Baytril etc. (enrofloxacin) a fluoroquinolone antibiotic which is effective for both gram-negative and gram-positive bacteria.
Baytril etc. (enrofloxacin) is available in oral tablets, capsules, creams and injectable solutions.
A 1998 Greek study found that enrofloxacin was effective for treating Ehrlichia canis and E. platys.. "All dogs treated with enrofloxacin showed improvement in clinical and laboratory abnormalities similar to the improvement seen in dogs treated with doxycycline, which is considered to be the drug of choice for treatment of rickettsial infections."