B vitamins work together so balance is important. FANCL is particular about the amount of 8 types of B vitamins & also adds inositol to help them work. In addition we use a long-time manufacturing method to ensure that B vitamins which are water-soluble & easily consumed & cannot be stored in the body function for a long time. Two tablets a day will efficiently supplement your intake & it also contains 400μg of folic acid.