L-Tryptophan is an essential amino acid and the metabolic precursor to serotonin, melatonin, and niacin (vitamin B3). It is the least abundant essential amino acid in most dietary proteins, making supplementation important for specific nutritional applications.
In the supplement industry, L-Tryptophan is widely used for mood support, sleep aid, and stress management formulations. It is produced through microbial fermentation using genetically optimized bacterial strains for high-yield tryptophan biosynthesis. L-Tryptophan's role in animal nutrition has also grown significantly, as it is recognized as the second limiting amino acid in corn-soybean meal diets for swine.