ID Board Review/Antimicrobial Therapy/Antibacterials/β-Lactams/Penicillins

Narrow Spectrum Penicillins

β-Lactamase Sensitive (First Generation)

  • Penicillin G (PenG)
  • Penicillin V (PenV)

β-Lactamase Resistant (Second Generation)

  • Cloxacillin
  • Oxacillin
  • Nafcillin

Extended Spectrum Penicillins

Aminopenicillins (Third Generation)

  • Amoxicillin
  • Ampicillin

Carboxypenicillins (Fourth Generation)

  • Ticarcillin

Ureidopenicillins (Fifth Generation)

  • Piperacillin