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Drug
Dosage
Cephalosporins
Cephalexin
20–30 mg/kg, bid, PO
Cephadroxil
Dogs: 20 mg/kg, bid, PO
Cats: 20 mg/kg/day, PO
Cefaclor
10–25 mg/kg, bid, PO
Cefovecin
8 mg/kg, SC, every 14 days
Cefpodoxime
5–10 mg/kg/day, PO
Penicillins
Amoxicillin-clavulanate
13.75 mg/kg, bid, PO
Oxacillin
22 mg/kg, tid, PO
Fluoroquinolones
Enrofloxacin
5 mg/kg/day, PO
Marbofloxacin
2 mg/kg/day, PO
Orbifloxacin
2.5 mg/kg/day, PO
Difloxacin
Pradofloxacin
3 mg/kg/day, PO
Sulfonamides
Trimethoprim-sulfadiazine
15–30 mg/kg, bid, PO
Trimethoprim-sulfamethoxazole
Macrolides
Erythromycin
15–30 mg/kg, tid, PO
Clindamycin
Dogs: 10–20 mg/kg, bid, PO
Cats: 12.5–25 mg/kg, bid, PO
Lincomycin
10–20 mg/kg, bid, PO
Azithromycin
10 mg/kg/day, PO
Others
Chloramphenicol
50 mg/kg, tid, PO
Rifampin
5–10 mg/kg, once or twice daily, PO
