Tab%2525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252525252520genixim

# Tabgenixim (Cefixime) ## Overview Tabgenixim is a brand name for **Cefixime**, a third-generation oral cephalosporin antibiotic. It exhibits broad-spectrum activity against Gram-negative organisms and stable activity against beta-lactamase-producing bacteria, though it generally has limited activity against Gram-positive organisms (e.g., *Staphylococcus* species). ## Primary Indications * Uncomplicated urinary tract infections (UTIs). * Otitis media. * Pharyngitis and tonsillitis. * Acute bronchitis and acute exacerbations of chronic bronchitis. * Uncomplicated gonorrhea (cervical/urethral). * Typhoid fever (off-label). ## Adult Dosing * **General Infections:** 400 mg orally once daily or 200 mg every 12 hours. * **Uncomplicated Gonorrhea:** 400 mg orally as a single dose. * **Maximum Dose:** 400 mg per day. ## Pediatric Dosing *(For patients >6 months old)* * **Standard Dose:** 8 mg/kg/day orally, administered as a single dose or divided into two doses (4 mg/kg every 12 hours). * **Otitis Media:** 8 mg/kg/day once daily or 4 mg/kg twice daily. * **Maximum Dose:** 400 mg per day. ## Dose Adjustments * **Renal Impairment:** * CrCl 21–60 mL/min: Administer 75% of the standard dose. * CrCl <20 mL/min: Administer 50% of the standard dose. * Hemodialysis/Peritoneal dialysis: No supplemental dose required; maintain 50% dose. * **Hepatic Impairment:** No specific adjustment guidelines provided; use with caution. ## Contraindications * Known hypersensitivity to cefixime or other cephalosporin antibiotics. * History of severe allergic reactions (e.g., anaphylaxis) to penicillins or other beta-lactams (cross-reactivity risk). ## Adverse Effects * **Common:** Diarrhea (frequently dose-related), abdominal pain, nausea, dyspepsia, flatulence. * **Serious:** *Clostridioides difficile*-associated diarrhea (CDAD), severe hypersensitivity reactions (anaphylaxis, Stevens-Johnson syndrome, toxic epidermal necrolysis), and seizures (rare, mostly in renal impairment). ## Key Drug Interactions * **Anticoagulants (e.g., Warfarin):** May increase INR/risk of bleeding; monitor PT/INR closely. * **Probenecid:** May increase serum levels of cefixime by inhibiting renal excretion. * **Contraceptives:** Potential for reduced efficacy of oral contraceptives; consider backup barrier methods. ## Monitoring * Signs/symptoms of anaphylaxis during first dose. * Renal function (BUN/SCr) in patients with baseline impairment. * Monitor for persistent diarrhea (rule out *C. difficile*). * Monitor for signs of superinfection (e.g., fungal overgrowth) during prolonged therapy. ## Clinical Pearls * **Administration:** May be taken with or without food. Oral suspension should be shaken well before use. * **Spectrum:** Cefixime has poor activity against *Staphylococcus aureus* (methicillin-susceptible or resistant) and *Enterococcus* species. Do not use for suspected Gram-positive infections. * **Stool consistency:** Diarrhea is the most common side effect; patients should be advised to maintain hydration and report severe or bloody stools immediately. *** **Educational Disclaimer:** This information is for educational purposes only. Clinical guidelines and local antimicrobial susceptibility patterns vary by region. Always verify specific dosing, safety profiles, and product availability against the most current manufacturer prescribing information, institutional antibiograms, or clinical pharmacology databases before prescribing.