Fluoroquinolones are the third most commonly prescribed family of antibiotics in the U.S. for adults, and, in my opinion, the second most fun to say (right behind aminoglycosides). Fluoroquinolones include levofloxacin (Levaquin), ciprofloxacin (Cipro), moxifloxacin (Avelox), ofloxacin, and delafloxacin. Their popularity is well earned; they’re very effective at treating certain bacterial infections. But since their discovery in the late 1970s, increasing concern has been raised about their ...