Beta blockers are the class of drugs that blocks the action of adrenaline, decreases the heart rate, lowers the blood pressure, widens veins and facilitates easier blood flow. Being one of the essential class of drugs in treating cardiovascular diseases, assessment of rational use of beta blockers will help to identify irrational use and promote better clinical care. So this study aims to assess the Prescribing pattern of beta blockers in cardiology department. The main objectives of the study is to assess the rational use of beta blockers in cardiology department by analyzing the compliance of the prescription with ACC and ESC guidelines and to identify potential drug interactions, adverse drug reactions and also to identify frequently prescribed beta blockers in cardiology department.