Application:1.Prevention and treatment of pellagra, niacin deficiency disease. Is also used as a blood vessel, the treatment of hyperlipidemia. Also used for the treatment of vascular headache, migraine, cerebral artery thrombosis, pulmonary embolism, inner ear vertigo, frostbite, central retinochoroiditis etc_2.Strictly control the selection or diet, or receive parenteral nutrition for patients due to malnutrition, weight loss, lactation period, pregnancy, and isoniazid, serious addiction, alcoholism, drug addicts, niacin requirement increased.