A pregnant woman should always check with her doctor before using prescription or over the counter medication. This includes dietary supplements and herbs. All medications affect the fetus in a different way depending the stage of development and type or dosage of medication being taken.
Women who take medication for preexisting conditions such as epilepsy and high blood pressure should always check with their doctors or midwives about these medications. It is important to find medications thats are safe for the fetus as well as effective in treating the condition.