This maybe of help?
Berberine
"Berberine is a plant alkaloid found in Hydrastis canadensis (goldenseal),
Coptis chinensis (Coptis or goldenthread), Berberis aquifolium
(Oregon grape), Berberis vulgaris (barberry), and Berberis
aristata (tree turmeric). It has a long history of medicinal use in...