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μμ© κΈ°μ : Cefaclor is a **bactericidal** beta-lactam antibiotic. * It binds to specific **penicillin-binding proteins (PBPs)** located inside the bacterial cell wall. * Binding β Inhibition of the third and final stage of bacterial cell wall synthesis (peptidoglycan cross-linking). * Defective cell wall β Cell lysis mediated by bacterial cell wall autolytic enzymes (autolysins). It possesses slightly better stability against certain beta-lactamases produced by gram-negative organisms compared to first-generation cephalosporins.
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- Skin or soft tissue infections Β· 7 mg/kg PO q8h Β· PO Β· q8h Β· 21-30 days
- Systemic, lower respiratory tract infections Β· 10-13 mg/kg PO q8h Β· PO Β· q8h Β· 14 days Β· Maximum daily dose is 1 gram.
- Skin or soft tissue infections Β· 7 mg/kg PO q8h Β· PO Β· q8h Β· 21-30 days
- Systemic, lower respiratory tract infections Β· 10-13 mg/kg PO q8h Β· PO Β· q8h Β· 14 days Β· Maximum daily dose is 1 gram.
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- Known hypersensitivity to cephalosporins
- Use with caution in patients with documented penicillin allergy (potential cross-reactivity)
- Severe renal impairment (requires dosage adjustment)
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- Nausea
- Diarrhea
- Hypersensitivity reactions (including anaphylaxis)
- Serum-sickness-like reactions
- Erythema multiforme (rare)
- Rash
- Transient increases in liver enzymes
- Transient increases in BUN and serum creatinine
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- Antacids (magnesium or aluminum-containing) Β· Reduces extent of absorption of extended-release cefaclor tablets
- Probenecid Β· Reduced renal excretion of cefaclor
- Warfarin Β· Rare reports of increased anticoagulant effect
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- Clinical efficacy (resolution of infection)
- Renal function in patients with pre-existing renal insufficiency
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Cefaclor appears quite safe in dogs. * **Chronic high doses:** Dogs given daily PO doses of 200 mg/kg/day for 30 days developed soft stools, occasional emesis, and transient moderate decreases in hemoglobin. * **Massive chronic doses:** One dog given 400 mg/kg/day for one year developed a reversible thrombocytopenia.
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