Uses of Arimidex Anastrozole blocks the use of estrogen by certain types of breast cancer that require estrogen to grow. Anastrozole is used to treat breast cancer. Anastrozole may also be used for purposes other than those listed in this medication guide.

The dose of Arimidex (anastrozole) that is recommended will vary, depending on a number of factors, including the severity of your breast cancer and other medications you may be taking.

For adults, the usual starting dose is 1 milligram tablet and you should be taken once a day. If Arimidex is being used as an initial treatment for advanced breast cancer, you will continue taking the medication until it no longer works against the tumor.

Arimidex Dosage for Breast Cancer:
The recommended dose of Arimidex in postmenopausal women is Arimidex 1 mg a day. For women with advanced breast cancer, the medication should be taken until the tumor begins to grow or spreads (metastasizes). For women with early breast cancer who have undergone surgery or radiation, it is not known how long Arimidex should be taken. In studies, the drug was continued for at least five years in these situations.