<prompt> Which one of the following drugs is an antipseudomonal penicillin?CephalexinCloxacillinPieperacillinDicloxacillin  <response>: This antipseudomonal penicillin is about 8 times more active than carbenicillin. It has good activity against Klebsiella and is used mainly in neutropenicimmunocompromised patients having serious gram-negative infections, and in burns. ESSENTIALS OF MEDICAL PHARMACOLOGY page no 724 