Ampicillin sulbactam

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Ampicillin/Sulbactam
UNASYN® FDA Package Insert
Description
Clinical Pharmacology
Microbiology
Indications and Usage
Contraindications
Warnings
Precautions
Adverse Reactions
Overdosage
Clinical Studies
Dosage and Administration
Compatibility, Reconstitution, and Stability
Directions For Use
How Supplied
Other Size Packages Available
Labels and Packages

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

Ampicillin/sulbactam, the combination of ampicillin with sulbactam (an irreversible beta-lactamase inhibitor), has an antimicrobial spectrum similar to that of amoxicillin-clavulanate that includes methicillin-sensitive strains of Staphylococcus aureus, Enterobacteriaceae (but not resistant strains of Escherichia coli or Pseudomonas aeruginosa), and anaerobes. The agent has been used effectively to treat polymicrobial intra-abdominal and pelvic infections. It may also be used for soft tissue infections secondary to human or animal bites.[1]

Category

Aminopenicillins

US Brand Names

Unasyn®

FDA Package Insert

Description | Clinical Pharmacology | Microbiology | Indications and Usage | Contraindications | Warnings | Precautions | Adverse Reactions | Overdosage | Clinical Studies | Dosage and Administration | Compatibility, Reconstitution, and Stability | Directions For Use | How Supplied | Other Size Packages Available | Labels and Packages

Mechanisms of Action

Ampicillin inhibits bacterial cell wall synthesis by binding to penicillin-binding proteins which in turn inhibits the transpeptidation (cross-linking) of peptidoglycan. Thus, cell wall assembly is interrupted and bacteria are lyzed by autolysins and murein hydrolases. Sulbactam irreversibly inhibit plasmid-mediated beta-lactamaseswhich are frequently accountable for drug resistance. In addition, sulbactam has modest activity in vitro against strains of Acinetobacter baumannii.[2] The presence of sulbactam in the formulation extends the spectrum of ampicillin to include beta-lactamase producing strains.

References

  1. Lode, HM. (2008). "Rational antibiotic therapy and the position of ampicillin/sulbactam". Int J Antimicrob Agents. 32 (1): 10–28. doi:10.1016/j.ijantimicag.2008.02.004. PMID 18539004. Unknown parameter |month= ignored (help)
  2. Higgins, PG.; Wisplinghoff, H.; Stefanik, D.; Seifert, H. (2004). "In vitro activities of the beta-lactamase inhibitors clavulanic acid, sulbactam, and tazobactam alone or in combination with beta-lactams against epidemiologically characterized multidrug-resistant Acinetobacter baumannii strains". Antimicrob Agents Chemother. 48 (5): 1586–92. PMID 15105109. Unknown parameter |month= ignored (help)