Atenolol is a prescription medication used to treat high blood pressure (hypertension), to prevent angina (chest pain), and to improve survival after a heart attack. Atenolol belongs to a group of drugs called beta blockers, which relax blood vessels and reduce heart rate.
This medication comes in tablet form and is taken once or twice a day, with or without food. Atenolol is also available in an injectable form to be given directly into a vein (IV) by a healthcare professional.
Common side effects include tiredness, nausea, and...