system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
One of the following is not penicillinase susceptible?
assistant
The correct answer is  Penicillinase-resistant penicillins Methicillin, Cloxacillin. ESSENTIALS OF MEDICAL PHARMACOLOGY page no.721