No Flush Niacin 500 mg No-Flush Niacin contains inositol hexaniacinate, a form of niacin (vitamin B3) used in Europe for over 40 years. Inositol hexaniacinate is not associated with the side effects of U.S.P. forms of niacin in high doses, such as flushing of the skin and upset stomach.
Directions: 1-2 capsules 3 times per day or as directed by a health professional.