Twenty-six contraindicated drug-drug interactions (0.006%) were found over 297 medical records and 789 prescriptions; 5 pairs with the highest frequency are: Amiodarone-Amitriptyline, Amiodarone-Moxifloxacin, Amiodarone-Colchicine, Levodopa - Sulpiride, and AmiodaroneHaloperidol.