Comparative Pharmacology
Head-to-head clinical analysis: ASPIRIN versus IBUPROFEN.
Peer-Reviewed Evidence
Head-to-head clinical analysis: ASPIRIN versus IBUPROFEN.
Aspirin vs Ibuprofen
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Irreversibly inhibits cyclooxygenase-1 (COX-1) and cyclooxygenase-2 (COX-2) via acetylation, reducing prostaglandin and thromboxane A2 synthesis. Also activates lipoxin biosynthesis (inflammation resolution).
Non-selective inhibition of cyclooxygenase (COX-1 and COX-2), reducing prostaglandin synthesis, leading to anti-inflammatory, analgesic, and antipyretic effects.
325-650 mg PO q4-6h prn; max 4 g/day
200-800 mg orally every 6-8 hours; maximum 3200 mg/day.
None Documented
None Documented
30 minutes for aspirin (parent drug); salicylic acid: 2-3 hours after low doses, 15-30 hours after high doses due to saturable metabolism and renal reabsorption. Clinical context: prolonged half-life in overdose, renal impairment, and elderly patients.
Clinical Note
moderateIbuprofen + Gatifloxacin
"Ibuprofen may increase the neuroexcitatory activities of Gatifloxacin."
Clinical Note
moderateIbuprofen + Rosoxacin
"Ibuprofen may increase the neuroexcitatory activities of Rosoxacin."
Clinical Note
moderateIbuprofen + Levofloxacin
"Ibuprofen may increase the neuroexcitatory activities of Levofloxacin."
Clinical Note
moderateIbuprofen + Trovafloxacin
"Ibuprofen may increase the neuroexcitatory activities of Trovafloxacin."
Terminal elimination half-life is 2-4 hours; no accumulation with repeated dosing in normal renal function.
Renal excretion of salicylates (75-85% as salicyluric acid, 10% as free salicylic acid, 5-10% as glucuronide conjugates); dose-dependent, with renal clearance decreasing at higher doses due to saturation of metabolic pathways. Biliary/fecal elimination is minimal (<5%).
Renal excretion of conjugated metabolites (about 90% as glucuronide and sulfate conjugates, <10% as unchanged drug); minor biliary/fecal elimination (<5%).
Category C
Category D/X
NSAID / Antiplatelet
NSAID