New Approved Use for LevofloxacinAschenbrenner, Diane S. MS, RNAJN The American Journal of Nursing: September 2012 - Volume 112 - Issue 9 - p 23 doi: 10.1097/01.NAJ.0000418918.99858.32 Drug Watch Abstract Author Information The antibiotic levofloxacin (Levaquin) has been approved by the Food and Drug Administration to treat plague. The approval for this indication is based upon animal studies that found levofloxacin to be 94% effective in treating plague. Diane S. Aschenbrenner is the course coordinator for undergraduate pharmacology at Johns Hopkins University School of Nursing in Baltimore, MD. She also coordinates Drug Watch: email@example.com. © 2012 Lippincott Williams & Wilkins, Inc.