5-HTP, an intermediary metabolite between the amino acids L-tryptophan and serotonin, is derived from the seed of an African plant called Griffonia simplicifolia. This dietary supplement is commonly used as a sleep aid, promoting a happy mood and relaxation*. 5-HTP promotes the creation of serotonin in the brain and central nervous system, which influences sleep, mood, hunger, and body temperature*. This product may exhibit natural color variations.