DL-Lysine monohydrochloride is widely used in the food and beverage industry as a nutritional supplement to enhance the protein content in various products. It is commonly added to animal feed to promote growth and improve overall health in livestock and poultry. In the pharmaceutical sector, it serves as a key ingredient in dietary supplements aimed at supporting immune function and aiding in the recovery from illnesses. Additionally, it is utilized in cosmetic formulations for its role in promoting skin health and repair. Its ability to act as a stabilizer and flavor enhancer also makes it valuable in processed foods and beverages.