* Purity Freshness - 3rd Party Tested * Large to Very Large Breed Dogs & Multi-Dog Households * Pure Omega-3 Oil Supplement * With Naturally Occurring Vitamin A * Wild Arctic Cod Liver Oil for Optimal Pet Health and Wellness * Distilled for Purity * Sustainable Fishing Nordic Naturals" exceptional quality cod liver oil is derived exclusively from wild Artic cod. Important omega-3 fatty acids, EPA and DHA, helps support healthy skin, coat, joint, heart, and the development and maintenance of the brain and eyes. All natural vitamin A helps support vision and immune function. Nordic Naturals oils are distilled for purity, and surpass the strict international standards for purity and freshness (European Pharmacopoeia and World Health Organization).