Please check your internet connection and try again.
# Tabgenixim (Cefixime)
## Overview
Tabgenixim is a brand name for **Cefixime**, a third-generation cephalosporin antibiotic. It acts by inhibiting bacterial cell wall synthesis through binding to penicillin-binding proteins (PBPs), leading to cell lysis. It is stable against many beta-lactamases produced by Gram-negative organisms.
## Primary Indications
* Uncomplicated urinary tract infections (UTIs)
* Otitis media
* Pharyngitis and tonsillitis
* Acute bronchitis and acute exacerbations of chronic bronchitis
* Uncomplicated gonorrhea (cervical/urethral/rectal)
## Adult Dosing
* **General infections:** 400 mg daily, administered either as a single dose or 200 mg every 12 hours.
* **Uncomplicated gonorrhea:** 800 mg orally as a single dose.
## Pediatric Dosing
* **Children ≥ 6 months/ > 45 kg:** Use adult dosing.
* **Children 6 months to 12 years:** 8 mg/kg/day orally as a single dose or divided into two doses (4 mg/kg every 12 hours).
## Dose Adjustments
* **Renal Impairment:** If CrCl 21–60 mL/min, administer 75% of the standard dose. If CrCl ≤ 20 mL/min, administer 50% of the standard dose. No adjustment is required for patients on hemodialysis.
## Contraindications
* Known hypersensitivity to cefixime or other cephalosporins.
* History of severe allergic reactions (e.g., anaphylaxis) to penicillins or other beta-lactam antibiotics.
## Adverse Effects
* **Common:** Diarrhea (frequent), abdominal pain, nausea, dyspepsia, flatulence.
* **Serious:** *Clostridioides difficile*-associated diarrhea (CDAD), hypersensitivity reactions (rash, anaphylaxis), seizures (rare, primarily in renal failure), and hepatotoxicity.
## Key Drug Interactions
* **Warfarin:** May increase the anticoagulant effect (monitor INR).
* **Carbamazepine:** Cefixime may potentially increase serum concentrations of carbamazepine.
* **Probenecid:** May increase peak blood levels and AUC of cefixime by reducing renal excretion.
## Monitoring
* Monitor for signs of anaphylaxis during the first dose.
* If treatment is prolonged, monitor renal and hepatic function.
* Assess for persistent diarrhea, as cephalosporins carry a risk of *C. difficile* infection.
## Clinical Pearls
* Cefixime has poor activity against *Staphylococcus aureus* (methicillin-susceptible or resistant) compared to first-generation cephalosporins.
* The oral suspension must be thoroughly shaken before use.
* The tablet and suspension are not strictly bioequivalent; refer to local guidelines regarding bioavailability if switching formulations.
* Dosing varies significantly based on local resistance patterns; always confirm with institutional antibiograms.
***
**Educational Disclaimer:** This information is for educational purposes only and does not constitute medical advice. Clinical protocols vary; always verify current prescribing information, package inserts, and local institutional guidelines before prescribing or administering medication.
