Swanson 5-HTP works within the body to promote healthy levels of serotonin, a hormone that helps regulate mood and sleep patterns. 5-HTP supports production of serotonin, which regulates mood, and is a precursor to melatonin. It supports mental and emotional wellbeing, helping to promote a healthy, balanced mood. A great formula for daily maintenance needs, each capsule provides 50 mg of pure 5-HTP for dependable everyday supplementation.