Used primarily 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 overall metabolic function. Plays a role in cholesterol management by helping reduce low-density lipoprotein (LDL) and increase high-density lipoprotein (HDL) when used under medical supervision. Also utilized in animal feed to ensure proper growth and development. Industrially, serves as a precursor in the synthesis of nicotinamide adenine dinucleotide (NAD), a key coenzyme in redox reactions.