NOW - L-Tryptophan featured 17 oz/min) 90 g/min (3

17 oz/min) 90 g/min (3

autoimmune disorders and progressive systemic diseases such as tuberculosis

and can work to help improve lung function

abdominal cramping

NOW - L-Tryptophan featured 17 oz/min) 90 g/min (3Info: 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