B-Complex is a naturally balanced nutritional formula of known (and probably some remaining unknown) B factors, whose primary function is to enhance energy production and nervous system integrity for cells. Each B vitamin component is at least 100% and not more than 1500% of the DV, producing the right balance to work synergistically except under the direction of a natural physician. The name and function of the recognized B vitamins follows. Several members of B-complex cause yellow-orange urine when optimum tissue levels are reached.