Atenolol is one of the beta-adrenergic blocking agents that is used alone or in combination with other medicines to control high blood pressure, relieve angina (chest pain), regulate heartbeat and treat heart attacks.
It affects the nerve impulse response in certain parts of the body, so that the heart rate slows and the blood vessels relax. Atenolol comes as an oral tablet to be taken once or twice every day.
Common side effects of this medicine include dizziness, drowsiness, tiredness, light headache, upset stomach, depression or diarrhea.
Atenolol may be used to treat tremors, prevent migraine headaches and treat other conditions, as suggested by your doctor.