Aromatase inhibitors (AIs), such as Arimidex, Aromasin, and Femara, have proven to be more effective than previous hormonal treatments for treating both early and advanced breast cancer in post-menopausal women whose tumors are dependent on estrogen. Compared with tamoxifen, these drugs are less likely to cause blood clots or raise the risk of endometrial cancer. As a result, AIs are used both in patients with early breast cancer and in those with metastatic disease. Read more
