Comparative Pharmacology
Head-to-head clinical analysis: ALEVE PM versus TOLECTIN.
Peer-Reviewed Evidence
Head-to-head clinical analysis: ALEVE PM versus TOLECTIN.
ALEVE PM vs TOLECTIN
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Diphenhydramine is a histamine H1 receptor antagonist that competes with histamine for binding at H1 receptor sites, reducing symptoms of allergic reactions and causing sedation. Naproxen is a nonsteroidal anti-inflammatory drug (NSAID) that inhibits cyclooxygenase (COX) enzymes, decreasing synthesis of prostaglandins, which reduces pain and inflammation.
Nonsteroidal anti-inflammatory drug (NSAID) that inhibits cyclooxygenase (COX) enzymes, reducing prostaglandin synthesis.
1 tablet (220 mg naproxen sodium / 25 mg diphenhydramine HCl) orally at bedtime as needed. Maximum: 2 tablets in 24 hours.
400-600 mg orally three times daily; maximum 1.8 g/day.
None Documented
None Documented
Naproxen: 12-17 hours (mean 13.6 hours); sufficient for twice-daily dosing; prolonged in renal impairment. Diphenhydramine: 2.4-9.3 hours (mean 5.5 hours); longer in elderly, hepatic impairment.
Terminal half-life approximately 5-6 hours; clinical context: dosing every 6-8 hours required due to relatively short half-life; steady-state achieved within 24-30 hours.
Naproxen: renal (95% as unchanged drug and metabolites, primarily as naproxen and 6-O-desmethyl naproxen). Diphenhydramine: renal (50-60% as unchanged drug and metabolites, primarily as diphenhydramine and nor diphenhydramine); small amounts in feces.
Renal (90-95% as unchanged drug and metabolites, primarily glucuronide conjugates); biliary/fecal (minor, <5%).
Category C
Category C
NSAID/Antihistamine Combination
NSAID