Please check your internet connection and try again.
# Tabgenixim (Cefixime)
## Overview
Tabgenixim is a third-generation cephalosporin antibiotic. It possesses broad-spectrum activity against many Gram-negative bacteria (including *Haemophilus influenzae*, *Moraxella catarrhalis*, and *Neisseria* species) and limited efficacy against Gram-positive organisms (specifically *Streptococcus* species). It has excellent stability against many beta-lactamases.
## Primary Indications
* Uncomplicated urinary tract infections (UTIs)
* Otitis media
* Pharyngitis and tonsillitis
* Acute bronchitis or exacerbations of chronic bronchitis
* Uncomplicated gonorrhea (cervical, urethral, and rectal)
## Adult Dosing
* **General infections:** 400 mg daily, administered either as a single dose or divided into 200 mg every 12 hours.
* **Uncomplicated gonorrhea:** 400 mg orally as a single dose.
## Pediatric Dosing
* **General infections (Children > 6 months):** 8 mg/kg/day, administered either as a single dose or divided into 4 mg/kg every 12 hours.
* **Maximum pediatric dose:** 400 mg daily.
## Dose Adjustments
* **Renal Impairment:** If CrCl is 21–60 mL/min, administer 75% of the standard dose. If CrCl is $\leq$ 20 mL/min, administer 50% of the standard dose.
* **Hepatic Impairment:** No standard dosage adjustment required.
## Contraindications
* Hypersensitivity to cefixime or other cephalosporins.
* History of severe allergic reactions (e.g., anaphylaxis, Stevens-Johnson syndrome) to penicillins or other beta-lactam drugs.
## Adverse Effects
* **Gastrointestinal:** Diarrhea (frequent), abdominal pain, nausea, *Clostridioides difficile*-associated diarrhea.
* **Dermatologic:** Rash, pruritus.
* **Neurologic:** Headache, dizziness.
* **Other:** Mild elevations in hepatic transaminases.
## Key Drug Interactions
* **Warfarin:** May enhance the anticoagulant effect by altering gut microflora (vitamin K reduction); monitor INR.
* **Probenecid:** May increase serum concentrations of cefixime by inhibiting renal excretion.
* **Vaccines:** May have reduced efficacy if administered with live typhoid vaccine; avoid concurrent administration.
## Monitoring
* Monitor for signs of *C. difficile*-associated diarrhea (persistent, watery stool).
* Assess renal function periodically in patients with pre-existing impairment.
* Observe for signs or symptoms of hypersensitivity reactions.
## Clinical Pearls
* **Bioavailability:** Food does not significantly affect the absorption of the tablet formulation.
* **Spectrum:** Cefixime is generally ineffective against *Staphylococcus aureus* (methicillin-susceptible or resistant) and *Enterococcus* species.
* **Efficacy:** While effective for uncomplicated gonorrhea, always verify local resistance patterns regarding *N. gonorrhoeae* as susceptibility varies geographically; dual therapy may be required by local protocols.
* **Preparation:** Ensure the patient is informed that the suspension may need refrigeration and should be shaken well before use, if applicable to the prescribed formulation.
***
**Educational Disclaimer:** This information is for educational purposes only and does not replace professional clinical judgment. Verify all doses, indications, and contraindications against institutional protocols, local susceptibility data, and the most current manufacturer’s prescribing information before ordering or administering medication.
