Commercially available fish oils are supplied as fatty acid triglycerides or ethyl esters and are often associated with unpleasant side effects such as nausea, flatulence, diarrhea and belching. These adverse effects limit administration of high doses of these preparations. Several studies have demonstrated the superior absorption across intestinal membranes of free fatty acids in comparison with triglycerides and ethyl esters. Epanova™ is being developed as a well-tolerated means of delivering a high concentration of marine fish oils as free fatty acids. Additionally, the gelatin coating of the capsules consists of a permeable polymer that results in a delayed release of the active compounds thus reducing the frequency of adverse events.