Antioxidant-Rich Blueberries (image) University of South Florida (USF Health) Caption One of the main ingredients of the patented nutritional supplement, called NT-020, is extracted from blueberries. Credit © University of South Florida Usage Restrictions Please use appropriate caption. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.