients with various non-life-threatening ventricular arrhythmias, the mortality associated with the use of quinidine was consistently greater than that associated with the use of any of a variety of alternative antiarrhythmics .
Oral route(Tablet)Active antiarrhythmic therapy has resulted in increased mortality; the risk of active therapy is probably greatest in patients with structural heart disease. In a meta-analysis, the mortality associated with the use of quinidine was more than 3 times as great as the mortality associated with the use of placebo. Another meta-analysis showed that in patients with various non-life-threatening ventricular arrhythmias, the mortality associated with the use of quinidine was consistently greater than that associated with the use of alternative antiarrhythmics .
Oral route(Tablet, Extended Release)Active antiarrhythmic therapy has resulted in increased mortality; the risk is probably greatest in patients with structural heart disease .
Commonly used brand name(s)
In the U.S.
- Cardioquin
- Quinaglute
- Quinalan
- Quinidex Extentabs
Available Dosage Forms:
- Tablet
- Tablet, Extended Release
Therapeutic Class: Antiarrhythmic, Group IA
Chemical Class: Cinchona Alkaloid
Uses for quinidine
Quinidine is used to treat abnormal heart rhythms. It is also used to treat malaria.
Do not confuse quinidine with quinine, which, although related, has different medical uses.
Quinidine is available only with your doctor's prescription.
Before using quinidine
In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it
