Supports Relaxation Pharmaceutical Grade (USP) Encourages Positive Mood Promotes Restful Sleep* Vegetarian Formula 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.
Learn what other customers say about this product
Herbal Supplements Participant in the Amazon Services LLC Associates Program,
an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com, Endless.com,
MYHABIT.com, SmallParts.com, or AmazonWireless.com. Amazon, the Amazon logo,
AmazonSupply, and the AmazonSupply logo are trademarks of Amazon.com, Inc. or its affiliates.