"Well-tolerated, no-flush niacin. Niacitol® contains inositol nicotinate, a form of no-flush niacin (vitamin B3). Niacitol is well tolerated and unlikely to cause flushing of the skin, a common side-effect of niacin. Inositol nicotinate is composed of one molecule of inositol and six molecules of niacin. Niacin contributes to normal nervous system and psychological function. Niacin contributes to normal energy-yielding metabolism."