what is atenolol medication for

Atenolol is a medication used to treat high blood pressure, also known as hypertension, and chest pain, also known as angina. It belongs to a class of drugs called beta-blockers, which work by blocking the action of certain natural chemicals in the body, such as epinephrine, on the heart and blood vessels. This effect lowers the heart rate, blood pressure, and strain on the heart. Atenolol can also be used to improve survival after a heart attack, prevent migraines, and help with anxiety. It is available as a tablet to be taken by mouth, usually once a day for the treatment of high blood pressure and angina, and once or twice a day to improve survival after a heart attack. The dosage is based on the patients medical condition and response to treatment, and it is important to take atenolol exactly as directed by a doctor or pharmacist. Some common side effects of atenolol include dizziness, fatigue, diarrhea, and nausea. Patients should not stop taking atenolol suddenly without first talking to their doctor, as this may make their condition worse.