Feropenem

# Feropenem ## Overview - **Classification**: Carbapenem antibiotic (Note: Information provided for Faropenem, assuming a common typographical error for "Feropenem" as "Feropenem" is not a widely recognized drug name.) - **Mechanism**: Inhibits bacterial cell wall synthesis by binding to penicillin-binding proteins (PBPs), leading to bacterial cell lysis and death. ## Primary Indications 1. **Respiratory Tract Infections**: Acute bronchitis, pneumonia, sinusitis. 2. **Urinary Tract Infections**: Cystitis, pyelonephritis. 3. **Skin & Skin Structure Infections**: Cellulitis, abscesses. 4. **Gynecological Infections**: Pelvic inflammatory disease (PID), endometritis. ## Adult Dosing ### Standard Dosing **Respiratory, Urinary, Skin & SSTIs, Gynecological Infections** - **Dose**: **200 mg** (as medoxomil) - **Frequency**: Every 8 hours (TID) - **Route**: Oral - **Duration**: Typically 7-14 days, depending on infection severity and site. ### Dose Adjustments - **Renal Impairment**: - CrCl 30-60 mL/min: **150 mg** every 8 hours - CrCl <30 mL/min: **100 mg** every 8 hours - Hemodialysis: Administer after dialysis; follow CrCl <30 mL/min dose. - **Hepatic Impairment**: No specific dose adjustment recommended. - **Elderly Patients**: No specific dose adjustment needed unless renal function is impaired. Monitor renal function closely. ## Pediatric Dosing *Note: Faropenem is generally used in children >6 months in some regions. Pediatric data may vary by country and availability.* ### Neonates (0-28 days) - **Dose**: Not recommended. Limited data, safety and efficacy not established. - **Special Notes**: Use alternative antibiotics. ### Infants (1-12 months) - **Dose**: **10-15 mg/kg/dose** - **Frequency**: Every 8 hours (TID) - **Maximum**: **200 mg/dose** - **Special Notes**: Oral suspension formulation may be available. ### Children (1-12 years) - **Dose**: **10-15 mg/kg/dose** - **Frequency**: Every 8 hours (TID) - **Maximum**: **200 mg/dose** (or **600 mg/day**) - **Special Notes**: Consider chewable tablets or suspension for ease of administration. ### Adolescents (13-18 years) - **Dose**: Approach adult dosing; **200 mg** - **Frequency**: Every 8 hours (TID) - **Maximum**: **600 mg/day** ## Safety Information ### Contraindications - **Absolute**: Hypersensitivity to Faropenem or other carbapenems. - **Absolute**: History of severe hypersensitivity to other beta-lactam antibiotics (e.g., penicillins, cephalosporins). - **Absolute**: Patients with known carnitine deficiency (rare, due to valproic acid interaction risk). ### Common Adverse Effects - **Very Common (>10%)**: Diarrhea, nausea, abdominal pain. - **Common (1-10%)**: Headache, rash, vomiting, elevated liver enzymes. - **Serious but Rare**: Seizures, Clostridioides difficile-associated diarrhea (CDAD), severe hypersensitivity reactions (anaphylaxis), Stevens-Johnson syndrome. ### Key Drug Interactions - **Valproic Acid/Sodium Valproate**: Carbapenems can significantly decrease valproic acid levels, leading to loss of seizure control. **Avoid concurrent use.** - **Probenecid**: Increases Faropenem plasma concentrations and prolongs half-life. **Avoid concurrent use if possible.** - **Oral Contraceptives**: May decrease efficacy. Advise alternative contraception. ## Monitoring & Follow-up - **Before Treatment**: Assess renal function (CrCl). Obtain culture & sensitivity if possible. - **During Treatment**: Monitor for signs of superinfection, CDAD. Assess clinical response. - **Clinical Signs**: Monitor for seizures (especially with predisposing factors or renal impairment), severe allergic reactions. ## Clinical Pearls - 💡 **Tip 1**: Faropenem is an oral carbapenem, offering a step-down option for infections requiring carbapenem activity. - 💡 **Tip 2**: Always complete the full course of therapy, even if symptoms improve, to prevent resistance. - 💡 **Tip 3**: Counsel patients on the importance of reporting severe diarrhea, rash, or any allergic symptoms immediately. - 💡 **Tip 4**: Advise patients to separate administration from antacids containing aluminum or magnesium by at least 2 hours. > **⚠️ Important**: This information is for educational purposes only and is based on the assumption that "Feropenem" was a typo for "Faropenem". "Feropenem" is not a commonly recognized drug name. Always consult current prescribing information, local guidelines, and clinical judgment before prescribing. Verify the drug name with the prescriber if uncertain.