Source Naturals NKO Neptune Krill Oil, is a safe, long lasting alternative to other fish-based supplements without the danger of high lead or mercury levels. Beyond the lab test and theory, actual human studies of Krill Oil show that it can provide significant support to your body for maintenance and protection. Joint health, heart disease prevention, and energy production are just a few of its benefits. Krill oil is a rich source of phospholipids, essential Omega-3 fatty acids, and the antioxidant astaxanthin. Phospholipids are the fundamental building blocks for the outer layer of our cells, the cell membrane. Our cell membranes control what enters and leaves each cell and provide vital protection.When combined with Omega-3 fatty acids, phospholipids are used more effectively. Our bodies can't make Omega-3's, and fish products are some of the richest sources available. Low Omega 3 levels can lead to heart and cellular problems, while healthy levels provide protection against heart disease. Astaxanthin is an antioxidant that gives further support to cellular health by protecting membranes against free radical damage. For a high quality source of these powerful nutrients, choose Source Naturals NKO Neptune Krill Oil.