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Active ingredient: Oxacillin - Brands, Medical Use, Clinical Data

Brands, Medical Use, Clinical Data

Drug Category

  • Anti-Bacterial Agents
  • Penicillins

Dosage Forms

  • Not Available

Brands / Synonyms

Bactocill; Bactocill In Plastic Container; Clossacillina [DCIT]; Cloxacilina [INN-Spanish]; Cloxacillin; Cloxacillin Sodium; Cloxacilline [INN-French]; Cloxacillinum [INN-Latin]; Cloxapen; CXN; Dicloxacillin Sodium; Dycill; Dynapen; Methocillin S; Oxacillin; Oxacillin Sodium; Pathocil; Prostaphlin; Syntarpen; Tegopen


Used in resistant staphylococci infections


Oxacillin is a penicillin beta-lactam antibiotic used in the treatment of bacterial infections caused by susceptible, usually gram-positive, organisms. The name "penicillin" can either refer to several variants of penicillin available, or to the group of antibiotics derived from the penicillins. Oxacillin has in vitro activity against gram-positive and gram-negative aerobic and anaerobic bacteria. The bactericidal activity of Oxacillin results from the inhibition of cell wall synthesis and is mediated through Oxacillin binding to penicillin binding proteins (PBPs). Oxacillin is stable against hydrolysis by a variety of beta-lactamases, including penicillinases, and cephalosporinases and extended spectrum beta-lactamases.

Mechanism of Action

By binding to specific penicillin-binding proteins (PBPs) located inside the bacterial cell wall, Oxacillin inhibits the third and last stage of bacterial cell wall synthesis. Cell lysis is then mediated by bacterial cell wall autolytic enzymes such as autolysins; it is possible that Oxacillin interferes with an autolysin inhibitor.


Not Available


Not Available

Biotrnasformation / Drug Metabolism

Not Available


A history of a hypersensitivity (anaphylactic) reaction to any penicillin is a contraindication.

Drug Interactions

Tetracycline, a bacteriostatic antibiotic, may antagonize the bactericidal effect of penicillin and concurrent use of these drugs should be avoided.

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