L-Tryptophan – 500 mg – 240 Vegan Tablets Tryptophan is a proteinogenic? -amino acid with an aromatic indole ring system. Together with phenylalanine, tyrosine and histidine, tryptophan is therefore one of the aromatic amino acids. The human organism can not produce this essential amino acid itself and thus relies on the supply of food. Properties of the dietary supplement: 500 mg L-tryptophan per vegan tablet The raw materials are tested in the laboratory for purity, quality and active ingredient content Tryptophan is the precursor of serotonin, melatonin and niacin Tryptophan is an essential amino acid L-tryptophan is the precursor of serotonin, melatonin and niacin and thus has vital importance for the human body. Regular physical activity and a controlled diet are important prerequisites for your personal success!