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# Forcef (cephradine)
## Overview
Cephradine is a first-generation cephalosporin antibiotic with activity primarily against Gram-positive cocci (e.g., *Staphylococcus aureus*, *Streptococcus pyogenes*) and limited Gram-negative activity (e.g., *E. coli*, *Proteus mirabilis*, *Klebsiella*). It is available in oral formulations (capsules/suspension) and parenteral forms.
## Primary Indications
* Respiratory tract infections
* Urinary tract infections (UTI)
* Skin and skin structure infections
* Bone and joint infections
* Surgical prophylaxis
## Adult Dosing
* **Mild to Moderate Infections:** 250 mg to 500 mg orally every 6 hours, or 500 mg to 1 g every 12 hours.
* **Severe/Systemic Infections:** 500 mg to 1 g IV/IM every 6 hours.
* **Maximum Dosage:** 4 g daily (higher doses may be used in severe infections per institutional protocol).
## Pediatric Dosing
* **Oral (Children > 1 year):** 25–50 mg/kg/day divided every 6 or 12 hours.
* **Parenteral:** 50–100 mg/kg/day divided every 6 hours.
* *Note: Safety in infants under 1 year of age is not well established.*
## Dose Adjustments
* **Renal Impairment:** Dosage reduction is required for CrCl < 50 mL/min.
* CrCl 20–50 mL/min: Reduce dose by 50%.
* CrCl 5–20 mL/min: Reduce dose by 75%.
* Consult institutional monographs or a renal dosing calculator for precise adjustments based on specific clearance values.
## Contraindications
* Known hypersensitivity to cephradine or other cephalosporins.
* History of severe allergic reactions (anaphylaxis/urticaria) to penicillins (cross-reactivity exists).
## Adverse Effects
* **Common:** Nausea, vomiting, diarrhea, abdominal pain.
* **Serious:** *Clostridioides difficile*-associated diarrhea (CDAD), hypersensitivity reactions (rash, angioedema, anaphylaxis), transient elevations in LFTs, and rarely, blood dyscrasias (neutropenia, agranulocytosis).
## Key Drug Interactions
* **Probenecid:** Decreases renal excretion of cephradine, increasing serum concentrations.
* **Warfarin:** Cephalosporins may potentiate the anticoagulant effect by altering gut flora (vitamin K synthesis). Monitor INR.
* **Live Vaccines (e.g., Typhoid):** Antibiotics may decrease the immunogenicity of live vaccines.
## Monitoring
* **Baseline/Ongoing:** Assess for resolution of infection symptoms.
* **Renal Function:** Monitor BUN and serum creatinine, especially in the elderly or those with existing impairment.
* **Adverse monitoring:** Monitor for signs of hypersensitivity and prolonged diarrhea (CDAD).
## Clinical Pearls
* Cephradine demonstrates cross-sensitivity; use extreme caution in patients with a history of severe penicillin allergies.
* Oral absorption is not significantly affected by food.
* Cephradine has largely been supplanted by cephazolin (parenteral) or cephalexin (oral) due to decreased availability of cephradine in many markets.
* Not effective against MRSA or *Enterococcus* species.
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**Educational Disclaimer:** This information is for educational purposes only. Clinical practice varies by institution and recent literature. Always verify current prescribing information, institutional protocols, and patient-specific factors via reliable clinical databases (e.g., Lexicomp, UpToDate) before prescribing or administering medication.
