L-Tryptophan, an essential amino acid, is also known as α-aminoindolylpropionic acid. It is also widely used in dietary supplements, and it can be combined with lysine, methionine and threonine for enhanced amino acids.

L-Tryptophan is one of the functional amino acids that are associated with growth, reproduction, maintenance and immunity. It is necessary for normal growth in infants and for nitrogen balance in adults, L-Tryptophan can be used for depression, anxiety, sleep apnea, premenstrual syndrome and many other problems. it can also be used in managing pain tolerance and managing weight.

1. It is an important nutrient.
2. It takes part in the renewal of animal blood plasma protein in the body.
3. It helps nicotinic acid and the synthesis of hemoglobin.
4. It can significantly increase antibody in pregnant animals’ baby.
5. It can promote lactation of cows and sows.
6. It is used as control agent of pellagra.

1.Applied in food field.
2.Applied in health product field.
3.Applied in pharmaceutical field.
4.Applied in cosmetics field.
5.Applied in beverage field.