Niacinamide is a water soluble vitamin that is often used as a food additive in many processed foods. While niacin has certain toxic qualities as well as pharmaceutical uses, niacinamide does not share these properties. In large doses of more than 3 grams per day (far below that present in any processed food), niacinamide can be dangerous, causing damage to the liver.
Disclaimer: While this food additive or ingredient may be currently acceptable according to the FDA standards, this may be subject to change in future. This article is for informational purposes only and does not condone the consumption of this substance. Excessive consumption may be dangerous.