Comparative Pharmacology
Head-to-head clinical analysis: VICODIN HP versus ZYDONE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: VICODIN HP versus ZYDONE.
VICODIN HP vs ZYDONE
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Hydrocodone is a mu-opioid receptor agonist that inhibits ascending pain pathways; acetaminophen inhibits cyclooxygenase and has antipyretic effects.
Hydrocodone is a mu-opioid receptor agonist; acetaminophen produces analgesia via central COX inhibition and activation of descending serotonergic pathways.
One tablet (hydrocodone bitartrate 10 mg/acetaminophen 660 mg) orally every 4-6 hours as needed for pain; maximum 6 tablets per day.
Oral: 1 to 2 tablets every 4 to 6 hours as needed for pain. Each tablet contains hydrocodone bitartrate 5 mg and acetaminophen 500 mg (Zydone 5/500). Maximum acetaminophen dose: 4000 mg/day (8 tablets).
None Documented
None Documented
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.
Terminal elimination half-life of hydrocodone is 3.8-4.5 hours in healthy adults; prolonged in elderly or hepatic impairment (up to 6-8 hours). Clinical context: dosing interval typically every 4-6 hours, adjusted for renal/hepatic insufficiency.
Primarily renal: hydrocodone is eliminated as conjugated metabolites (glucuronides) ~80%; unchanged drug ~5%. Biliary/fecal: minor, <10%.
Approximately 60% of hydrocodone and its metabolites are excreted renally as glucuronide conjugates; ~10% as norhydrocodone, hydromorphone, and other metabolites. Fecal excretion accounts for less than 5%. Total renal elimination: ~65-70%.
Category C
Category C
Opioid Analgesic
Opioid Analgesic