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Updated: Jun 10, 2026

Multiplex Therapeutic Drug Monitoring by Isotope-dilution HPLC-MS/MS of Antibiotics in Critical Illnesses
11:17

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Pharmacokinetic evaluation of piperacillin-tazobactam

Yoshiro Hayashi1, Jason A Roberts, David L Paterson

  • 1University of Queensland Centre for Clinical Research, Brisbane, Australia.

Expert Opinion on Drug Metabolism & Toxicology
|July 20, 2010
PubMed
Abstract

Insights

Understanding piperacillin-tazobactam pharmacokinetics (PK) and pharmacodynamics (PD) is crucial for optimizing treatment of severe infections. Tailoring dosing regimens based on PK/PD can improve clinical success and combat rising bacterial resistance.

Area of Science:

  • Pharmacology
  • Infectious Diseases
  • Clinical Pharmacy

Background:

  • Piperacillin-tazobactam is a vital intravenous antibiotic for moderate to severe bacterial infections.
  • Its broad-spectrum activity includes Pseudomonas aeruginosa, but its pharmacokinetic profile is variable.
  • Altered pharmacokinetics (PK) necessitates careful consideration in diverse patient populations.

Purpose of the Study:

  • To critically review the pharmacokinetics (PK) of piperacillin-tazobactam across various patient groups.
  • To discuss the pharmacodynamics (PD) of piperacillin-tazobactam.
  • To highlight strategies for optimizing antibiotic dosing.

Main Methods:

  • Comprehensive literature review of piperacillin-tazobactam PK and PD.
  • Analysis of factors influencing PK variability.
  • Discussion of dosing strategies and their impact on clinical outcomes.

Main Results:

  • Emphasizes the need for appropriate dosing due to increasing bacterial resistance, including Pseudomonas aeruginosa.
  • Explains the PK/PD relationship to guide dosing for improved patient success.
  • Describes alternative dosing methods like extended or continuous infusion for enhanced target attainment.

Conclusions:

  • Knowledge of piperacillin-tazobactam PK and PD is essential for effective treatment.
  • Optimizing dosing regimens can lead to better clinical outcomes.
  • Individualized therapy based on PK/PD principles is key to successful treatment.

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