Pneumonia, UTI, endometritis & peritonitis, skin structure infections 500 mg IV 8 hrly. Nosocomial pneumonia, presumed infection in neutropaenic patients, septicaemia 1 g IV 8 hrly. Meningitis 2 g 8 hrly. Childn >3 mth & up to 12 yr 10-20 mg/kg 8 hrly depending on type & severity of infection.