Used as a dietary supplement to prevent or treat thiamine deficiency, commonly associated with conditions like beriberi and Wernicke-Korsakoff syndrome. Widely added to fortified foods such as cereals, breads, and infant formulas to ensure adequate daily intake. Employed in pharmaceutical formulations, including injections and oral tablets, for patients with malabsorption issues or chronic alcoholism. Also utilized in animal feed to support growth and metabolic health in livestock and poultry. Serves as a cofactor in carbohydrate metabolism, making it essential in energy-boosting supplements and multivitamin preparations.