Omega-3 acid ethyl esters are ethyl esters of the omega-3 fatty acids eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) found in fish oil. Together with dietary changes, they are used to treat high blood triglycerides which may reduce the risk of pancreatitis. They are generally less preferred than statins and use is not recommended by NHS Scotland as the evidence does not support a decreased risk of heart disease. Omega-3 acid ethyl esters are taken by mouth.