Comparative Pharmacology
Head-to-head clinical analysis: MEASURIN versus NAPROXEN.
Peer-Reviewed Evidence
Head-to-head clinical analysis: MEASURIN versus NAPROXEN.
MEASURIN vs NAPROXEN
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Measurin is an aspirin preparation that irreversibly inhibits cyclooxygenase (COX-1 and COX-2), thereby reducing prostaglandin and thromboxane synthesis. This results in analgesic, antipyretic, anti-inflammatory, and antiplatelet effects.
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.
325-650 mg orally every 4-6 hours as needed; maximum 4 g/day.
250-500 mg orally twice daily; maximum 1.5 g/day. For extended-release: 750-1000 mg orally once daily.
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."
Plasma elimination half-life is 2-3 hours at low doses (antiplatelet) and increases to 15-30 hours at anti-inflammatory doses due to saturation of hepatic metabolism; clinical context: higher doses require longer dosing intervals to avoid accumulation.
Terminal elimination half-life 12-17 hours (mean 14 hours); permits twice-daily dosing. Half-life prolonged in elderly and hepatic impairment.
Renal excretion of salicylate and its metabolites (salicyluric acid, salicyl phenolic glucuronide, salicyl acyl glucuronide, gentisic acid) accounts for >90% of elimination; minor biliary/fecal excretion (<5%) occurs.
Primarily renal (95% as unchanged naproxen and 6-O-desmethylnaproxen); <5% fecal via biliary excretion.
Category C
Category D/X
NSAID
NSAID