5-HTP, the intermediate metabolite between the amino acid L-tryptophan and serotonin, is extracted from the bean of an African plant (Griffonia simplicifolia)

INGREDIENTS: 

Supplement Facts
Serving Size: 1 Capsule
Servings per Container: 0
Amount Per Serving % Daily Value
5-HTP (5-hydroxytrytophan) (from Griffonia simplicifolia Extract) (Seed) 100 mg *
*Daily value not established.
Other Ingredients: Rice flour and cellulose (capsule).

Take 1 capsule daily preferably on an empty stomach at bedtime.