Tryptophan
L-Tryptophan is an essential amino acid. Essential amino acids are not produced by the body and must be obtained in the diet. L-Tryptophan is a precursor from which the body makes serotonin.
Ingredients: L-Tryptophan, vegetable capsule (hydroxypropylmethylcellulose, purified water, dye: calcium carbonate), anticaking agents: magnesium stearate and silicon dioxide.