Chemical Name: ANASTROZOLE (an-AS-troe-zole)

ARIMIDEX is an aromatase inhibitor used to treat breast cancer in women after menopause. Many breast cancer tumors grow in response to estrogen. This medicine interferes with the production of estrogen in the body. As a result, the amount of estrogen that the tumor is exposed to is reduced, limiting the growth of the tumor.

SIDE EFFECTS that may occur while taking this medication include weakness, nausea, headache, hot flashes, pain, vomiting, cough and diarrhea.