Penicillins (see Penicillins)

Natural Penicillins

• Benzathine Penicillin
• Penicillin G (Benzylpenicillin) (see Penicillin G)
• Penicillin V
• Procaine Penicillin

Penicillinase-Resistant Penicillins

• Cloxacillin
• Dicloxacillin (see Dicloxacillin)
• Methicillin (see Methicillin)
• Nafcillin (see Nafcillin)
• Oxacillin (see Oxacillin)

Aminopenicillins

• General Comments
  • Vulnerable to Inactivation by β-Lactamases
• Amoxicillin (see Amoxicillin): due to potential inactivation by β-lactamases, usually used in a formulation with a β-lactamase inhibitor (like clavulanic acid)
  • Amoxicillin/Amoxicillin-Clavulanic Acid (Augmentin) (see Amoxicillin-Clavulanic Acid)
• Ampicillin (see Ampicillin): due to potential inactivation by β-lactamases, usually used in a formulation with a β-lactamase inhibitor (like sulbactam)
  • Ampicillin/Ampicillin-Sulbactam (Unasyn) (see Ampicillin-Sulbactam)
• Bacampicillin

Extended-Spectrum/Anti-Pseudomonal Penicillins

• General Comments
  • Have Activity Against Many Gram-Negative Organisms of the Enterobacteriaceae Family (Including Pseudomonas Aeruginosa)
  • Vulnerable to inactivation by β-lactamases
• Acylaminopenicillins
  • Azlocillin
  • Mezlocillin
  • Piperacillin: due to potential inactivation by β-lactamases, usually used in a formulation with a β-lactamase inhibitor (like tazobactam)
    • Piperacillin/Piperacillin-Tazobactam (Zosyn) (see Piperacillin-Tazobactam)
• Alpha-Carboxypenicillins
  • Carbenicillin
  • Ticarcillin: due to potential inactivation by β-lactamases, usually used in a formulation with a β-lactamase inhibitor (like clavulanic acid)
    • Ticarcillin/Ticarcillin-Clavulanic Acid (Timentin) (see Ticarcillin-Clavulanic Acid)

Cephalosporins (see Cephalosporins)

First Generation

• Cefadroxil (Duricef) (see Cefadroxil)
• Cefazolin (Ancef, Kefzol) (see Cefazolin)
• Cephalexin (Keflex) (see Cephalexin)
• Cephradrine (Velosef) (see Cephradrine)

Second Generation

• Cefaclor (Ceclor, Raniclor) (see Cefaclor)
• Cefotetan (Cefotan) (see Cefotetan)
• Cefotiam (see Cefotiam)
• Cefoxitin (Mefoxin) (see Cefoxitin)
• Cefprozil (Cefzil) (see Cefprozil)
• Cefuroxime (Zinacef, Ceftin) (see Cefuroxime)
• Loracarbef (Lorabid) (see Loracarbef)

Third Generation

• Cefdinir (Omnicef) (see Cefdinir)
• Cefditoren (Sprectacef) (see Cefditoren)
• Cefixime (Suprax) (see Cefixime)
• Cefoperazone (Cefobid) (see Cefoperazone)
• Cefotaxime (Claforan) (see Cefotaxime)
• Cefpodoxime (Vantin) (see Cefpodoxime)
• Ceftazidime (Fortaz, Tazicef, Ceptaz) (see Ceftazidime)
• Ceftibuten (Cedax) (see Ceftibuten)
• Ceftizoxime (Cefizox) (see Ceftizoxime)
• Ceftriaxone (see Ceftriaxone)

Fourth Generation

• Cefepime (Maxipime) (see Cefepime)

Fifth Generation

• Ceftaroline (Teflaro, Zinfloro) (see Ceftaroline)
• Ceftobiprole (Zeftera, Zevtera) (see Ceftobiprole)

Carbapenems (see Carbapenems)

• Doripenem (Doribax) (see Doripenem)
• Ertapenem (see Ertapenem)
• Imipenem (see Imipenem)
• Meropenem (see Meropenem)

Monobactams

• Aztreonam (Azactam) (see Aztreonam)
  • Note that Aztreonam Has a Different Target within the Bacterial Cell Wall, as Compared to the Above β-Lactam Antibiotics