The primary active ingredient of vitamin E. Vitamin E is a potent antioxidant. Some studies have shown that people who take antioxidants regularly and long term are less likely to develop many health problems typically related to aging and deterioration, from heart disease and cancer to conditions such as Parkinson’s disease. This has led to speculation that high doses of antioxidants such as vitamin E could also play a role in treatment for such conditions. Clinical studies have failed to support this speculation. One of the most extensive was the 10-year multicenter DATATOP (Deprenyl and Tocopherol Antioxidative Therapy for Parkinson’s Disease) study. In this and other studies, alpha-tocopherol had no effect on the course of Parkinson’s disease.
It is possible that alpha-tocopherol and other antioxidants have a preventive effect for conditions such as Parkinson’s disease, as some studies suggest. Yet once the disease develops, these substances have no effect in terms of slowing the disease’s progress. They do not appear to do any harm, however, and many people take antioxidants along with conventional anti-parkinson’s MEDICATIONS.