Comparative Pharmacology
Head-to-head clinical analysis: AMPICILLIN versus GEOCILLIN.
Peer-Reviewed Evidence
Head-to-head clinical analysis: AMPICILLIN versus GEOCILLIN.
Ampicillin vs GEOCILLIN
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.
Geocillin (carbenicillin indanyl sodium) is a penicillin antibiotic that inhibits bacterial cell wall synthesis by binding to penicillin-binding proteins (PBPs), leading to cell lysis and death. It exhibits bactericidal activity against susceptible gram-negative and gram-positive bacteria.
250-500 mg orally every 6 hours; 1-2 g IV/IM every 4-6 hours.
250-500 mg orally every 6 hours.
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
1.2 hours (normal renal function); prolonged to 7-10 hours in severe renal impairment (CrCl <10 mL/min).
Renal: 90% unchanged via glomerular filtration and tubular secretion; biliary: 10% (small amount).
Primarily renal (70-80% unchanged via tubular secretion and glomerular filtration); minor biliary/fecal (<5%).
Category A/B
Category C
Penicillin Antibiotic
Penicillin Antibiotic
"The serum concentration of Probenecid can be increased when it is combined with Pivampicillin."