Comparative Pharmacology
Head-to-head clinical analysis: AVYCAZ versus CEFADROXIL.
Peer-Reviewed Evidence
Head-to-head clinical analysis: AVYCAZ versus CEFADROXIL.
AVYCAZ vs CEFADROXIL
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
AVYCAZ is a combination of ceftazidime, a cephalosporin beta-lactam antibiotic, and avibactam, a non-beta-lactam beta-lactamase inhibitor. Ceftazidime inhibits bacterial cell wall synthesis by binding to penicillin-binding proteins (PBPs), leading to cell lysis. Avibactam protects ceftazidime from degradation by certain beta-lactamases, including Ambler class A, class C, and some class D enzymes.
Cefadroxil is a first-generation cephalosporin antibiotic that inhibits bacterial cell wall synthesis by binding to penicillin-binding proteins (PBPs), thereby inhibiting transpeptidase activity and disrupting peptidoglycan cross-linking.
1 vial (ceftazidime 2g and avibactam 0.5g) IV over 2 hours every 8 hours.
1-2 g orally once daily or divided into two doses every 12 hours.
None Documented
None Documented
Clinical Note
moderateCefadroxil + Probenecid
"The serum concentration of Probenecid can be increased when it is combined with Cefadroxil."
Clinical Note
moderateCefadroxil + Picosulfuric acid
"The therapeutic efficacy of Picosulfuric acid can be decreased when used in combination with Cefadroxil."
Clinical Note
moderateWarfarin + Cefadroxil
"Warfarin may increase the anticoagulant activities of Cefadroxil."
Clinical Note
moderatePhenprocoumon + Cefadroxil
Ceftazidime: ~2.8 hours; avibactam: ~2.7 hours. Extended in renal impairment (e.g., CrCl <50 mL/min requires dose adjustment).
Terminal elimination half-life 1.1-1.5 hours in normal renal function; prolonged to 20-30 hours in end-stage renal disease (CrCl <10 mL/min).
Ceftazidime: primarily renal (80-90% unchanged); avibactam: primarily renal (85-95% unchanged). Fecal excretion <1%.
Primarily renal (90-95% unchanged via glomerular filtration and tubular secretion); minor biliary/fecal (<5%).
Category C
Category A/B
Cephalosporin Antibiotic
Cephalosporin Antibiotic
"Phenprocoumon may increase the anticoagulant activities of Cefadroxil."