Tab%252525252525252525252525252525252525252525252525252520genixim

# Tab-Genixim (Cefixime) ## Overview Tab-Genixim is a third-generation cephalosporin antibiotic. It acts by inhibiting bacterial cell wall synthesis. It is acid-stable and orally active, providing broad-spectrum coverage against many Gram-negative and some Gram-positive organisms. ## Primary Indications - Acute bacterial exacerbations of chronic bronchitis - Uncomplicated gonorrhea (urethral, endocervical, rectal) - Pharyngitis and tonsillitis (specifically *Streptococcus pyogenes*) - Otitis media - Uncomplicated urinary tract infections (UTIs) ## Adult Dosing - **Standard Infections:** 400 mg daily, administered either as a single dose or divided into 200 mg every 12 hours. - **Uncomplicated Gonorrhea:** 400 mg as a single oral dose. ## Pediatric Dosing - **General Infections (Children > 6 months):** 8 mg/kg/day, administered as a single daily dose or in two divided doses (4 mg/kg every 12 hours). - **Maximum dose:** 400 mg per day. - **Note:** Safety and efficacy in infants < 6 months have not been established. ## Dose Adjustments - **Renal Impairment:** - CrCl 21–60 mL/min: Reduce dose by 25% (or 75% of standard dose). - CrCl < 20 mL/min or hemodialysis: Reduce dose by 50% (or 50% of standard dose). - **Hepatic Impairment:** No formal dosage adjustments provided by the manufacturer. ## Contraindications - Known hypersensitivity to cefixime or other cephalosporins. - History of severe allergic reactions (e.g., anaphylaxis) to penicillins or other beta-lactams (due to potential cross-reactivity). ## Adverse Effects - **Gastrointestinal:** Diarrhea (most common, dose-dependent), abdominal pain, nausea, vomiting, dyspepsia. - **Dermatologic:** Rash, pruritus, urticaria. - **Hematologic:** Transient neutropenia, eosinophilia. - **Other:** Pseudomembranous colitis (*C. difficile*-associated diarrhea). ## Key Drug Interactions - **Anticoagulants:** May increase the anticoagulant effect of warfarin; monitor INR. - **Probenecid:** May elevate serum concentrations of cefixime by inhibiting renal excretion. - **Vaccines:** May decrease the efficacy of live typhoid vaccine. ## Monitoring - Monitor for signs of superinfection or *C. difficile* diarrhea (persistent or blood-tinged diarrhea). - Monitor renal function in patients with pre-existing impairment. - Observe for hypersensitivity reactions, especially if history of beta-lactam allergy exists. ## Clinical Pearls - **Administration:** May be taken with or without food. Bioavailability is generally not significantly affected by food. - **Resistance:** Not effective against *Staphylococcus aureus* or *Pseudomonas aeruginosa*. - **Guideline Variance:** Always check local antibiograms and current CDC/IDSA guidelines, particularly for gonorrhea treatment, as recommendations for dual-therapy may evolve based on regional resistance patterns. *** **Educational Disclaimer:** This information is for educational purposes only. Clinical guidelines and local antimicrobial resistance patterns change frequently. Always verify the most current prescribing information, dosing protocols, and patient-specific factors via institutional clinical resources or official drug monographs before prescribing or administering medication.