Atenolol

Also sold as Atenolol, Atenolol 29300-411

Medicine summary · from official FDA labels · Oct 19, 2026

Serious warning: Cessation of Therapy with Atenolol Patients with coronary artery disease, who are being treated with atenolol, should be advised against abrupt discontinuation of therapy. Severe exacerbation of angina and the occurrence of myocardial infarction and ventricular arrhythmias have been reported in angina patients following the abrupt discontinuation of therapy with beta blockers.

2 recalls on record — a recall affects specific batches; check with your pharmacist.

What it’s used for

Hypertension Atenolol tablets are indicated for the treatment of hypertension, to lower blood pressure. Lowering blood pressure lowers the risk of fatal and non-fatal cardiovascular events, primarily strokes and myocardial infarctions.

How to take it

Hypertension The initial dose of atenolol tablets is 50 mg given as one tablet a day either alone or added to diuretic therapy. The full effect of this dose will usually be seen within one to two weeks.

Important warnings

Cardiac Failure Sympathetic stimulation is necessary in supporting circulatory function in congestive heart failure, and beta blockade carries the potential hazard of further depressing myocardial contractility and precipitating more severe failure. In patients with acute myocardial infarction, cardiac failure which is not promptly and effectively controlled by 80 mg of intravenous furosemide or equivalent therapy is a contraindication to beta-blocker treatment.

Common side effects

Most adverse effects have been mild and transient. The frequency estimates in the following table were derived from controlled studies in hypertensive patients in which adverse reactions were either volunteered by the patient (U.

Interactions

Drug Interactions Catecholamine-depleting drugs (e.

If pregnant or breastfeeding

Pregnancy Teratogenic Effects See WARNINGS, Pregnancy and Fetal Injury .

Forms & strengths

0.5 MG/ML Injectable Solution · 50 MG / 12.5 MG Oral Tablet · 25 MG / 1.25 MG Oral Capsule · 100 MG Oral Tablet · 25 MG Oral Tablet · 50 MG Oral Tablet · 100 MG / 25 MG Oral Tablet · 50 MG / 25 MG Oral Tablet · 50 MG / 20 MG Extended Release Oral Capsule · 5 MG/ML Oral Solution

Questions to ask your doctor or pharmacist

Is this the right medicine for my condition, and how long should I take it?
What side effects should I watch for, and which need urgent attention?
Does this interact with my other medicines, supplements, or alcohol?
What should I do if I miss a dose or take too much?