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Atenolol
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Atenolol

Generic name: atenolol [ a-TEN-oh-lol ]
Brand name: Tenormin
Dosage form: oral tablet (100 mg; 25 mg; 50 mg)
Drug class:Cardioselective beta blockers

Medically reviewed by Sanjai Sinha, MD. Last updated on Mar 14, 2022.

What is atenolol?

Atenolol is a beta-blocker that affects the heart and circulation (blood flow through arteries and veins).

Atenolol is used to treat angina (chest pain) and hypertension (high blood pressure).

Atenolol is also used to lower the risk of death after a heart attack.

Warnings

You should not use this atenolol if you have a serious heart condition such as "AV block," very slow heartbeats, or heart failure.

Do not stop taking atenolol without first talking to your doctor. Stopping suddenly may make your condition worse.

If you are having any type of surgery, be sure the surgeon knows ahead of time that you are using this medicine.

Atenolol can cause side effects that may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be awake and alert. Avoid drinking alcohol, which could increase drowsiness and dizziness while you are taking this medicine.

Atenolol is only part of a complete program of treatment for hypertension that may also include diet, exercise, and weight control. Follow your diet, medication, and exercise routines very closely if you are being treated for hypertension.

If you are being treated for high blood pressure, keep using this medication even if you feel fine. High blood pressure often has no symptoms. You may need to use blood pressure medication for the rest of your life.

Before taking this medicine

You should not use atenolol if you are allergic to it, or if you have:...