Read supplement labels carefully to see not only the amount of fish oil but the amount of two omega-3 fatty acids, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). The American Heart Association recommends consuming 1 gram of EPA plus DHA daily if you have coronary heart disease, and 2 to 4 grams of EPA plus DHA daily if you need to lower your blood triglyceride levels.
Do not take fish oil supplements without consulting your doctor first. They may cause excessive bleeding in some people. Fish oil can also interact with certain medications, raising the risk of side effects.