Double Strength L-Tryptophan

L-Tryptophan helps support relaxation, sleep, positive mood and immune function. L-Tryptophan is important in human nutrition for the synthesis of melatonin and serotonin. As an essential amino acid, it is not synthesized by the body and must be obtained from the diet. NOW Double Strength L-Tryptophan is tested to be free of Peak E and microbial contamination.