niacin

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Definition of niacin in English English dictionary: A water-soluble vitamin, a component of vitamin B complex, found in meat, yeast, and dairy products; it is essential to metabolism; a B vitamin essential for the normal function of the nervous system and the gastrointestinal tract; Niacin is a vitamin that occurs in milk, liver, yeast, and some other foods. a type of vitamin that is good for your skin and your nervous system (nicotine + acid + -in chemical compound). or nicotinic acid or vitamin B3 Water-soluble vitamin of the vitamin B complex, essential to growth and health in animals, including humans. It is found in the body only in combined form as a coenzyme, nicotinamide adenine dinucleotide (NAD), which is involved in the metabolism of carbohydrates and the oxidation of sugar derivatives and other substances. One of the most stable vitamins, it survives most cooking and most preserving processes. It is widely found in dietary sources, especially lean meat. Deficiency causes pellagra. It is used as a drug to reduce high cholesterol levels in the blood; {i} vitamin of the B complex which is necessary for the health of the nervous system and the gastrointestinal tract, nicotinic acid; A water-soluble vitamin, a component of vitamin B complex,found in meat, yeast and dairy products; it is essential to metabolism