Original Green Black Walnut Hull Tincture (Extra Strength) by Dr. Hulda Clark, 4 ozBrand: Dr Clark Store Features: SUPPORTS A HEALTHY INTESTINAL ENVIRONMENT Supports the bodys natural defenses and discourage the proliferation of foreign organisms known to occupy the human body, bringing about a balance between body and microorganisms HIGH JUGLONE CONTENT The immature hulls have a higher juglone concentration than mature brown hulls. Our Tincture is made from the Highly Potent Green Hulls of the Black Walnut Tree which contains up to