Background: Atrial fibrillation (AF) is the most prevalent cardiac arrhythmia accounting for one- third of all arrhythmia related hospitalizations. AF is major risk factor for stroke. Atrial fibrillation is hyper coagulable state in both paroxysmal and chronic atrial fibrillation, AF related stroke can be effectively prevented with oral anticoagulant therapy with vitamin K antagonist or non vitamin K antagonist. The present study was done with objective to detect prevalence of use of anti coagulants in treatment of non-valvular atrial fibrillation.