About this item Melatonin Production: 5-HTP is the direct metabolic precursor to serotonin and is important for the production of melatonin, a hormone secreted by the pineal gland that aids biorhythm regulation Mental Health and Sleep: 5-HTP may be useful in promoting mental health (as a precursor to serotonin) and sleep (as a precursor to melatonin) Serotonin Synthesis: 5-HTP (5-hydroxytryptophan) is an extract of griffonia simplicifolia seeds from coastal West Africa; Purity is assured by HPLC; The formula supports serotonin synthesis Convenient Veggie Caps: Take one capsule per day on an empty stomach or as directed by your qualified healthcare professional Superior Nutrition and Formulation: The goal of Jarrow Formulas is to promote optimal health with high-quality, effective, affordable, and superior formulation of dietary supplements; Our customers can be assured of purity, value, and potency