Dronedarone is a medication used to treat certain types of irregular heartbeats, specifically atrial fibrillation and atrial flutter. It works by helping to restore a normal heart rhythm and reduce the risk of hospitalization related to these conditions. Dronedarone is taken orally and is often prescribed for patients who have a history of heart issues. This drug is similar to amiodarone, another antiarrhythmic medication, but has a different chemical structure and fewer side effects. Dronedarone is typically recommended for patients who do not have severe heart failure or significant liver problems, as it may not be suitable for everyone.