Altraz (Anastrozole), brand name Arimidex, is a nontidal aromatase inhibitor that inhibits the production of estrogen in post-menopausal women. It is most frequently prescribed to combat or prevent certain types of breast cancers which thrive on estrogen. By lowering estrogen levels in the body, these cancers are unable to grow and spread. Get an Anastrozole Tablet, which may be used as a preventative measure in women at high risk of developing breast cancer, to prevent cancer growth in the other breast, or to treat early or advanced stages of existing cancer. It is frequently used in conjunction with other medications, as an adjuvant treatment, or when other medications have failed to produce results.