Optimum Nutrition Enteric Coated Fish Oil is a staple for serious body builders. These contain long chain fatty acids that help in heart and brain function, mainly DHA (DocosaHexAenoic) and EPA (EiscosaPentAenoic). You can get these important fatty acids from natural food like Salmon. Optimum Nutrition Enteric Coated Fish Oil is mercury free. It has no fishy after taste and is also easy to swallow because of the Enteric Coating. EPA and DHA are not made by the body and one needs them to accomplish many important metabolic functions in the body. It is essential that you consume food products like Salmon to get these Fatty Acids. Alternately you can consume Optimum Nutrition Fish oil to supplement these Fatty Acids. How to Use Consume 2-3 capsules daily, preferably 15-20 minutes after each meal. Read the information on label carefully before consuming.