Vitamins A, D, E and K are fat soluble. They require an adequate supply of minerals and fats to be absorbed in the digestive system and are stored in the liver.
Vitamin A
Vitamin D
Vitamin E
Vitamin K
There are other substances whose vitamin status has not been established. Some researchers consider these to be vitamins but this is not generally accepted. Such substances include choline, inositol, para-aminobenzoic acid (PABA) and coenzyme Q10.