Natural Factors Folic Acid 1mg (1000 micrograms) tablets include 20mg of Vitamin C for antioxidant protection. Folic Acid is necessary for cellular reproduction (especially red blood cells) therefore it is especially important during pregnancy for normal fetal development. Folic acid is necessary for proper brain function being concentrated in the spinal and extracellular fluids. The B vitamin folacin or folic acid works closely with vitamin B12 to produce red blood cells. Folic acid is vital to proper cell division.*Other products from HerbsPro