by Dr. William Chamberlin On July 26, 2016, the United States Food and Drug Administration (FDA) issued a warning regarding the use of antibiotics in the fluoroquinolone class. These include levofloxacin (Levaquin), ciprofloxacin (Cipro), ciprofloxacin extended-release tablets, moxifloxacin (Avelox), ofloxacin and gemifloxacin (Factive). Two of these drugs (levofloxacin and ciprofloxacin) are sometimes prescribed to treat Crohn’s disease via a pathogen model (AMAT). However, the risks associated with the fluoroquinolone class of medications are serious. Because of this, I will no longer recommend the use of levofloxacin or ciprofloxacin for the treatment of Crohn’s disease, except in extreme cases where the benefits may outweigh the serious risks.