• Niacin (Vitamin B-3 or Nicotinic Acid or Vitamin PP) is one of the B-complex vitamins, necessary for the good health of the body. NOW's Flush-Free Niacin is designed to be gradually released into the blood, releasing histamine.
• Histamine is a nitrogenous organic compound that dilates blood vessels and breaks down the protein required for blood clotting.

According to research by Harvard Health Publication, niacin when taken alone, can reduce levels of "bad" LDL cholesterol by 15%, and increase levels of "good" HDL cholesterol by 20%. Additionally, niacin when taken alone, can reduce triglyceride levels. When taken in combination with a statin, it can reduce LDL cholesterol levels by 10%.

Adequate intake of niacin contributes to the proper functioning of the nervous system, and helps reduce the frequency of headaches and migraines that occur before menstruation. Conversely, a lack of niacin can cause pellagra, the clinical consequences of which are characterized by dermatological, gastrointestinal, mucosal, and neurological symptoms.