ACES® + Omega provides four essential antioxidants, plus omega-3s. Vitamins A, C, E, and selenium help protect our body from the harmful effects of free radicals. Selenium also serves as a vital building block for glutathione peroxidase, one of the most powerful antioxidant enzymes in our body. The beneficial omega-3s EPA and DHA promote a healthy, balanced immune response. Like all Carlson products, ACES® + Omega is tested by an FDA-registered laboratory for freshness, potency, and purity.