Omega-3 fatty acids are considered essential fatty acids and are necessary for normal growth, healthy skin, arteries, nerves, and metabolism. Fish oils are excellent sources of Omega-3 fatty acids. Omega-3 fatty acids in fish oil are highly unsaturated and may easily undergo oxidation. The vitamin E present in Optimum Omega has antioxidant properties that help prevent the pro-oxidant effects of fish oil, and also provides nutritional benefit.*