SOURCE NATURALS - Serene Science L-Tryptophan 500 mg - 60 Capsules Vitamin D the enzyme essential for maintaining

the enzyme essential for maintaining normal glucose metabolic pathways

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SOURCE NATURALS - Serene Science L-Tryptophan 500 mg - 60 Capsules Vitamin D the enzyme essential for maintainingDESCRIPTION Positive Mood The essential amino acid L tryptophan is the precursor for the synthesis of serotonin, a hormone and a neurotransmitter involved with mood and stress response and sleep wake cycles. It helps support relaxation, restful sleep, and positive mood. If needed, l tryptophan converts to niacin in the body, an important B vitamin. Source Naturals L Tryptophan is extremely pure and is regularly tested to ensure the highest standards