Reactions to Niacin in Humans

  • 9 years ago
Reactions to Niacin in Humans. Part of the series: Your Diet & Nutrition. Niacin is a vitamin, also known as vitamin B3, important in the metabolism of the three macronutrients, carbohydrates, protein, and fat. Find out about reactions to Niacin in humans with help from a diet and nutrition specialist in this free video clip.