An estimated 20% of the US population suffers from some form of folic acid deficiency. And as one of the most difficult water-soluble vitamins to absorb, quality plays an integral role when choosing this essential B vitamin. NOW’s Folic Acid 800 mcg is a state of the art blend that includes 25 mcg of Vitamin B-12 for synergistic effect and quick absorption. When used in combination with vitamin B-12, folic acid may help facilitate the production of cellular energy.