Sodium nicotinate is widely used in the pharmaceutical industry as a source of niacin (vitamin B3), which is essential for treating pellagra, a condition caused by niacin deficiency. It is also incorporated into dietary supplements to support metabolic functions, improve cholesterol levels, and promote skin health. In the food industry, it serves as a food additive to fortify products with niacin, ensuring adequate nutritional intake. Additionally, it is utilized in cosmetic formulations for its skin-soothing and anti-inflammatory properties, making it a common ingredient in skincare products.