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# Forcef (Cephradine)
## Overview
Cephradine is a first-generation cephalosporin antibiotic. It acts by inhibiting bacterial cell wall synthesis through binding to penicillin-binding proteins (PBPs). It is bactericidal and possesses a spectrum of activity primarily against Gram-positive cocci (e.g., *Staphylococcus aureus*, *Streptococcus pyogenes*) and limited Gram-negative activity (e.g., *E. coli*, *Proteus mirabilis*, *Klebsiella*).
## Primary Indications
* Respiratory tract infections.
* Urinary tract infections (UTIs).
* Skin and skin structure infections.
* Bone infections (osteomyelitis).
* Otitis media.
## Adult Dosing
Standard dosing for mild-to-moderate infections: 250 mg to 500 mg orally every 6 hours.
* **Severe infections:** Up to 1 g orally every 6 hours.
* **Maximum daily dose:** Do not exceed 4 g per day.
## Pediatric Dosing
Patients > 9 months: 25 to 50 mg/kg/day divided into 2 to 4 equal doses.
* **Maximum:** 4 g per day.
* *Note: Dosing can vary based on institutional protocol; always verify weight-based calculations.*
## Dose Adjustments
* **Renal Impairment:** Requires dose reduction or interval extension based on creatinine clearance (CrCl).
* CrCl 20–50 mL/min: Reduce dose/interval.
* CrCl < 20 mL/min: Significant reduction required; seek specific pharmacokinetic tables for precise titration.
## Contraindications
* Hypersensitivity to cephradine or any component of the cephalosporin class.
* Known anaphylaxis to penicillins (use with extreme caution or avoid due to potential cross-reactivity).
## Adverse Effects
* **Gastrointestinal:** Nausea, vomiting, diarrhea, pseudomembranous colitis (C. difficile-associated diarrhea).
* **Hypersensitivity:** Rash, urticaria, angioedema, anaphylaxis.
* **Hematologic:** Eosinophilia, transient neutropenia, positive direct Coombs test.
* **Renal:** Rare elevations in BUN/creatinine.
## Key Drug Interactions
* **Probenecid:** Decreases renal tubular secretion of cephalosporins, leading to increased serum levels and risk of toxicity.
* **Anticoagulants (Warfarin):** May enhance the anticoagulant effect by altering gut flora (vitamin K synthesis).
* **Live Vaccines:** Antibiotics may interfere with the immune response to certain vaccines (e.g., Typhoid).
## Monitoring
* **Renal Function:** Monitor creatinine clearance if therapy is prolonged or if patient has pre-existing renal impairment.
* **Signs of Superinfection:** Monitor for persistent diarrhea or new onset of symptoms during therapy.
* **Hypersensitivity:** Observe for rash or respiratory distress during initial dosing.
## Clinical Pearls
* **Cross-Reactivity:** While the risk of cross-hypersensitivity with penicillins is low (estimated < 5–10%), exercise extreme caution in patients with a history of penicillin-induced anaphylaxis.
* **Administration:** May be taken with or without food; take with food if GI upset occurs.
* **Laboratory Interference:** May cause false-positive results in urine glucose tests using copper reduction methods (e.g., Benedict's solution, Fehling's solution). Use enzymatic glucose oxidase methods instead.
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*Disclaimer: This information is for educational purposes and does not replace professional medical judgment. Always verify dosages, contraindications, and drug interactions with current institutional protocols, prescribing literature, and clinical decision support tools before administration.*
