When a woman is pregnant it's essential that she take extra vitamins. The fetus will need a great deal of vitamins and minerals from the mother's body and if those vitamins aren't replaced the mother could develop serious health problems and the baby could also suffer in the long run. If you were going to get all the extra vitamins and minerals that you need during pregnancy from eating alone you'd need to be eating 24 hours a day.
Pregnant women are usually prescribed pre-natal vitamins that have super high levels of certain vitamins that are crucial for the woman's health and the fetus' health. A woman that isn't on pre-natal vitamins should take extra vitamins and supplements to make sure that she is getting the nutrients her body needs to support the fetus. The vitamins that especially important during pregnancy are: