Comparative Pharmacology
Head-to-head clinical analysis: NAPROXEN versus ZORVOLEX.
Peer-Reviewed Evidence
Head-to-head clinical analysis: NAPROXEN versus ZORVOLEX.
NAPROXEN vs ZORVOLEX
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Naproxen is a nonsteroidal anti-inflammatory drug (NSAID) that inhibits cyclooxygenase-1 (COX-1) and cyclooxygenase-2 (COX-2), thereby reducing the synthesis of prostaglandins involved in inflammation, pain, and fever.
ZORVOLEX (diclofenac) is a nonsteroidal anti-inflammatory drug (NSAID) that inhibits cyclooxygenase (COX) enzymes, primarily COX-2, reducing the synthesis of prostaglandins, which are mediators of inflammation, pain, and fever.
250-500 mg orally twice daily; maximum 1.5 g/day. For extended-release: 750-1000 mg orally once daily.
50 mg orally every 8 hours or 100 mg orally every 12 hours; maximum 200 mg/day.
None Documented
None Documented
Clinical Note
moderateNaproxen + Gatifloxacin
"Naproxen may increase the neuroexcitatory activities of Gatifloxacin."
Clinical Note
moderateNaproxen + Rosoxacin
"Naproxen may increase the neuroexcitatory activities of Rosoxacin."
Clinical Note
moderateNaproxen + Levofloxacin
"Naproxen may increase the neuroexcitatory activities of Levofloxacin."
Clinical Note
moderateNaproxen + Trovafloxacin
"Naproxen may increase the neuroexcitatory activities of Trovafloxacin."
Terminal elimination half-life 12-17 hours (mean 14 hours); permits twice-daily dosing. Half-life prolonged in elderly and hepatic impairment.
Terminal elimination half-life of the dual-release formulation is approximately 6-7 hours. Clinical context: Allows twice-daily dosing for sustained analgesic effect.
Primarily renal (95% as unchanged naproxen and 6-O-desmethylnaproxen); <5% fecal via biliary excretion.
Renal excretion of metabolites and conjugates accounts for approximately 50% of the dose, with biliary/fecal elimination of the remainder. Less than 5% is excreted unchanged in urine.
Category D/X
Category C
NSAID
NSAID