FDA sent Greenbrier International Inc. (Dollar Tree) a warning letter for selling potentially harmful over-the-counter (OTC) foreign drugs, some of which were imported from China. The Nov. 14 warning letter came after FDA drug center chief Janet Woodcock recently urged Congress to address gaps in oversight of foreign pharmaceutical ingredients used in prescription and OTC drugs sold in the United States. The warning letter lists drugs supplied by Dollar Tree for which manufacturers received FDA warning letters in 2018, as...