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Healthwise L-Tryptophan is 100% pure pharmaceutical grade amino acid. This essential amino acid is found in all animal proteins and is often lacking in a vegan diet. L-Tryptophan and the conversion to 5 HTP are known precursors to enhance the neurotransmitter Serotonin, manufactured in the brain and GI tract. L-Tryptophan absorption can be boosted by supplementation with B group vitamins.


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