The six essential nutrients are vitamins, minerals, proteins, fats, water and carbohydrates, vitamin B-1 (thiamine), vitamin B-12 (cyanocobalamin), vitamin B-6, vitamin B-2 (riboflavin), vitamin B-5 (pantothenic acid), vitamin B-3 (niacin), vitamin B-9 (folate, folic acid), vitamin B-7 (biotin) Many adults and children in The United States takes one or more vitamins or other dietary supplements. In addition to vitamins, dietary supplements may contain minerals, herbs or other botanicals, amino acids, enzymes, and many other ingredients.