Cephavet Oral Suspension 250mg/5mL is a broad spectrum antibiotic specifically used to treat a wide range of infections in cats and dogs, caused by a variety of susceptible bacteria. These include skin and soft tissue infections like infected wounds, abscesses, and lacerations. Cephavet Oral Suspension 250mg/5mL is also used to treat infections of the respiratory tract and urinary tract; also, infections of the bones and joints. How does Cephavet work? Cephavet Oral Suspension 250mg/5mL contains cephalexin, a semi-synthetic, first generation cephalosporin antibiotic, belonging to a sub group of the beta lactam group of antibiotics (which include penicillins). Cephalexin in Cephavet Oral Suspension 250mg/5mL inhibits the synthesis of the peptidoglycan layer of the bacterial cell wall, which is important for the structural integrity of the bacterial cell wall.