Medical Field is ever changing, every other day researchers come up with new findings and improved ways which cure many diseases and enable people to live a healthy and happy life. Atrial Fibrillation (Abnormal Heart Beat) has become very common and researchers are very keen to discover medicines which can help patients in a better and risk-free way. Researchers conducted a study and compare Rivaroxaban and Warfarin, most commonly Physicians suggest these medicines to patients in order to prevent abnormal heart beat followed .