Carlson Labs Norwegian Cod Liver Oil provides the finest cod liver oil from the deep, unpolluted waters near Norway. Natural Vitamin E has been added to each 1000 mg soft gel to protect the freshness of EPA & DHA, both within the softg gels and our bodies. Fish body oil, is the only major source of the polyunsaturated Omega-3's EPA and DHA. DHA and EPA are two of the most polyunsaturated fatty acids in our bodies; much more unsaturated than vegetable oils. DHA is a vital structural component of cell membranes in our brain and eyes. It supports healthy cell signaling. For those individuals who do not eat an oily fish diet, Carlson offers Omega-3's in easy-to-swallow soft gelatin capsules.This product is regularly tested (using AOAC international protocols) for freshness, potency and purity by an independent, FDA-registered laboratory and has been determined to be fresh, fully potent and free of detectable levels of mercury, cadmium, lead, PCB's and 28 other contaminants.Fish provides the important polyunsaturated omega-3's, EPA and DHA, which aid our well being by promoting cardiovascular health. For those individuals who do not eat an oily fish diet, Carlson offers a variety of Fish oil products in Liquids that are very tasty. All fish oil products are regularly tested using AOAC international protocols for potency and purity by and independent FDA Registered laboratory.