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Doctor's Best Best L-Tryptophan Powder, 50 g
Regular: $39.99You Save: 49%Online Sale Price: $20.37, 2 for $40.64
Buy With Confidence
USP Pharmaceutical Grade
Featuring Ajinomoto's TryptoPure
Suitable for Vegetarians
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.