Tryptophan is an aromatic amino acid and cannot be produced by the body itself. It is therefore an essential amino acid that must be supplied through food. For example, folic acid, magnesium and other micronutrients support normal mental functions. The “nerve vitamins” B6 and B1 are mainly involved in the nervous system. L-Tryptophan 250 also contains niacin, which helps reduce tiredness and fatigue.