Medication preventing blood clots are Warfarin, dabigitran, rivaroxaban, edoxaban and apixaban.
Your doctor may also give you medication to control the heart rate, including beta blockers(Atenolol,Bisoprolol,Carvedilol,Metoprolol,Nadolol,Propranolol,Timolol), Calcium channel blockers(Dilitiazem,Verapamil).