Comparative Pharmacology
Head-to-head clinical analysis: CIPRO XR versus QUIXIN.
Peer-Reviewed Evidence
Head-to-head clinical analysis: CIPRO XR versus QUIXIN.
CIPRO XR vs QUIXIN
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Ciprofloxacin is a fluoroquinolone antibiotic that inhibits bacterial DNA gyrase and topoisomerase IV, thereby preventing DNA replication and transcription.
Quixin (levofloxacin) is a fluoroquinolone antibiotic that inhibits bacterial DNA gyrase (topoisomerase II) and topoisomerase IV, thereby interfering with DNA replication, transcription, repair, and recombination.
500 mg to 1000 mg orally once daily for 7 to 14 days; extended-release tablet must be swallowed whole and administered with food.
One to two drops in affected eye(s) every 2 hours while awake, up to 8 times daily for 7-14 days.
None Documented
None Documented
Terminal elimination half-life is approximately 10-12 hours in patients with normal renal function, allowing twice-daily dosing; due to extended-release formulation, ciprofloxacin is released over 24 hours.
Terminal elimination half-life: 6–8 hours in adults with normal renal function; prolonged in renal impairment (up to 20 hours if CrCl <30 mL/min).
Renal excretion of unchanged drug accounts for approximately 40-50% of the dose; hepatic metabolism (glucuronidation, sulfation) produces active metabolites, and biliary/fecal elimination (via feces) accounts for 20-35% of the dose.
Renal (approximately 70% unchanged in urine); biliary/fecal (~30%, partly as metabolites and unchanged drug).
Category C
Category C
Fluoroquinolone Antibiotic
Fluoroquinolone Antibiotic