GNC Folic Acid 400mcg is an important B vitamin that contributes to healthy fetal development. Folic acid is the synthetic type of folate, a vitamin found naturally in leafy green vegetables. Fortified products like cereal, flour and pasta also frequently contain the nutrient. It plays a critical role in the replication and repair of DNA. Folic acid may play a role in the maintenance of normal homocysteine levels. When taken by pregnant women, GNC Folic Acid 400mcg may help reduce woman's risk of having a child with a brain or spinal cord defect.