Comparative Pharmacology
Head-to-head clinical analysis: BICILLIN C R versus V CILLIN.
Peer-Reviewed Evidence
Head-to-head clinical analysis: BICILLIN C R versus V CILLIN.
BICILLIN C-R vs V-CILLIN
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Benzathine penicillin G and procaine penicillin G are beta-lactam antibiotics that inhibit bacterial cell wall synthesis by binding to penicillin-binding proteins (PBPs), inhibiting transpeptidase activity, and activating autolytic enzymes, leading to cell lysis.
Penicillin G (V-CILLIN) inhibits bacterial cell wall synthesis by binding to penicillin-binding proteins (PBPs), inhibiting transpeptidase activity and autolysin activation, leading to cell lysis.
1.2 million units intramuscularly as a single dose (600,000 units procaine penicillin G and 600,000 units benzathine penicillin G) for moderate to severe infections; for mild infections, 600,000 units intramuscularly as a single dose.
250-500 mg orally every 8 hours or 500 mg every 12 hours for mild to moderate infections.
None Documented
None Documented
Penicillin G: 0.5-1 hour in normal renal function; prolonged to 7-10 hours in anuria. Benzathine component sustains low levels for days; effective half-life of benzathine penicillin G is 3-5 days due to slow release.
Terminal elimination half-life ~30-60 minutes in normal renal function; prolonged in renal impairment (up to 10 hours in anuria).
Renal excretion primarily via glomerular filtration and tubular secretion; approximately 60-70% of penicillin G is excreted unchanged in urine within 6 hours; benzathine and procaine components are metabolized and excreted renally as well; small amounts in bile and feces.
Primarily renal (60-70% unchanged via tubular secretion); minor biliary/fecal elimination (<10%).
Category C
Category C
Penicillin Antibiotic
Penicillin Antibiotic