Berberine
…is a quaternary ammonium compound. Its name is derived from the genus of plants, Berberis. Berberine occurs in the roots, bark, stems, and leaves of Berberis vulgaris (barberry), Berberis aristata (tree turmeric), Mahonia aquifolium (Oregon grape), and Hydrastis canadensis (goldenseal). Due to their yellow pigmentation…