Mary’S Natural Vitamin E 400 I.U. Capsules Likely Contain Natural Vitamin E, Which Is Known As D-Α-Tocopherol. This Form Of Vitamin E Is A Potent Antioxidant That Helps Protect Against Oxidative Free Radicals And Supports Immune Function. It Also Plays A Role In Maintaining Healthy Blood Vessels And May Contribute To The Prevention Of Premature Aging Of Cells