Established 1971 Third Party Tested Certified Gluten-Free From Cod Liver Oil Supports Immune, Eye and Bone Health Dietary Supplement — Our Pledge of Integrity — Authenticity Cleanliness Freshness Consistency Accuracy This product is sourced from cod liver oil, providing Both vitamins A and D3. As it is derived from fish liver oil it is third party tested for heavy metals such as mercury to ensure purity and safety.