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Dronedarone is used to treat people who currently have normal heart rhythm, but have had atrial fibrillation in the past. Dronedarone decreases the risk that people who have this condition will need to be hospitalized to treat atrial fibrillation. Dronedarone is in a class of medications called antiarrhythmics. It works by helping the heart to beat normally. https://medlineplus.gov/druginfo/meds/a609034.html
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