Support for Serenity. Mind, mood, sleep, depression. This natural amino acid, called Serotone 5HTP, may help maintain a balanced outlook and a relaxed approach to life. It works by increasing the level of serotonin in the brain, a substance which helps modulate mood and sleep. Serotone provides the amino acid 5 HTP, the natural precursor of serotin from a West African herb, Griffonia simplicifolia, plus the vitamins and minerals needed to convert it into serotonin. Best taken before bed.