19 Aug 2019 --- Prescription omega 3 fatty acid medication reduces triglyceride levels by 20 to 30 percent among the majority of people who require treatment for high levels of these fats, which elevate heart disease risk. This is according to a science advisory from the American Heart Association (AHA). The researchers advise that high triglyceride levels should not be treated with non-prescription, non-FDA-regulated omega 3 fatty acid fish oil supplements. AHA underscores a lack of scientific research to support clinical use of omega 3 supplements to prevent heart disease in the general population.