DL-Lysine is widely used in the animal feed industry as a nutritional supplement to promote growth and improve feed efficiency, particularly in livestock and poultry. It helps balance amino acids in feed formulations, ensuring optimal protein synthesis and muscle development. In the pharmaceutical sector, it is utilized in dietary supplements to support immune function, enhance calcium absorption, and aid in the recovery of conditions like cold sores caused by the herpes simplex virus. Additionally, DL-Lysine is employed in cosmetic products for its role in collagen production, contributing to skin repair and anti-aging benefits. Its versatility makes it a valuable component in both health and industrial applications.