Supports production of serotonin, which regulates mood, and is a precursor to melatonin Supports mental and emotional wellbeing, helping to promote a healthy, balanced mood From Griffonia simplicifolia seed extract Extra strength potency Get high-powered support for your mental ...Supports production of serotonin, which regulates mood, and is a precursor to melatonin Supports mental and emotional wellbeing, helping to promote a healthy, balanced mood From Griffonia simplicifolia seed extract Extra strength potency Get high-powered support for your mental and emotional well-being with Swanson Ultra Extra- Strength 5-HTP. A unique compound extracted from griffonia beans, 5-HTP works within the body to promote healthy levels of serotonin, a hormone vital to healthy moods and sleep patterns. Nutritional Information Serving Size 1 Capsule Amount Per Serving % Daily Value L-5 HTP (L-5 hydroxytryptophan) (Griffonia simplicifolia seed extract) 100 mg Daily Value not established.