The U.S. Food and Drug Administration needs to improve its oversight of vitamins and other dietary supplements as reports of consumers experiencing side effects continue to rise, a government report concluded. The FDA must be given additional power to require more information from supplement manufacturers each year, including an updated list of all products sold, the Government Accountability Office said in its findings released on Monday. Agency officials also should better educate consumers as well as offer the industry advice about using new ingredients and marketing their products, the GAO said.