Comparative Pharmacology
Head-to-head clinical analysis: DURADYNE DHC versus VICODIN HP.
Peer-Reviewed Evidence
Head-to-head clinical analysis: DURADYNE DHC versus VICODIN HP.
DURADYNE DHC vs VICODIN HP
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.
Hydrocodone is a mu-opioid receptor agonist that inhibits ascending pain pathways; acetaminophen inhibits cyclooxygenase and has antipyretic effects.
1 tablet (10 mg hydrocodone/300 mg acetaminophen) orally every 4-6 hours as needed for pain; maximum 8 tablets per day.
One tablet (hydrocodone bitartrate 10 mg/acetaminophen 660 mg) orally every 4-6 hours as needed for pain; maximum 6 tablets per day.
None Documented
None Documented
Terminal elimination half-life of dihydrocodeine is approximately 4 hours; clinically relevant for dosing interval of 4-6 hours.
Hydrocodone: 3.8-5.5 hours (mean 4.5 h). Acetaminophen: 2-3 hours. Clinical context: dosing interval every 4-6 hours for acute pain.
Primarily renal excretion of metabolites; ~90% excreted in urine as glucuronide conjugates and morphine; ~10% in feces via bile.
Primarily renal: hydrocodone is eliminated as conjugated metabolites (glucuronides) ~80%; unchanged drug ~5%. Biliary/fecal: minor, <10%.
Category C
Category C
Opioid Analgesic
Opioid Analgesic