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L-Tryptophan, 90 Veggie Caps, 500mg, L Tryptophan, From Doctor's Best
Regular: $33.99You Save: 49%Online Sale Price: $17.50, 6 for $103.50, 12 for $204.00
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L-tryptophan is an essential amino acid (protein building block) in human nutrition. Essential amino acids are not synthesized by the body and must be obtained in the diet. The L-tryptophan in this product is manufactured and tested for purity according to the Japanese Pharmacopeia (JP) and the United States Pharmacopeia (USP) standards.