Enrofloxacin Market Enrofloxacin, or 1-Cyclopropyl-6-fluoro-7-(4-ethyl-1-piperazinyl)-1,4-dihydro-4-oxo-3-quinoline carboxylic acid, is a fluoroquinolone antibiotic used to treat bacterial infections. Baytril, the trade name of enrofloxacin, is indicated for the control, in chickens, of mortality associated with Escherichia coli. The U.S FDA approved the use of enrofloxacin in 1996 to treat certain bacterial infections in poultry. The drug has low minimal inhibitory concentrations (MICs) and favorable pharmacokinetic properties. It has been approved by the European Food Safety Authority for the treatment of bacterial infections in cattle. It is also an effective antibiotic that is well tolerated by animals. Its mechanism of action is distinct and it shows profound bactericidal activity. It has not been used for humans in this capacity. There is a high variation of bioavailability after oral administration of enrofloxacin between polygastric and monogastric animals ...