Igen Non-GMO Tested Norwegian Fish Oil Concentrate Freshness & Potency - Purity Guaranteed Dietary Supplement Brain Function Vision Support Joint Health Friend Of The Sea IFOS Gluten-Free No Artificial Preservatives An FDA Regulated Facility Carlson Providing the finest Norwegian Omega-3s Since 1982. Super DHA Gems provide the beneficial omega-3 DHA, which plays an important role in vision health. DHA is prevalent in the retina, and the cells that make vision possible have more DHA than any other cells in our body. Provide optimal support for healthy eyes and vision with Super DHA Gems. Purity Guaranteed: This product is regularly tested by independent FDA registered laboratories. It has been determined to be fresh and fully potent (per AOCS international protocols) and is free of detrimental levels of mercury, cadmium, lead, PCBs and 28 other contaminants.