Doctor's Best, L-Tryptophan , 500 mg, 90 Veggie Caps

Science-Based Nutrition™Helps Promote Normal Restful Sleep, Healthy Mood and BehaviorDietary SupplementNon-GMO / Gluten-Free / Soy Free / Vegan L-Tryptophan provides this essential amino acid (protein building block) that is not synthesized by the body and must be obtained in the diet or supplementation. It is also essential in the production of niacin, which is then metabolized into serotonin and melatonin in the brain. These neurotransmitters exert a calming effect and encourage better cognitive focus, a positive mood, and restful sleep. Helps exert a calming effectHelps encourage better cognitive focus, a positive mood, and restful sleep