End of study procedures: Patients will be scheduled for a clinic visit with their primary cardiac electrophysiologist to coincide with the termination of the study (6 months). A study physician will also be available to conduct a brief patient interview, pill count, and ICM interrogation. All pertinent clinical data including AF burden on each AAD, maximal tolerated dose, and any reported side effects will be given to the primary cardiac electrophysiologist to aide in clinical decision making about future AAD treatment.