<p>It can cause fetal harm when administered to a pregnant woman. Verify the pregnancy status of females of reproductive potential prior to the initiation of Trastuzumab. Advise pregnant women and females of reproductive potential that exposure to Trastuzumab during pregnancy or within 7 months prior to conception can result in fetal harm. Advise females of reproductive potential to use effective contraception during treatment and for 7 months following the last dose of Trastuzumab. There is no information regarding the presence of Trastuzumab in human milk, the effects on the breastfed infant, or the effects on milk production.</p>