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# Tabgenixim
## Overview
Tabgenixim is a brand name often associated with **Cefixime**, a third-generation oral cephalosporin antibiotic. It acts by inhibiting bacterial cell wall synthesis. It is stable against many beta-lactamases but ineffective against *Pseudomonas* or *Enterococcus* species.
## Primary Indications
* Uncomplicated urinary tract infections (UTIs).
* Otitis media.
* Pharyngitis and tonsillitis.
* Uncomplicated gonorrhea (cervical, urethral, or rectal).
* Acute bronchitis or acute exacerbations of chronic bronchitis.
## Adult Dosing
* **General bacterial infections:** 400 mg once daily or 200 mg twice daily.
* **Uncomplicated gonorrhea:** 400 mg as a single oral dose.
* *Note: Duration varies by infection (typically 7–14 days for respiratory/UTI).*
## Pediatric Dosing
* **Children ≥ 6 months:** 8 mg/kg/day administered as a single dose or divided into two doses (4 mg/kg every 12 hours).
* **Maximum:** 400 mg/day.
## Dose Adjustments
* **Renal Impairment:** If CrCl < 60 mL/min or on hemodialysis, the dose should be reduced (e.g., 200 mg once daily in patients with CrCl 21–60 mL/min; 50% of the standard dose for patients on hemodialysis).
* *Consult local institutional protocols for specific clearance-based adjustments.*
## Contraindications
* Known hypersensitivity to cefixime or other cephalosporins (cross-reactivity occurs in patients with history of anaphylaxis to penicillins).
## Adverse Effects
* **Common:** Diarrhea (often dose-dependent, may be severe), abdominal pain, nausea, and dyspepsia.
* **Serious:** *Clostridioides difficile*-associated diarrhea, hypersensitivity reactions (rash, urticaria, anaphylaxis), and hepatotoxicity (rare).
## Key Drug Interactions
* **Anticoagulants:** May increase the anticoagulant effect of warfarin (monitor INR).
* **Carbamazepine:** Cefixime may increase serum levels of carbamazepine.
* **Probenecid:** May elevate cefixime serum concentrations by inhibiting renal tubular secretion.
## Monitoring
* Monitor for signs of hypersensitivity reactions during the first dose.
* Monitor patients for persistent diarrhea to rule out *C. difficile* infection.
* Baseline and periodic renal function monitoring in patients with pre-existing impairment.
## Clinical Pearls
* **GI Distress:** Diarrhea is the most common side effect; taking the medication with food does not always alleviate this but may improve gastrointestinal tolerance.
* **Spectrum:** It provides excellent Gram-negative coverage but has limited activity against Gram-positive organisms (e.g., *Staphylococcus aureus*).
* **Standardization:** Tablets and oral suspensions should not be substituted for one another unless the dose (mg) is verified, as bioavailability may differ slightly between formulations.
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**Educational Disclaimer:** This information is for educational purposes only and does not constitute medical advice. Clinical protocols vary by region and institution. Always verify current prescribing information, contraindications, and drug-drug interaction databases via official labels (e.g., DailyMed) or professional resources (e.g., Lexicomp, UpToDate) before prescribing.
