Comparative Pharmacology
Head-to-head clinical analysis: NAFCILLIN SODIUM versus STAPHCILLIN.
Peer-Reviewed Evidence
Head-to-head clinical analysis: NAFCILLIN SODIUM versus STAPHCILLIN.
NAFCILLIN SODIUM vs STAPHCILLIN
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
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.
Semisynthetic penicillin; inhibits bacterial cell wall synthesis by binding to penicillin-binding proteins (PBPs), inhibiting transpeptidation, and activating autolytic enzymes.
1-2 g IV every 4 hours; or 1-2 g IM every 4-6 hours.
1-2 g IV every 4-6 hours.
None Documented
None Documented
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.
0.5-1 hour in adults with normal renal function; prolonged to 2-4 hours in renal impairment. Infants: 1-2 hours.
Primarily renal (30-40% unchanged) and hepatic/biliary elimination. Approximately 10-15% excreted in bile via feces.
Primarily renal (70-90% as unchanged drug via glomerular filtration and tubular secretion); minor biliary excretion (<5%) and fecal elimination (<1%).
Category A/B
Category C
Penicillin Antibiotic
Penicillin Antibiotic