Oregon grape root powder (Mahonia aquafolium) USA 1 pound

What the brand says

You�ll often see Oregon grape root referred to as a �berberine-containing plant�. Berberine is a chemical constituent found in several different plants that has been studied extensively. You will find studies showing berberine can lower blood glucose levels, stop infections and modulate inflammation. *These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.