Niacin, also known as <b>nicotinic acid</b>, is an organic compound and a form of <b>vitamin B3</b>, an essential human nutrient. It has the formula C6H5NO2 and belongs to the group of the pyridinecarboxylic acid. Read more .

Riboflavin, also known as <b>vitamin B2</b>, is a vitamin found in food and used as a dietary supplement. Food sources include eggs, green vegetables, milk and other dairy product, meat, mushrooms, and almonds. Read more .

Thiamine, also known as <b>thiamin</b> or <b>vitamin B1</b>, is a vitamin found in food, and manufactured as a dietary supplement and medication. Food sources of thiamine include whole grains, legumes, and some meats and fish. Read more .

Vitamin A is a group of unsaturated nutritional organic compounds that includes retinol, retinal, retinoic acid, and several provitamin A carotenoids (most notably beta-carotene). Vitamin A has multiple functions: it is important for growth and development, for the maintenance of the immune system and good vision. Read more .

Vitamin C, also known as <b>ascorbic acid</b> and <b>L-ascorbic acid</b>, is a vitamin found in various foods and sold as a dietary supplement. It is used to prevent and treat scurvy. Vitamin C is an essential nutrient involved in the repair of tissue and the enzymatic production of certain neurotransmitters. Read more .

Vitamin E is a group of eight fat soluble compounds that include four tocopherols and four tocotrienols. Vitamin E deficiency, which is rare and usually due to an underlying problem with digesting dietary fat rather than from a diet low in vitamin E, can cause nerve problems. Read more .

Vitamin K is a group of structurally similar, fat-soluble vitamins that the human body requires for complete synthesis of certain proteins that are prerequisites for blood coagulation (K from Koagulation, German for coagulation) and which the body also needs for controlling binding of calcium in bones and other tissues. Read more .

Vitamin B6 refers to a group of chemically similar compounds which can be inter-converted in biological systems. Vitamin B6 is part of the vitamin B group of essential nutrients. Its active form, pyridoxal 5--phosphate, serves as a co-enzyme in some 100 enzyme reactions in amino acid, glucose living organism. Within an organism it is responsible for growth and development of a biological cell or an organelle of a biological organism. Energy is thus often said to be stored by cells in the structures of molecules of substances such as carbohydrates (including sugars), lipids, and proteins, which release energy when reacted with oxygen in respiration. Read more .

Proteins are large bio-molecules, or macromolecules, consisting of one or more long chains of amino acid residues. Proteins perform a vast array of functions within organisms, including catalysing metabolic reactions, DNA replication, responding to stimuli, providing structure to cells and organisms, and transporting molecules from one location to another. Read more .