A 100% Pure NKO supplement to support joint & cognitive functions and cardiovascular health* NKO Krill Oil is derived from Antarctic Krill, which naturally contain a unique blend of omega-3 and omega-6 fatty acids, phospholipids and choline, as well the antioxidants: Vitamins A and E and astaxanthin. NKO Krill Oil is a supplement that supports healthy cardiovascular function, joint and skin health, mental alertness, and menstrual comfort.*