Are diet pills safe while trying to conceive?
While the most dangerous ingredient in diet pills (ephedra) has been banned by the FDA, it’s probably safest again to act as if you were pregnant while trying to conceive. There is not a lot of research on the effect of diet pills and conception or the outcome of any conception, because of the ethics of studying humans this way. The early weeks of pregnancy, before you even know that you are pregnant, are crucial to normal fetal development.