Ibafloxacin is a fluoroquinolone antibiotic drug used in veterinary medicine. Ibafloxacin, a fluorinated 4-quinolone, is a broad spectrum antibiotic with bactericidal action against Gram-positive and Gram-negative bacteria. Ibafloxacin is presented in the form of a tablet/oral gel containing a racemic mixture of S- and R-ibafloxacin. The antimicrobial activity of the racemate originates mainly from the S-enantiomer. Ibafloxacin was marketed under the brand name Ibaflin. Ibaflin tablets were intended for use in dogs for treatment of respiratory tract infections, urinary tract infections and dermal infections caused by ibafloxacin susceptible pathogens. Ibafloxacin, is an antibiotic belonging to the class ‘fluoroquinolones’. It works by blocking an enzyme called ‘DNA gyrase’, which is important in allowing bacteria to make copies of their DNA. This enzyme is only found in bacterial cells, and does not have a similar function in animal cells. By blocking DNA gyrase, ibafloxacin prevents the bacteria from making DNA and stops them making proteins and growing, resulting in their death.