Natural vitamin E an effective antioxidant. The natural blend of vitamin E is more effective as an antioxidant, when compared to the synthetic form. Vitamin E is a fat-soluble vitamin and a chief antioxidant. The term "Vitamin E" refers to a family of eight related, lipid-soluble, antioxidant compounds widely distributed in plants. The tocopherol and tocotrienol subfamilies are each composed of alpha, beta, gamma and delta, and all possess unique biological effects. Different ratios of these compounds are found in anatomically different parts of a plant. For example, the green parts of a plant contain mostly alpha tocopherol and the seed germ and bran contain mostly tocotrienols. Natural vitamin E is an essential vitamin which supports the immune system, and promotes healthy cardiovascular function. It may also help maintain healthy brain cells, and most aspects of a healthy body. Did You Know? All NSI supplements are packaged in HDPE (High Density Polyethylene) bottles. These bottles keep moisture vapor out, protecting the freshness and integrity of their contents, and are 400% more effective compared other brands currently using PET (Polyethylene Terephthalate) bottles. HDPE bottles do not break as glass can and are also recyclable so we urge you to please recycle them.