Anastrozole 1mg/ml is a medication used in the treatment of breast cancer in postmenopausal women. It belongs to a class of drugs known as aromatase inhibitors, which work by reducing the production of estrogen in the body. Anastrozole is typically taken as an oral solution with a concentration of 1mg per milliliter. Common side effects of Anastrozole may include hot flashes, joint pain, and nausea. Patients should follow their healthcare provider’s instructions and report any persistent or severe side effects.