Used in the treatment and prevention of pellagra, a disease caused by niacin (vitamin B3) deficiency. It helps maintain healthy skin, nerves, and digestive system. Commonly added to fortified foods and dietary supplements to support metabolic functions and energy production. In higher doses, it is prescribed to manage high cholesterol levels by lowering LDL (bad cholesterol) and increasing HDL (good cholesterol). Also used in cosmetics for improving skin barrier function and reducing inflammation. Industrially, serves as a precursor in the synthesis of niacin derivatives for pharmaceuticals and animal feed additives.