Comparative Pharmacology
Head-to-head clinical analysis: ADVIL PM versus LODINE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: ADVIL PM versus LODINE.
ADVIL PM vs LODINE
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.
Inhibition of prostaglandin synthesis via cyclooxygenase (COX) inhibition, with selectivity for COX-2 over COX-1.
Two caplets (ibuprofen 200 mg, diphenhydramine citrate 38 mg) orally at bedtime as needed for insomnia. Maximum: 2 caplets in 24 hours.
200 to 400 mg orally every 6 to 8 hours as needed; maximum daily dose 1200 mg.
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.
Terminal elimination half-life approximately 7.5 hours; in elderly or renal impairment, half-life may be prolonged up to 10 hours, requiring dose adjustment
Ibuprofen: Renal (90% as metabolites and conjugates, <10% unchanged); Diphenhydramine: Renal (primarily as metabolites, ~1% unchanged). Fecal excretion is negligible for both.
Primarily renal (60% as metabolites, <1% unchanged); biliary/fecal (30-35%)
Category C
Category C
NSAID/Sedative Combination
NSAID