Comparative Pharmacology
Head-to-head clinical analysis: ADVIL PM versus NAPROXEN SODIUM AND DIPHENHYDRAMINE HYDROCHLORIDE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: ADVIL PM versus NAPROXEN SODIUM AND DIPHENHYDRAMINE HYDROCHLORIDE.
ADVIL PM vs NAPROXEN SODIUM AND DIPHENHYDRAMINE HYDROCHLORIDE
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Ibuprofen is a nonsteroidal anti-inflammatory drug (NSAID) that inhibits cyclooxygenase (COX) enzymes, reducing prostaglandin synthesis. Diphenhydramine is a first-generation antihistamine that antagonizes histamine H1 receptors, causing sedation.
Naproxen sodium is a nonsteroidal anti-inflammatory drug (NSAID) that inhibits cyclooxygenase (COX-1 and COX-2) enzymes, reducing prostaglandin synthesis, which mediates inflammation, pain, and fever. Diphenhydramine hydrochloride is a first-generation antihistamine that antagonizes histamine H1 receptors, reducing allergic symptoms and inducing sedation via central H1 blockade.
Two caplets (ibuprofen 200 mg, diphenhydramine citrate 38 mg) orally at bedtime as needed for insomnia. Maximum: 2 caplets in 24 hours.
One tablet (naproxen sodium 220 mg / diphenhydramine hydrochloride 25 mg) orally every 8 hours as needed, not to exceed 2 tablets in 24 hours.
None Documented
None Documented
Ibuprofen: 2-4 hours (terminal); clinical context: steady state achieved in 1 day, not affected by renal impairment. Diphenhydramine: 4-8 hours (terminal); clinical context: prolonged in hepatic impairment.
Naproxen: 12-17 hours (mean ~14 hours); clinically, allows twice-daily dosing for sustained anti-inflammatory effect. Diphenhydramine: 4-10 hours (mean ~7 hours); shorter half-life supports sedative effect for sleep induction.
Ibuprofen: Renal (90% as metabolites and conjugates, <10% unchanged); Diphenhydramine: Renal (primarily as metabolites, ~1% unchanged). Fecal excretion is negligible for both.
Naproxen: renal excretion of naproxen and its metabolites (95% as unchanged drug and conjugated metabolites, primarily 6-O-desmethylnaproxen). Diphenhydramine: renal excretion of unchanged drug and metabolites (primarily as diphenylmethoxyacetic acid); approximately 50-60% eliminated in urine as unchanged drug and metabolites, with a small fraction in feces.
Category C
Category D/X
NSAID/Sedative Combination
NSAID