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Betaxolol Dosage

Applies to the following strengths: 20 mg; 10 mg

The information at is not a substitute for medical advice. Always consult your doctor or pharmacist.

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

Renal Dose Adjustments

Mild to moderate renal impairment: No adjustment recommended
Severe renal impairment: Initial dose: 5 mg orally once a day; may increase in 5 mg increments every 2 weeks as needed to a maximum dose of 20 mg orally once a day.

Liver Dose Adjustments

No adjustment recommended.

Dose Adjustments

Bronchospastic disease:
-Use not recommended
-However, if use is necessary, use the lowest possible dose and ensure a bronchodilator is available.
-For doses over 10 mg, consider dividing dosage to avoid higher peak blood levels associated with once a day dosing.


Safety and efficacy have not been established in patients younger than 18 years.

Consult WARNINGS section for additional precautions.


-Initial dose: 5 mg orally once a day
-If response not achieved, increase dose in 5 mg increments every 2 weeks.
-Maximum dose: 20 mg/day

Peritoneal dialysis: This drug is dialyzable; however, no dose adjustment guidelines have been provided.

Other Comments

Administration advice:
-If a dose is missed, take it as soon as remembered; if it is close to the next dose, skip the missed dose; do not double the dose.

-If discontinuation is necessary, gradually taper over 2 weeks, monitor for the signs and symptoms of heart failure and limit exercise.
-Monitor patients taking concurrent ophthalmic beta-blocker solutions for additive effects (e.g., bradycardia, reduced intraocular pressure, and hypotension).
-Inform physicians, ophthalmologists, and dentists when using this drug, especially if surgery is planned.
-This drug interferes with allergic reaction modulation and may increase the risk of anaphylactic reactions; additionally, patients may be refractory to epinephrine in treatment for anaphylactic reactions.

-Heart rate and blood pressure
-Signs and symptoms of heart failure (e.g., shortness of breath, edema, and weight gain), especially in at risk patients
-Signs and symptoms of angina in patients with coronary heart disease, especially during withdrawal

Patient advice:
-Warn patients to avoid interruptions or abrupt discontinuation of this drug.
-Instruct patients to notify their healthcare provider upon signs and symptoms of angina, bradycardia, hypotension, or heart failure (e.g., shortness of breath, edema, and weight gain).
-Avoid driving or operating machinery until the full effects are known.
-Advise patient to speak to healthcare provider if pregnant, intend to become pregnant, or are breastfeeding.
-Patients with diabetes should be informed that this drug may mask hypoglycemic reactions.