L-Tryptophan is an essential amino acid
L-Tryptophan is a protein that supports healthy moods, relaxation, and restful sleep.
L-Tryptophan supports the body''s immune functions.
L-tryptophan also aids in the production of hydrochloric acid used by digestive system
L-tryptophan also converts to niacin and thus supports a healthy nervous system and circulation

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ASIN : B007SO0VM8