Abstract
Dronedarone is a relatively new antiarrhythmic drug approved for paroxysmal or persistent atrial fibrillation. Dronedarone can inhibit P-glycoprotein-mediated digoxin clearance and increase steady-state digoxin level 2.5 times. It is important to closely monitor plasma digoxin levels or administer a lower loading dose of digoxin in patients taking dronedarone concomitantly. We report a case of digoxin toxicity in a patient taking concomitant dronedarone as a result of interaction between digoxin and dronedarone.
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