H. dulcis contains a variety of biologically active compounds (antioxidants, flavonoids) including saponin derivatives, dammarane-type triterpene, hodulosides, and flavonoids hovenodulinol, hovenitins I, II and III, -catechin,(+)-afzelechin, dihydrokaempferol..Quercetin, Taxifolin, Myricetin, Ampelopsin( dihydromyricetin, DHM). *(2)