Oregon Grape Constituents: "The primary bioactive agents in Oregon grape are the many isoquinoline alkaloids. Beside the main yellow alkaloid berberine, the roots and foliage contain berbamine, oxayacanthine and oxyberberine. The roots have others including canadine, mahonine, magnoflorine, and jatrorrhizine, depending on species and other esoteric factors." Ref. B p.193, " Alkaloids comprising mainly berberine, berbamine and oxyacanthine." L. Ref. D p.218 |