Anastrozole lowers estrogen levels in postmenopausal women, which may slow the growth of
certain types of breast tumors that need estrogen to grow in the body.
Anastrozole is used to treat breast cancer in postmenopausal women. It is often given to
women whose cancer has progressed even after taking tamoxifen (Nolvadex, Soltamox).
Anastrozole may also be used for other purposes not listed in this medication guide.