Comparative Pharmacology
Head-to-head clinical analysis: CEFAZOLIN SODIUM versus CEPHALOTHIN SODIUM.
Peer-Reviewed Evidence
Head-to-head clinical analysis: CEFAZOLIN SODIUM versus CEPHALOTHIN SODIUM.
CEFAZOLIN SODIUM vs CEPHALOTHIN SODIUM
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Cefazolin is a first-generation cephalosporin antibiotic that inhibits bacterial cell wall synthesis by binding to penicillin-binding proteins (PBPs), specifically PBP1a, PBP1b, PBP2a, PBP2b, PBP2x, PBP3, and PBP4, thereby preventing cross-linking of peptidoglycan chains. This leads to cell lysis and death.
Cephalothin is a first-generation cephalosporin with bactericidal activity by inhibiting bacterial cell wall synthesis via binding to penicillin-binding proteins (PBPs).
1-2 g IV/IM every 8 hours; maximum 12 g/day for severe infections.
1-2 g IV every 4-6 hours; maximum 12 g/day.
None Documented
None Documented
Approximately 1.8 hours (range 1.2-2.2 h) in normal renal function; prolonged in renal impairment (up to 30-40 h in ESRD)
Terminal elimination half-life: 0.5-1.0 hour in adults with normal renal function. In anuria, prolonged to 2.5-8 hours. Dose adjustment required for CrCl <50 mL/min.
Primarily renal (80-90% unchanged via glomerular filtration and tubular secretion); minimal biliary (1-2%); fecal (<1%)
Primarily renal (60-90% unchanged via glomerular filtration and tubular secretion). Minor biliary excretion (1-5%). Fecal elimination negligible.
Category A/B
Category C
Cephalosporin Antibiotic
Cephalosporin Antibiotic