L-Tryptophan is an amino acid and essential in human nutrition. This means that it cannot be synthesized by the organism and therefore must be part of its diet. Amino Acids function as building blocks in protein biosynthesis. L-Tryptophan is also known as a direct precursor for serotonin (a neurotransmitter), melatonin (a neurohormone).
Take 1 or 2 capsules daily, or as directed by a health care practicioner. For optimum absorption, take separately from protein-containing foods and dietary supplements containing protein or amino acids. Store in a cool, dry place.