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Generic name: betaxolol [ bay-TAX-oh-lol ]
Brand name: Kerlone
Dosage form: oral tablet (10 mg; 20 mg)
Drug class: Cardioselective beta blockers

Medically reviewed by on Aug 10, 2023. Written by Cerner Multum.

What is betaxolol?

Betaxolol is a beta-blocker. Beta-blockers affect the heart and circulation (blood flow through arteries and veins).

Betaxolol is used to treat hypertension (high blood pressure).

Betaxolol may also be used for purposes not listed in this medication guide.

Betaxolol side effects

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Betaxolol may cause serious side effects. Call your doctor at once if you have:

Slow heartbeats may be more likely in older adults.

Common side effects of betaxolol may include:

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.


You should not use betaxolol if you have a serious heart condition such as "AV block" (2nd or 3rd degree), uncontrolled heart failure, slow heartbeats that have caused you to faint, or if your heart cannot pump blood properly.

Before taking this medicine

You should not use betaxolol if you are allergic to it, or if you have a serious heart condition, such as:

To make sure betaxolol is safe for you, tell your doctor if you have ever had:

Using betaxolol during pregnancy could harm the unborn baby, or cause heart or lung problems in the newborn baby. Tell your doctor if you are pregnant or if you become pregnant while using betaxolol.

Betaxolol can pass into breast milk and may cause side effects in the nursing baby. Tell your doctor if you are breast-feeding.

Betaxolol is not approved for use by anyone younger than 18 years old.

How should I take betaxolol?

Follow all directions on your prescription label. Your doctor may occasionally change your dose. Do not use this medicine in larger or smaller amounts or for longer than recommended.

It may take up to 2 weeks before your blood pressure improves.

Keep using this medicine as directed, even if you feel well. High blood pressure often has no symptoms. You may need to use blood pressure medicine for the rest of your life.

Betaxolol may be only part of a complete treatment program that may also include diet, exercise, weight control, and taking other medications. Follow your doctor's instructions very closely.

This medicine can cause unusual results with certain medical tests. Tell any doctor, dentist, or eye doctor who treats you that you are using betaxolol.

You should not stop using betaxolol suddenly. Follow your doctor's instructions about tapering your dose and limiting physical activity for a short time.

Store at room temperature away from moisture and heat.

Keep the bottle tightly closed when not in use.

Betaxolol dosing information

Usual Adult Dose for Hypertension:

Initial dose: 10 mg orally once a day
Dose titration: If desired response is not achieved after 1 to 2 weeks, dose may be doubled.
Maximum dose: 40 mg per day

-Doses greater than 20 mg once a day did not result in significant additional antihypertensive effects; however, the 40 mg dose has been studied and was well tolerated.

Use: Management of hypertension alone or with another antihypertensive agent, especially thiazide diuretics

What happens if I miss a dose?

Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

Overdose can cause slow heartbeats, shortness of breath, dizziness, fainting, or low blood sugar (headache, hunger, irritability, feeling anxious or shaky).

What should I avoid while taking betaxolol?

betaxolol may impair your thinking or reactions. Avoid driving or operating machinery until you know how this medicine will affect you.

Drinking alcohol with betaxolol can cause side effects.

What other drugs will affect betaxolol?

Tell your doctor about all your current medicines and any you start or stop using, especially:

This list is not complete. Other drugs may interact with betaxolol, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible interactions are listed in this medication guide.

Further information

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.