Another popular form of antioxidant dietary supplement is Vitamin E. This antioxidant dietary supplement works best when taken with Vitamin C as it seems that both vitamins have synergistic effect when taken in combination. Besides vitamins, antioxidant dietary supplements may be in the form of botanicals. The function of antioxidants is to destroy harmful free radicals, counteracting the damaging of tissues and in effect, treating aging or causing its retardation. Antioxidants are commonplace in nature. In fact, antioxidants are abundant in more common vitamins such as retinol or Vitamin A, ascorbic acid or Vitamin C, tocopherol or Vitamin E, and selenium. In addition, there is good evidence that bilirubin and uric acid can act as antioxidant support to help neutralize certain free radicals. Antioxidant support can be found in almost everything that we eat. More particularly, fresh fruits and vegetables are the richest sources of antioxidant support available. Perhaps due to this alarming number, much of scientific researches conducted in the US today have recently been focused on how antioxidant vitamins may reduce the risk of cardiovascular disease. Previous studies have shown that antioxidant vitamins, such as vitamin E, vitamin C, and beta carotene (a from of vitamin A), have potential health-promoting properties. Antioxidant Juice They are mostly found in fresh fruits and vegetables. We've been eating them for centuries and it's only now that scientists are beginning to discover exactly what makes them healthy for the body. Antioxidants. What exactly are they? The term is familiar to us. We hear them mentioned all the time whenever there's a new scientific study being released in the American Health Journal or some such explaining how antioxidant juice from berries can aid in liver function or how antioxidant juice from red wine is the scientific reason behind the French paradox. Fruits and vegetables it seemed contain chemical substances that act on specific, harmful molecules inside our bodies to stop them from damaging our cells. Because these substances work on oxygen by-products called free radicals, they have since come to be known as natural antioxidants. A natural antioxidant protects the body against free radicals.