Nordic Naturals Omega-3D provides an excellent source of omega-3 fatty acids in their naturally existing ratios. Omega-3 fatty acids are needed daily, and must be obtained from our diet. Nordic Naturals Omega-3D is a great-tasting, fresh, and pure source of omega-3s and vitamin E, along with added vitamin D3 (cholecalciferol). Omega-3s support proper cellular flexibility and cardiovascular health.