List of β-lactam antibiotics

This is a list of common β-lactam antibiotics&mdash;both administered drugs and those not in clinical use&mdash;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.

β-lactamase-sensitive

 * Benzathine
 * benzylpenicillin (Penicillin G)
 * Benzathine penicillin G
 * Benzathine penicillin V
 * Phenoxymethylpenicillin (penicillin V)
 * Procaine penicillin
 * Pheneticillin

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

First generation (moderate spectrum)

 * Cefazolin
 * Cephalexin
 * Cephalosporin C
 * Cephalothin
 * Cefapirin

Second generation (moderate spectrum)
cefuroxime, cefaclor, cefprozil

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)
(With β-lactamase stability and enhanced activity against Gram-positive bacteria and Pseudomonas aeruginosa)


 * Cefepime
 * Cefpirome

Fifth generation* (broad spectrum)
(activity against MRSA and variably VRE. *Not universally accepted nomenclature. NO Antipseudomonal activity, mostly ceftriaxone coverage with additional MRSA and some VRE)


 * Ceftaroline, Ceftobiprole

Carbapenems and penems
(Broadest spectrum of β-lactam antibiotics)


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

Monobactams



 * Aztreonam
 * Tigemonam
 * Nocardicin A
 * Tabtoxinine β-lactam (does not inhibit penicillin-binding proteins)

β-lactamase inhibitors



 * Clavulanic acid
 * Tazobactam
 * Sulbactam
 * Avibactam