Niacin, (vitamin B3), is found in many foods, including meat, fish, eggs, green vegetables and grains and can also be synthesized in the body from the amino acid tryptophan. Niacin is a water-soluble vitamin and is not stored in the body so it must be continually replaced through diet.
Niacin plays and essential role in the activities of various enzymes involved the functioning of the nervous and digestive systems, the manufacturing of sex hormones, and the maintenance of healthy skin.* It is necessary for the normal breakdown of fats and the release of energy from carbohydrates.* Niacin is also needed for the activation of folate and the regeneration of glutathione.*