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The essential amino acid L-tryptophan may support relaxation, restful sleep, and feeling better. It plays a part in the synthesis of both melatonin and serotonin, hormones involved with mood and stress response. L-Tryptophan also supports immune functions because it is the body’s precursor to the kynurenines that regulate immunity. If needed, L-tryptophan converts to niacin in the body, which supports circulation, healthy nervous system, metabolism of food, and production of hydrochloric acid for the digestive system. Source Naturals L-TRYPTOPHAN is pure and is regularly tested to ensure the highest standards of quality. |