NOW - L-Tryptophan featured NATURIGIN leads the way in

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17 oz/min) 90 g/min (3

NOW - L-Tryptophan featured NATURIGIN leads the way inInfo: 60 Veg. Capsules L Tryptophan, an essential amino acid, is needed to produce serotonin (a neurotransmitter involved in sleep and mood), melatonin (a neurohormone, also related to sleep), and niacin (vitamin B3), all of which assist in the regulation of sleep, positive mood and immune system function. Product Notes: An Essential Amino Acid for Sleep Regulation L Tryptophan must be obtained nutritionally, as it's not made by the body, and even if