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OPRA Therapeutics and Patient Care QUESTION #3869
Question 1
Which penicillin retains its antibacterial activity in the presence of the beta-lactamase enzyme penicillinase?
  • Amoxicillin
  • Flucloxacillin✔️
  • Phenoxymethylpenicillin
  • Ticarcillin
Correct Answer Explanation
Flucloxacillin is a penicillinase-resistant penicillin due to its bulky side chain that prevents the beta-lactamase enzyme from accessing the beta-lactam ring.