Apigenin, found in many plants, is a natural product belonging to the flavone class that is the aglycone of several naturally-occurring glycosides. Apigenin acts as a monoamine transporter activator, one of the few chemicals demonstrated to possess this property. Apigenin is a ligand for central benzodiazepine receptors that competitively inhibited the binding of flunitrazepam with a Ki of 4μM, exerting anxiolytic and slight sedative effects.