Comparative Pharmacology
Head-to-head clinical analysis: PENTIDS 800 versus UNIPEN.
Peer-Reviewed Evidence
Head-to-head clinical analysis: PENTIDS 800 versus UNIPEN.
PENTIDS '800' vs UNIPEN
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Penicillin G is a beta-lactam antibiotic that inhibits bacterial cell wall synthesis by binding to penicillin-binding proteins (PBPs), transpeptidases that catalyze the final transpeptidation step of peptidoglycan cross-linking, leading to cell lysis.
Unipen (nafcillin) is a penicillinase-resistant penicillin that inhibits bacterial cell wall synthesis by binding to penicillin-binding proteins (PBPs), blocking transpeptidation and autolysin inhibition.
800 mg orally every 6 to 8 hours; maximum 4 g per day.
500 mg to 2 g orally or intravenously every 4 to 6 hours; maximum 12 g/day IV for serious infections.
None Documented
None Documented
0.5-1 hour; prolonged to 2-5 hours in renal impairment.
0.5-1 hour in normal renal function; prolonged to 7-10 hours in anuria or severe renal impairment.
Renal: ~60-85% unchanged via glomerular filtration and tubular secretion; Biliary: ~10%; Fecal: <5%.
Renal: 70-90% unchanged via tubular secretion and glomerular filtration; biliary: minor (<10%); fecal: minimal.
Category C
Category C
Penicillin Antibiotic
Penicillin Antibiotic