Comparative Pharmacology
Head-to-head clinical analysis: DURAGESIC 12 versus NORCO.
Peer-Reviewed Evidence
Head-to-head clinical analysis: DURAGESIC 12 versus NORCO.
DURAGESIC-12 vs NORCO
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Fentanyl is a potent synthetic opioid agonist that primarily binds to mu-opioid receptors in the central nervous system, leading to analgesic effects by increasing potassium conductance and decreasing calcium influx, thereby inhibiting ascending pain pathways and altering pain perception.
NORCO is a combination of hydrocodone, a mu-opioid receptor agonist that inhibits ascending pain pathways and alters pain perception, and acetaminophen, which inhibits cyclooxygenase (COX) enzymes, particularly in the CNS, leading to decreased prostaglandin synthesis and antipyresis.
Transdermal patch, initially 12 mcg/h applied every 72 hours in opioid-naive patients; titrate based on response and tolerance.
One tablet (5 mg hydrocodone/325 mg acetaminophen, 7.5 mg/325 mg, 10 mg/325 mg) orally every 4-6 hours as needed for pain. Maximum acetaminophen dose 4000 mg/day; maximum hydrocodone dose 60 mg/day.
None Documented
None Documented
Terminal elimination half-life is approximately 20–27 hours (range 13–44 hours) after transdermal patch removal; prolonged in elderly, hepatic impairment, and with continuous use due to drug accumulation in skin and adipose tissue.
Hydrocodone: terminal elimination half-life is 3.8 to 6.0 hours (mean 4.5 hours) in adults; prolonged in hepatic or renal impairment. Acetaminophen: half-life 1.5–3 hours.
Renal: approximately 75% as metabolites (primarily norfentanyl and other inactive metabolites) and <10% as unchanged fentanyl; fecal: approximately 9%; biliary: minor.
Hydrocodone: primarily renal (approximately 60% as unchanged drug and metabolites, including norhydrocodone, hydromorphone, and conjugated metabolites). Biliary/fecal excretion accounts for <10%.
Category C
Category C
Opioid Analgesic
Opioid Analgesic