5-HTP (L-5-Hydroxytryptophan) is a substance produced by the body during the conversion of the essential amino acid tryptophan to serotonin, a brain chemical implicated in positive emotions and overall well-being. Research has revealed that 5-HTP may support healthy levels of serotonin in the human body. Additionally, serotonin has been linked to the production of melatonin and the regulation of sleep cycles. Serene Science® 5-HTP is sourced from the seeds of the African plant Griffonia simplicifolia.*