Which of the following doesn't have any effect on pseudomonas?
Nafcillin is a narrow-spectrum bactericidal antibiotic agent of the penicillin class. It is useful for susceptible infections due to penicillinase-producing staphylococci. Piperacillin and Mezlocillin also acts on pseudomonas.
Ticaracillin
Carbenicillin
Azlocillin
Naficillin