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# Forcef (Cephradine)
## Overview
Cephradine is a first-generation cephalosporin antibiotic. It possesses a spectrum of activity similar to cefazolin and cephalexin, targeting Gram-positive cocci (including *S. aureus* and *S. pyogenes*) and limited Gram-negative bacilli (e.g., *E. coli*, *P. mirabilis*, *K. pneumoniae*). It is available in oral (capsules, suspension) and parenteral (IM/IV) formulations.
## Primary Indications
Treatment of respiratory tract infections, skin and soft tissue infections, urinary tract infections, and perioperative prophylaxis.
## Adult Dosing
* **Mild to Moderate Infections:** 250 mg to 500 mg orally every 6 hours.
* **Severe Infections:** Up to 1 g IV/IM every 4 to 6 hours.
* **Urinary Tract Infections:** 500 mg orally every 12 hours.
* **Maximum Dose:** Generally 4 g/day in severe cases, though some protocols suggest up to 8 g/day in life-threatening systemic infections (verify with local institutional infectious disease protocols).
## Pediatric Dosing
* **General Infections:** 25 mg/kg to 50 mg/kg per day in divided doses every 6 or 12 hours.
* **Skin/Soft Tissue or UTI:** 25 mg/kg to 50 mg/kg per day in divided doses.
* **Maximum Dose:** Do not exceed adult maximums.
## Dose Adjustments
Requires adjustment in renal impairment (CLcr < 50 mL/min).
* **CLcr 20–50 mL/min:** Standard dose every 6–12 hours.
* **CLcr 5–20 mL/min:** Standard dose every 12–24 hours.
* **CLcr < 5 mL/min:** Standard dose every 24–48 hours.
* Always monitor clinical response and trough levels if possible, though not routinely required.
## Contraindications
* Known hypersensitivity to cephradine, other cephalosporins, or a history of anaphylaxis to penicillins (use extreme caution/avoid due to potential cross-reactivity).
## Adverse Effects
* **Common:** Nausea, vomiting, diarrhea, abdominal pain.
* **Serious:** *Clostridioides difficile*-associated diarrhea, hypersensitivity reactions (rash, urticaria, anaphylaxis), reversible leukopenia, neutropenia, and elevated transaminases.
* **General:** Risk of seizures with excessively high doses, particularly in renal failure.
## Key Drug Interactions
* **Probenecid:** Decreases renal tubular secretion of cephalosporins, increasing serum concentrations.
* **Anticoagulants:** May increase the effect of warfarin by altering gut flora and reducing Vitamin K synthesis.
* **BCG Vaccine/Typhoid Vaccine:** Antibiotics may diminish the therapeutic effect of these live vaccines.
## Monitoring
* **Renal Function:** Monitor BUN and serum creatinine, especially in the elderly or those with preexisting impairment.
* **Hematology:** Periodically monitor CBC if therapy extends beyond 10-14 days.
* **Clinical Efficacy:** Resolution of fever and signs of infection.
## Clinical Pearls
* **Cross-Reactivity:** Cephalosporins, particularly first-generation, should be avoided in patients with a history of immediate-type hypersensitivity (anaphylaxis, angioedema) to penicillins.
* **Stability:** Parenteral solutions are stable for short periods; always check the specific manufacturer's recommendation for reconstitution diluents.
* **Administration:** Oral forms can be taken without regard to food; food may slightly decrease peak concentration but does not affect total absorption.
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*Disclaimer: This information is for educational purposes only. Clinical practice guidelines change frequently. Always verify current prescribing information, institutional protocols, and patient-specific factors with a reliable clinical database (e.g., Lexicomp, UpToDate) and the official FDA-approved package insert before prescribing or administering medication.*
