Berberin HCL Intenso, 516 mg (500 mg HCL), 120 kapsler, Vit4everBerberine HCL Berberine HCL, 516 mg (500 mg HCL). 120 capsules, Vit4ever. Description Berberine is a dietary 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 berberine