Milk Thistle is a concentrated herb (equivalent to 560 mg of whole herb) with valuable antioxidant properties that contribute to overall health and well-being.† Milk Thistle contains a plant compound called silymarin, which helps maintain healthy liver function by supporting the structure of the outer cell membrane of liver cells.† Liver Health† Antioxidant Support† For additional formula information, view the Supplement Facts panel. All Windmill supplements are manufactured in the United States in an FDA-inspected facility whose cGMP (current Good Manufacturing Practice) are independently verified by qualified certification organizations. Non GMO Gluten Free Vegan