Comparative Pharmacology
Head-to-head clinical analysis: AVYCAZ versus CEFOTAXIME.
Peer-Reviewed Evidence
Head-to-head clinical analysis: AVYCAZ versus CEFOTAXIME.
AVYCAZ vs CEFOTAXIME
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.
Cefotaxime inhibits bacterial cell wall synthesis by binding to penicillin-binding proteins (PBPs), inhibiting transpeptidation, and activating autolytic enzymes.
1 vial (ceftazidime 2g and avibactam 0.5g) IV over 2 hours every 8 hours.
1-2 g IV every 6-8 hours; maximum 12 g/day. For uncomplicated infections: 1 g IV every 8-12 hours.
None Documented
None Documented
Clinical Note
moderateCefotaxime + Probenecid
"The serum concentration of Probenecid can be increased when it is combined with Cefotaxime."
Clinical Note
moderateCefotaxime + Picosulfuric acid
"The therapeutic efficacy of Picosulfuric acid can be decreased when used in combination with Cefotaxime."
Clinical Note
moderateWarfarin + Cefotaxime
"Warfarin may increase the anticoagulant activities of Cefotaxime."
Clinical Note
moderatePhenprocoumon + Cefotaxime
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: 1-1.5 hours in adults with normal renal function. In neonates, it is prolonged to 2-4 hours. In severe renal impairment (CrCl <20 mL/min), half-life extends up to 10-15 hours, requiring dose adjustment.
Ceftazidime: primarily renal (80-90% unchanged); avibactam: primarily renal (85-95% unchanged). Fecal excretion <1%.
Approximately 80-90% of the dose is excreted unchanged in the urine via glomerular filtration and tubular secretion. About 5-10% is excreted in bile and feces as desacetylcefotaxime, the active metabolite.
Category C
Category A/B
Cephalosporin Antibiotic
Cephalosporin Antibiotic
"Phenprocoumon may increase the anticoagulant activities of Cefotaxime."