Comparative Pharmacology
Head-to-head clinical analysis: DURADYNE DHC versus DURAGESIC 75.
Peer-Reviewed Evidence
Head-to-head clinical analysis: DURADYNE DHC versus DURAGESIC 75.
DURADYNE DHC vs DURAGESIC-75
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
DURADYNE DHC contains dihydrocodeine, an opioid agonist that binds to mu-opioid receptors in the CNS, inhibiting ascending pain pathways and altering pain perception and response.
Fentanyl is a potent opioid agonist primarily at the mu-opioid receptor, exerting its analgesic effects by mimicking endogenous endorphins and enkephalins to activate G-protein-coupled inwardly rectifying potassium channels, leading to hyperpolarization and reduced neuronal excitability in pain pathways.
1 tablet (10 mg hydrocodone/300 mg acetaminophen) orally every 4-6 hours as needed for pain; maximum 8 tablets per day.
Adults: Apply one 75 mcg/hr transdermal patch every 72 hours. Start with lower dose in opioid-naive patients.
None Documented
None Documented
Terminal elimination half-life of dihydrocodeine is approximately 4 hours; clinically relevant for dosing interval of 4-6 hours.
22-25 hours after removal of patch; increased in elderly, hepatic/renal impairment
Primarily renal excretion of metabolites; ~90% excreted in urine as glucuronide conjugates and morphine; ~10% in feces via bile.
Renal (75% as metabolites, <10% unchanged), fecal (25%)
Category C
Category C
Opioid Analgesic
Opioid Analgesic