Prenatal Vitamins is the one thing that you should remember in all the excitement of planning nurseries and buying cribs and cute baby clothes, and much before you even conceive. Prenatal vitamins have to be taken prior to, during and even after pregnancy simply because at this crucial time the body's stores are depleted as the body prepares for the baby. Prenatal vitamins contain a combination of important vitamins and minerals that are required for the healthy growth of the baby. If these vitamins are taken at least six months prior to conception, then the chances of birth defects are reduced greatly.