L-トリプトファン , 500 mg, 60 カプセル
L-Tryptophan is an essential amino acid important in human nutrition for the synthesis of melatonin and serotonin, hormones regulating mood and stress response.** L-Tryptophan helps support relaxation, sleep, positive mood and immune function.** As an essential amino acid, it is not synthesized by the body and must be obtained from the diet. Piping Rock L-Tryptophan is pharmaceutically pure - every lot is tested to be free of Peak E and microbial contamination!