Human: nutritional supplement, antioxidant. Tryptophane is the precursor of 5-hydroxytryptamine which is an important neurotransmitter of human body; it is also one of human essential amino acids; it is applied in nutrition supplements for pregnant woman and infant specific milk power; it is used as a curative of aniacinosis (pellagra); it's used as a tranquilizer to adjust energetic rhythm and improve sleeping. .
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