Comparative Pharmacology
Head-to-head clinical analysis: DURACILLIN A S versus NAFCILLIN SODIUM.
Peer-Reviewed Evidence
Head-to-head clinical analysis: DURACILLIN A S versus NAFCILLIN SODIUM.
DURACILLIN A.S. vs NAFCILLIN SODIUM
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Penicillin G procaine is a beta-lactam antibiotic that inhibits bacterial cell wall synthesis by binding to penicillin-binding proteins (PBPs), leading to cell lysis and death.
Nafcillin exerts bactericidal activity by inhibiting bacterial cell wall synthesis via binding to penicillin-binding proteins (PBPs), thereby disrupting peptidoglycan cross-linking. It is resistant to staphylococcal beta-lactamases.
600,000 units intramuscularly once daily; or 1.2 million units intramuscularly every 12 hours for severe infections.
1-2 g IV every 4 hours; or 1-2 g IM every 4-6 hours.
None Documented
None Documented
0.5-1 hour in adults with normal renal function; prolonged to 7-10 hours in end-stage renal disease
Approximately 0.5 hour (30 minutes) in adults with normal renal function; prolonged to 1-2 hours in neonates or severe renal impairment. Clinically relevant for dosing every 4-6 hours.
Primarily renal (60-90% unchanged via tubular secretion and glomerular filtration); minor biliary/fecal elimination (<10%)
Primarily renal (30-40% unchanged) and hepatic/biliary elimination. Approximately 10-15% excreted in bile via feces.
Category C
Category A/B
Penicillin Antibiotic
Penicillin Antibiotic