Berberine, 500 mg, 120 kapsler, Alzuro LabsAlzuro Labs Berberine Berberine (Berberis aristata), 500 mg. 120 capsules, Alzuro Labs. Description Berberine is a food supplement, the primary bioactive ingredient in various plants such as Berberis vulgaris (barberry) and Phellodendron amurense (Amur cork tree). It comes from the roots, stems, and bark of various plants. According to inscriptions found on clay tablets in the library of the Assyrian emperor Ashurbanipal, one of the earliest uses of