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Anastrozole Dosage

Applies to the following strength(s): 1 mg

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

Usual Adult Dose for:

Additional dosage information:

Usual Adult Dose for Breast Cancer

For the first-line treatment of postmenopausal women with hormone receptor positive or hormone receptor unknown locally advanced or metastatic breast cancer: 1 mg tablet once a day.

Treatment should continue until tumor progression is evident.

Renal Dose Adjustments

Data not available

Liver Dose Adjustments

Data not available


Safety and effectiveness have not been established in pediatric patients (less than 18 years of age).


Data not available

Other Comments

Anastrozole is indicated for the treatment of advanced breast cancer in postmenopausal women with disease progression following tamoxifen therapy.

Patients with ER-negative disease and patients who did not respond to previous tamoxifen therapy rarely respond to anastrozole.