L-Tryptophan is widely used in the pharmaceutical industry as a precursor for the synthesis of serotonin, a neurotransmitter that plays a crucial role in mood regulation. It is often incorporated into dietary supplements aimed at improving mental health, reducing anxiety, and promoting better sleep. In the food industry, it is added to products designed to enhance nutritional value, particularly in protein-rich foods and beverages. Additionally, L-Tryptophan is utilized in animal feed to support growth and overall health in livestock. Its role in the production of niacin also makes it important for addressing vitamin B3 deficiencies.