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# Forcef (Cephradine)
## Overview
Cephradine is a first-generation cephalosporin antibiotic. It acts by inhibiting bacterial cell wall synthesis. It is chemically similar and pharmacologically equivalent to cephalexin, exhibiting activity primarily against Gram-positive cocci (e.g., *Staphylococcus aureus*, *Streptococcus pyogenes*) and limited Gram-negative coverage (e.g., *E. coli*, *Proteus mirabilis*, *Klebsiella*).
## Primary Indications
* Respiratory tract infections (pharyngitis, tonsillitis, lobar pneumonia)
* Otitis media
* Skin and skin structure infections
* Urinary tract infections (UTIs)
* Bone infections (osteomyelitis)
## Adult Dosing
* **Mild to moderate infections:** 250 mg to 500 mg orally every 6 hours.
* **Severe infections:** Up to 1 gram orally every 6 hours.
* **Maximum dose:** 4 grams per day.
## Pediatric Dosing
* **General dosage:** 25 mg/kg to 50 mg/kg per day, divided into 2 to 4 doses.
* **Otitis media:** 75 mg/kg to 100 mg/kg per day, divided into 2 to 4 doses.
* **Maximum dose:** Do not exceed 4 grams per day.
## Dose Adjustments
* **Renal Impairment:** Requires dosage reduction for patients with creatinine clearance (CrCl) < 20 mL/min.
* CrCl 10–20 mL/min: 250 mg every 6 hours.
* CrCl 5–10 mL/min: 250 mg every 12 hours.
* CrCl < 5 mL/min: 250 mg every 24 hours.
## Contraindications
* Hypersensitivity to cephradine or any cephalosporin antibiotic.
* History of severe allergic reaction (anaphylaxis) to penicillins or other beta-lactam antibiotics (due to potential for cross-reactivity).
## Adverse Effects
* **Common:** Nausea, vomiting, diarrhea, abdominal pain, dyspepsia.
* **Serious:** *Clostridioides difficile*-associated diarrhea (CDAD), hypersensitivity reactions (urticaria, rash, anaphylaxis), transient neutropenia, elevated liver enzymes.
## Key Drug Interactions
* **Probenecid:** Decreases renal tubular secretion of cephradine, potentially increasing serum concentrations.
* **Live Vaccines (e.g., BCG, Typhoid):** Antibiotics may decrease the efficacy of these vaccines.
* **Warfarin:** May enhance the anticoagulant effect by altering gut flora (vitamin K synthesis). Monitor INR.
## Monitoring
* Monitor for signs of hypersensitivity (rash, pruritus).
* Monitor renal function (BUN/SCr) in patients with pre-existing impairment or long-term therapy.
* Assess for persistent diarrhea to rule out *C. difficile* infection.
## Clinical Pearls
* **Administration:** May be taken with or without food; food may decrease the rate, but not the extent of absorption.
* **Cross-Reactivity:** Use with extreme caution in patients with a history of severe penicillin allergy.
* **Efficacy:** Not effective against MRSA or *Enterococcus* species.
* **Guidance:** Dosing may vary based on local institutional antibiograms and current IDSA guidelines. Always defer to local hospital antimicrobial stewardship protocols.
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**Disclaimer:** This information is for educational purposes only and does not constitute medical advice. Consult current prescribing information (package insert) and local clinical pharmacy resources to verify dosing, compatibility, and contraindications before prescribing or administering medication.
