There’s the food we eat, and then there’s the food our cells eat. The essential vitamin B-3, also known as niacin, is involved in many of the stages of converting digestible food into ATP in the mitochondria, the “fuel” that powers our cells. It is a prominent coenzyme present in every cell in the body, where it is critically involved in cellular communication and helps generate the massive energy our bodies require for optimal healthy function. Source Naturals NAD+ is the active coenzyme form of vitamin B-3 that’s ready to go to work immediately, unlike the form of B-3 you may get from your diet which must first be converted into its active form before it is utilized by the body.*