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Dietary SupplementRecent research has demonstrated that gamma-tocopherol the main dietary source of vitamin E has a very important role in supporting health. Gamma-Tocopherol is a more effective antioxidant than alpha-tocopherol and may be an important factor for a healthy cardiovascular system. It also inhibits the COX-2 enzyme according to in vitro tests. Research indicates that a ratio of gamma-to alpha-tocopherol greater than 1:1 increases levels of both tocopherols in the body and that alpha-tocopherol alone may not be adequate to combat oxidative stress. Source Naturals Gamma E 400 offers a 3:1 gamma-to alpha-tocopherol ratio (190 IU equals 126 mg) and also contains tocotrienols from palm fruit which provides high concentrations of all four tocotrienols: alpha beta gamma and delta. Sesame seed oil rich in gamma-tocopherol is used as the base.