http://medicalxpress.com/ en-us Medical Xpress internet news portal provides the latest news on Health and Medicine. Quality control is a key factor in making sure green tea dietary supplement products pack the same antioxidant punch as green tea leaves used for brewing beverages, according to U.S. Department of Agriculture (USDA) scientists. http://medicalxpress.com/news/2012-05-green-tea-supplements.html Health Tue, 01 May 2012 03:46:54 EST news255062668