Studies of letrozole in animal styles have shown that it causes congenital anomalies if employed in the course of pregnancy, but there have been no scientific studies of this drug in pregnant women.eleven, 13 Because anti-androgens can cause congenital anomalies, they are sometimes taken with oral contraceptives to prevent pregnancy.fourteen https://trentonatjas.ivasdesign.com/55451989/the-smart-trick-of-can-you-have-kids-with-pcos-that-no-one-is-discussing