Nows Sun-E supplement contains 400 IU of unesterified d-alpha tocopherol, whose antioxidant action improves the health of the cardiovascular and immune systems, ligaments and skin tissue. The d-alpha tocopherol contained in Sun-E is a form of vitamin E derived from sunflower oil. Vitamin E causes blood vessels to dilate, allowing better blood flow to the heart. It prevents arteriosclerosis because it penetrates the LDL cholesterol molecule, inhibiting destructive oxidation resulting from free radical attacks. The usefulness of vitamin E in all types of cells is a well-known fact. It protects the membranes of blood cells, the nervous system, skeletal muscles and the retina of the eye from the negative effects of free radicals.