Atenolol
Purpose of Medication and Method of Action
Atenolol is a drug used to lower blood pressure. It belongs to a group of drugs which block receptors in the cardiovascular system called the beta1 adrenergic receptors. Blocking those receptors in the small vessels prevents their constriction and thus reduces blood pressure. Because it reduces the workload of the heart it is also used to treat coronary artery disease and angina.
Side Effects
Among the more common side effects are: fatigue (tiredness), coldness of the extremities, dizziness, and depression.
Drug Interactions
If used with reserpine, significant hypotension (low blood pressure) may occur. A very low heart rate and irregular heart rate can occur when used with diltiazem or varapamil.
Cautions and Contraindications
This medication should be used with caution in patients with a history of bronchial asthma.
Usual Dose
The usual dose is 50-200 mg daily. If atenolol is being used for angina and is discontinued, the dose should be reduced slowly and NOT stopped abruptly.
Patient Medication Information
These information sheets do not list all known side effects of the medications, only the most common side effects. For a complete list of side effects please contact your local pharmacy or the actual drug manufacturing company.