Comparative Pharmacology
Head-to-head clinical analysis: AMPICILLIN versus V CILLIN.
Peer-Reviewed Evidence
Head-to-head clinical analysis: AMPICILLIN versus V CILLIN.
Ampicillin vs V-CILLIN
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Ampicillin is a penicillin antibiotic that inhibits bacterial cell wall synthesis by binding to penicillin-binding proteins (PBPs), inhibiting transpeptidase activity, and disrupting peptidoglycan cross-linking.
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.
250-500 mg orally every 6 hours; 1-2 g IV/IM every 4-6 hours.
250-500 mg orally every 8 hours or 500 mg every 12 hours for mild to moderate infections.
None Documented
None Documented
Terminal elimination half-life: 1-1.8 hours in adults with normal renal function; prolonged to 7-20 hours in end-stage renal disease (CrCl <10 mL/min).
Clinical Note
moderateAmpicillin + Acemetacin
"Ampicillin may decrease the excretion rate of Acemetacin which could result in a higher serum level."
Clinical Note
moderateAmpicillin + Probenecid
"The serum concentration of Probenecid can be increased when it is combined with Ampicillin."
Clinical Note
moderateBacampicillin + Probenecid
"The serum concentration of Probenecid can be increased when it is combined with Bacampicillin."
Clinical Note
moderatePivampicillin + Probenecid
Terminal elimination half-life ~30-60 minutes in normal renal function; prolonged in renal impairment (up to 10 hours in anuria).
Renal: 90% unchanged via glomerular filtration and tubular secretion; biliary: 10% (small amount).
Primarily renal (60-70% unchanged via tubular secretion); minor biliary/fecal elimination (<10%).
Category A/B
Category C
Penicillin Antibiotic
Penicillin Antibiotic
"The serum concentration of Probenecid can be increased when it is combined with Pivampicillin."