Dronedarone is a prescription medication used to treat certain heart conditions, such as atrial fibrillation and flutter. It belongs to the class of antiarrhythmic drugs and works by slowing down the heart rate and preventing irregular heartbeats. Synonyms for dronedarone include a type III antiarrhythmic agent, multichannel blocker, and amiodarone analog. Other related drugs in this class include dofetilide, sotalol, and flecainide. It is important to note that dronedarone should only be taken under the supervision of a healthcare provider, as it may have potential side effects and interactions with other medications.