The 13 essential vitamins your body needs are vitamins A, C, D, E, K and the B vitamins: thiamine (B1), riboflavin (B2), niacin (B3), pantothenic acid (B5), pyroxidine (B6), biotin (B7), folate (B9) and cobalamin (B12).
The four fat-soluble vitamins—A, D, E, and K—are stored in the body’s fatty tissues. The other nine vitamins are water-soluble and therefore must be replenished regularly because they are removed from the body in your urine. Vitamin B12 is the only water-soluble vitamin that is stored in the liver.
