Berberine is a natural alkaloid that has been used for thousands of years by healers in both chinese and ayurvedic medicines. Health thru nutrition’s berberine hcl is manufactured in a cgmp facility in the united states and tested by ultra-high-performance liquid chromatography to ensure accurate potency levels at a minimum of 100% of the label claim – meaning you receive the benefits of all 500mg of berberine in one easy to swallow vegetarian capsule! Htn uses phytosure™ berberine, which is a certification mark of cas biosciences, llc, all rights reserved; phytosure™ is a triple verified true product, non-gmo, 100% plant guaranteed, authenticated and certified, and is an assurance of the strictest quality standards. Health thru nutrition’s berberine hcl is specially formulated to help you receive optimal results!