Vitamin

vitamin Active form Function Deficiency disease precursor hypervitaminosis Sources vitamin Vitamin A (Chemical names Retinol) Vitamin D (Chemical names cholicalciferol (animals) and ergocalciferol) Vitamin E (Chemical name α-tocopherol) Vitamin K (Chemical name Phylloquinone) Vitamin C (Chemical name Ascorbic acid) Vitamin B1 (Chemical name Thiamin) Vitamin B2 (Chemical name Riboflavin) vitamin Vitamin B6 (Chemical name Pyridoxine) Vitamin B12 (Chemical name Cyanocobalamin) Niacin or Niacinamide Pantothenic acid Biotin Folic acid