The essential amino acid L-tryptophan helps 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, a healthy nervous system, the metabolism of food, and the production of hydrochloric acid for the digestive system. Source Naturals L-TRYPTOPHAN is extremely pure and is regularly tested to ensure the highest standards of quality.

Ingredients: L-Tryptophan 1.5 g; Vitamin B-6 (from 13 mg of pyridoxal-5-phosphate [coenzymated]) 9 mg; Calcium 60 mg

Other Ingredients: Dibasic calcium phosphate, stearic acid, modified cellulose gum, and colloidal silicon dioxide