5-Hydroxytryptophan, or 5-HTP, is the direct precursor to serotonin, an important neurotransmitter that participates in the regulation of emotional moods, sleep/wake cycles, nerve thresholds, and appetite. In addition to increasing serotonin levels, 5-HTP supports the levels of endorphins and other neurotransmitters that may be low in some clinical situations. Serotonin is an important initiator of sleep, and 5-HTP has been studied for many positive benefits with sleeplessness. Research also suggests serotonin levels may promote early satiety for appetite regulation.*Serving Size:1 CapsuleServings Per Container:30 Amount Per Serving 5-Hydroxytryptophan 100mg Other ingredients: vegetarian capsule, rice powder Suggested use for adults: One capsule daily taken before a meal or at bedtime, or as directed by your health care practitioner. This product is intended for professional use and is manufactured under strict quality control.Caution: This product should not be combined with antidepressant medication. Not appropriate for pregnant or lactating women.Keep in a cool, dry place, tightly capped.