Atenolol is a beta blocker medication primarily used to treat high blood pressure and heart-associated chest pain. Although used to treat high blood pressure, it does not seem to improve mortality in those with the condition.[2][3] Other uses include the prevention of migraines and treatment of certain irregular heart beats.[4] It is taken orally (by mouth) or by intravenous injection (injection into a vein).[4] It can also be used with other blood pressure medications.[4]
Common side effects include feeling tired, heart failure, dizziness, depression, and shortness of breath