Vitamin B3 500mg is involved in carbohydrate, fat, and protein metabolism and in energy production. It is essential for the release of energy from food. Always read the label. Follow the directions for use. Vitamins and supplements may be of assistance if dietary intake is inadequate. Vitamin B3 is required for energy production (ATP) in skin cells, which is needed for DNA repair Important for cellular energy production and may have a beneficial effect on skin health Helps in the maintenance of normal skin and mucous membranes Helps the body to metabolise carbohydrates, proteins and fats and releases energy from food Pregnancy and lactation increases requirements of Vitamin B3