Folate and other prenatal vitamins play a vital role in the normal development of babies inside the womb. This is the reason why most OB-Gyne prescribe these vitamins to expecting women. Based on my experience, the kind of vitamins to be taken will depend on the age of the baby in the womb. I remember that the first prenatal vitamins that I took was Folic acid. According to my OB, this vitamin will help the baby’s brain development. And though, I am not really fond of taking med, whether for prevention or cure, I took all my OBs prescribed vitamins for the sake of my baby.