Only seven seas pure and natural cod liver oil is ultra purified using the unique ocean gold method, a breakthrough in cod liver oil refining, that guarantees the purest product. Seven seas high strength pure cod liver oil liquid helps to maintain supple and flexible joints, fitness, health and vitality. * resistance to infections such as coughs and colds. * healthy hair, skin and nails. * good vision. * strong bones and teeth. omega-3 which contains epa and dhasupports a healthy hearthelps maintain normal visionhels maintain normal brain functionvitamin dsupports a healthy immune systemhelps mtaintain healthy bones, muscles and teethvitamin ehelps protect against free radical and oxidative damage.