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# Piperacillin-Tazobactam
## Overview
Piperacillin-tazobactam is a combination beta-lactam/beta-lactamase inhibitor antibiotic. Piperacillin is a broad-spectrum penicillin antibiotic, and tazobactam inhibits beta-lactamases, enzymes that can inactivate piperacillin.
## Primary Indications
* Complicated intra-abdominal infections
* Complicated skin and skin structure infections
* Community-acquired pneumonia
* Nosocomial pneumonia
* Nosocomial intra-abdominal infections
## Adult Dosing
The typical adult dose is 3.375 grams every 6 hours or 4.5 grams every 8 hours, administered as an intravenous infusion over 30 minutes. Dosing frequency and duration depend on the severity of infection and patient response.
## Pediatric Dosing
* **3 months and older:**
* Complicated intra-abdominal infections: 90 mg piperacillin/12.5 mg tazobactam per kg per dose administered every 8 hours.
* Community-acquired pneumonia: 90 mg piperacillin/12.5 mg tazobactam per kg per dose administered every 8 hours.
* Maximum dose: 3.375 grams per dose.
* Dosing is based on the piperacillin component.
## Dose Adjustments
* **Renal Impairment:** Dose reduction and/or increased dosing interval may be necessary for patients with creatinine clearance < 40 mL/min. Specific adjustments depend on the degree of renal impairment and local protocols.
## Contraindications
* Hypersensitivity to piperacillin, tazobactam, or any component of the formulation.
* History of severe allergic reaction to beta-lactam antibiotics.
## Adverse Effects
Common adverse effects include diarrhea, nausea, vomiting, rash, pruritus, headache, insomnia, and elevated liver enzymes. Serious adverse effects include *Clostridioides difficile*-associated diarrhea, hypersensitivity reactions (including anaphylaxis), seizures, and hematologic abnormalities.
## Key Drug Interactions
* **Probenecid:** May increase and prolong piperacillin-tazobactam serum concentrations.
* **Neuromuscular blocking agents:** Piperacillin may prolong the neuromuscular blockade of certain agents (e.g., vecuronium).
* **Warfarin:** Monitor INR due to potential for altered anticoagulant response.
## Monitoring
* Renal function
* Liver function tests
* Signs and symptoms of infection
* *Clostridioides difficile* infection
* Allergic reactions
## Clinical Pearls
* Administer by intravenous infusion. Do not administer as an intravenous bolus injection.
* Reconstituted solutions should be used within specified timeframes to ensure stability.
* Tazobactam does not protect against all beta-lactamases.
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**Disclaimer:** This information is intended for healthcare professionals. It is essential to consult the most current prescribing information and institutional guidelines for complete and up-to-date details regarding dosing, administration, contraindications, warnings, precautions, and adverse reactions.
