Griffonia simplicifolia (DC.) Baill. is a plant from the Leguminosae family.
The plant, especially the seeds, contains high levels of 5-hydroxytryptophan (5-HTP) a natural aminoacid which is the precursor of serotonin synthesis in the organism. Thus extracts of the plant are used as supplements with relaxing and mood-balancing effect, as sleep aids and also as appetite controllers.