Acute coronary syndrome refers to a range of conditions caused by reduced blood flow in the coronary arteries including unstable angina and myocardial infarction. Angina pectoris is characterized by chest pain or pressure that is triggered by physical exertion or stress and relieved by rest. Medical management of angina aims to decrease oxygen demand on the heart and increase supply by using nitrates, beta blockers, and calcium channel blockers to dilate arteries and slow the heart rate. Antiplatelet drugs like aspirin are also used to prevent clots from worsening the condition.