L-Tryptophan 500 mg - 60 Vcaps®
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L-Tryptophan is an essential amino acid important in human nutrition for the synthesis of melatonin and serotonin, hormones regulating 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. NOW® L-Tryptophan is pharmaceutically pure - every lot is tested to be free of Peak E and microbial contamination.
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