List of β-lactam antibiotics


This is a list of common β-lactam antibiotics—both administered drugs and those not in clinical use—organized by structural class. Antibiotics are listed alphabetically within their class or subclass by their nonproprietary name. If an antibiotic is a combination drug, both ingredients will be listed.

Penams

Narrow-spectrum

β-lactamase-sensitive


β-lactamase-resistant


  • Cloxacillin
  • Dicloxacillin
  • Flucloxacillin
  • Methicillin
  • Nafcillin
  • Oxacillin
  • Temocillin

Broad spectrum


  • Amoxicillin
  • Ampicillin

Extended spectrum (Antipseudomonal)


  • Mecillinam
  • Piperacillin
  • Carbenicillin
  • Ticarcillin

Carboxypenicillins


  • Carbenicillin
  • Ticarcillin

Ureidopenicillins


  • Azlocillin
  • Mezlocillin
  • Piperacillin

Cephems

First generation (moderate spectrum)


  • Cefazolin
  • Cephalexin
  • Cephalosporin C
  • Cephalothin
  • Cefapirin

Second generation (moderate spectrum)

With anti-''Haemophilus'' activity


  • Cefaclor
  • Cefamandole
  • Cefuroxime

With anti-anaerobic activity


  • Cefotetan
  • Cefoxitin

Third generation (broad spectrum)


  • Cefixime
  • Cefotaxime
  • Cefpodoxime
  • Ceftazidime
  • Ceftriaxone
  • Cefdinir

Fourth generation (broad spectrum)


  • Cefepime
  • Cefpirome

Fifth generation* (broad spectrum)


  • Ceftaroline

Carbapenems and penems


  • Biapenem
  • Doripenem
  • Ertapenem
  • Faropenem
  • Imipenem
  • Meropenem
  • Panipenem
  • Razupenem
  • Tebipenem
  • Thienamycin

Monobactams


  • Aztreonam
  • Tigemonam
  • Nocardicin A
  • Tabtoxinine β-lactam

β-lactamase inhibitors


  • Clavulanic acid
  • Tazobactam
  • Sulbactam
  • Avibactam