Several drug companies are accused of concealing information from the Food and Drug Administration.一些制药公司被指控向食品和药物管理局隐瞒信息。The drug has been approved by the U.S. Food and Drug Administration.这种药物获得了美国食品和药物管理局的批准。The vaccine has been licensed by the US Food and Drug Administration.这种疫苗已经得到美国食品与药物管理局的批准。