Horehound Constituents: "Marrubiin, marrobiol, marrubenol, peregrinol, and vulgerol (diterpenes),the lactoyl flavonoids luteolin and apigenin; the flaviniods vicenin II, vitexin,luteolin 7- glucoside, apigenin 7-glucoside, and chrysoeriol, betonicine, choline,volatile oils, tannins and so forth." Ref. B p.148, "Tannins; volatile oil, comprising marrubiol; mucilage; resin; sterols; a bitter principle, marrubin; vitamin C." D p.219 |