Anastrozole tablets can cause fetal harm when administered to a pregnant woman. There is no adequate and well-controlled study in pregnant women using Anastrozole tablets. If it is used during pregnancy, or if the patient becomes pregnant while receiving this drug, the patient should be apprised of the potential hazard to the fetus or potential risk for loss of the pregnancy.
It is not known if anastrozole is excreted in human milk. Because many drugs are excreted in human milk, caution should be exercised when Anastrozole tablets is administered to a nursing woman.