Please check your internet connection and try again.
# Genixim (Cefixime)
## Overview
Genixim is a third-generation cephalosporin antibiotic. It exhibits bactericidal activity by inhibiting bacterial cell wall synthesis. It is stable in the presence of many beta-lactamase enzymes, providing enhanced activity against *Gram-negative* organisms compared to earlier generations.
## Primary Indications
* Uncomplicated urinary tract infections (UTIs)
* Otitis media
* Pharyngitis and tonsillitis
* Gonococcal infections (uncomplicated)
* Acute exacerbations of chronic bronchitis
## Adult Dosing
* **General infections:** 400 mg orally once daily or 200 mg every 12 hours.
* **Uncomplicated Gonorrhea:** 800 mg as a single oral dose (note: check current CDC/local guidelines for dual-therapy recommendations, often involving ceftriaxone).
## Pediatric Dosing
* **Children ≥ 6 months / > 45 kg:** Use adult dosing.
* **Children < 45 kg:** 8 mg/kg/day orally as a single dose or divided into two doses (4 mg/kg every 12 hours).
* **Maximum daily dose:** 400 mg.
## Dose Adjustments
* **Renal Impairment:**
* CrCl 21–60 mL/min: Reduce dose by 25% (or 75% of standard dose).
* CrCl < 20 mL/min: Reduce dose by 50% of the standard daily dose.
* **Hepatic Impairment:** No specific guidelines available; use with caution.
## Contraindications
* Known hypersensitivity to cefixime or other cephalosporins.
* History of severe beta-lactam allergy (e.g., anaphylaxis, Stevens-Johnson syndrome) to penicillins or carbapenems due to potential cross-reactivity.
## Adverse Effects
* **Common:** Diarrhea (frequently dose-dependent), nausea, abdominal pain, dyspepsia.
* **Serious:** *Clostridioides difficile*-associated diarrhea, hypersensitivity reactions (rash, urticaria), rare hematologic disturbances (thrombocytopenia, leukopenia).
## Key Drug Interactions
* **Anticoagulants:** May enhance the effects of warfarin (monitor INR).
* **Probenecid:** Increases serum concentrations of cefixime by decreasing renal tubular secretion.
* **Vaccines:** May decrease the efficacy of the BCG vaccine or Typhoid vaccine; avoid concurrent use.
## Monitoring
* Monitor for signs of hypersensitivity.
* Persistent diarrhea suggests potential *C. difficile* infection; discontinue if suspected and test stool.
* Renal function (BUN/SCr) in patients on long-term therapy or those with existing impairment.
## Clinical Pearls
* Oral suspension must be shaken well before use.
* Cefixime is generally ineffective against *Staphylococcus* species and has limited activity against *Enterococcus*.
* Take with or without food; taking with food may help mitigate gastrointestinal side effects.
* Always confirm local antibiotic susceptibility patterns, as resistance in certain *N. gonorrhoeae* populations is increasing.
***
**Educational Disclaimer:** This information is for educational purposes and does not substitute for professional medical judgment. Always verify current prescribing information, local clinical protocols, and pharmacy formulary guidelines before prescribing or dispensing.
