Folic Acid - Folic (folacín, folate) is a water soluble vitamin of B group vitamins Series - complex, known as B9. This vitamin is essential for the synthesis of nucleic acid, DNA - carriers of genetic information - in the development of cells involved in the process of cell division and is essential for blood formation. The folic acid deficiency occurs most often in women, especially during pregnancy, which is the increased need because it helps cell division, promotes growth and development and differentiation of fetal tissues, especially nervous system.