Used in pharmaceuticals as an essential amino acid in parenteral nutrition formulations to support protein synthesis and prevent muscle wasting in patients who cannot eat normally. Commonly added to cell culture media to promote cell growth and viability in biotechnology and research labs. Included in dietary supplements and sports nutrition products to support muscle recovery, enhance endurance, and stimulate muscle protein synthesis. Utilized in the development of peptide-based drugs due to its hydrophobic properties and role in stabilizing protein structures. Applied in animal feed to improve growth performance and feed efficiency, especially in poultry and swine production.