Established 1971. Certified Gluten-Free. Supports Prostate and Immune Health. Features Superior Absorption and Bioavailability. This is a Dietary Supplement. 1genâ„¢ Non-GMO Tested. Certified B Corporation. Halal. Kosher Parve. Our Pledge of Integrity: Authenticity, Cleanliness, Freshness, Consistency, Accuracy. A daily intake of zinc is needed as the body does not store it. Zinc plays a role in immune function and prostate health. In a human clinical trial, zinc picolinate was shown to have better absorption than zinc citrate and gluconate. Certified Gluten-Free by GFCO.org. No Yeast, Wheat or Corn. Certified Vegan by the AVA. No Milk, Soy or Sugar. Recyclable Packaging. No Preservatives. Manufacturing Supports Wind Power. No Artificial Colors, Flavors or Sweeteners. Kosher-Parve. Certified Halal by IFANCA.