Comparative Pharmacology
Head-to-head clinical analysis: KEFLEX versus KEFZOL.
Peer-Reviewed Evidence
Head-to-head clinical analysis: KEFLEX versus KEFZOL.
KEFLEX vs KEFZOL
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Cephalexin is a first-generation cephalosporin antibiotic that inhibits bacterial cell wall synthesis by binding to penicillin-binding proteins (PBPs), leading to cell lysis and death.
Cephalosporin antibiotic that inhibits bacterial cell wall synthesis by binding to penicillin-binding proteins (PBPs), inhibiting peptidoglycan cross-linking.
250-500 mg orally every 6 hours; maximum 4 g/day.
1-2 g IV/IM every 8 hours for moderate to severe infections; maximum 12 g/day.
None Documented
None Documented
0.5–1.2 hours in patients with normal renal function (CrCl >50 mL/min); prolonged to >20 hours in ESRD.
1.5-2 hours in adults with normal renal function; prolonged to 20-30 hours in end-stage renal disease (CrCl <10 mL/min).
Primarily renal (90% or more unchanged via glomerular filtration and tubular secretion); small amounts biliary/fecal (<5%).
Renal: 80-90% unchanged via glomerular filtration and tubular secretion. Biliary/fecal: minimal (<5%).
Category C
Category C
Cephalosporin Antibiotic
Cephalosporin Antibiotic