http://www.bt.cdc.gov/DocumentsApp/Anthrax/10312001/han49.asp
Centers for Disease Control and Prevention, U.S. Department of Health and Human Services
Interim recommendations for postexposure prophylaxis to prevent inhalational anthrax after exposure to B. anthracis spores recommend ciprofloxacin or doxycycline as initial therapy in situations associated with current bioterrorism in the United States. This health advisory links to patient information on both drugs.