What is Arimidex?
Anastrozole (brand name: Arimidex) is a hormonal therapy medicine used to treat post-menopausal women. If you’ve been diagnosed with breast cancer and have been through menopause, either naturally or surgically — or if your doctor has also prescribed medication to put you in menopause temporarily — you may be prescribed anastrozole.

Uses of Anastrozole:

• To reduce the risk of hormone receptor-positive, early-stage breast cancer coming back (recurring) after surgery
• As a first treatment for hormone receptor-positive, advanced-stage breast cancer
• As a treatment for advanced-stage breast cancer that grew during treatment with tamoxifen
• To reduce the risk of developing breast cancer in postmenopausal women who are at high risk

Important Note:
Anastrozole should not be taken at the same time as tamoxifen because together, they may be less effective and can cause additional side effects.