Comparative Pharmacology
Head-to-head clinical analysis: APADAZ versus ZOHYDRO ER.
Peer-Reviewed Evidence
Head-to-head clinical analysis: APADAZ versus ZOHYDRO ER.
APADAZ vs ZOHYDRO ER
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
APADAZ is a combination of benzhydrocodone, a prodrug of hydrocodone, and acetaminophen. Hydrocodone acts as a full mu-opioid receptor agonist, inhibiting ascending pain pathways and altering pain perception. Acetaminophen's mechanism involves inhibition of cyclooxygenase (COX) enzymes, particularly in the CNS, and modulation of serotonergic pathways, contributing to analgesia and antipyresis.
Zohydro ER is a pure opioid agonist with relative selectivity for mu-opioid receptors, although it can interact with other opioid receptors at higher doses. Its primary therapeutic action is analgesia via binding to mu-opioid receptors in the central nervous system, leading to activation of descending inhibitory pathways and modulation of pain perception.
Each tablet contains benzhydrocodone 4.08 mg (hydrocodone 3.33 mg) and acetaminophen 325 mg. One to 2 tablets every 4 to 6 hours as needed for pain; maximum 12 tablets per 24 hours.
Initial: 20 mg orally every 24 hours; titrate in increments of 10-20 mg every 3-7 days as needed; maximum dose 200 mg every 24 hours.
None Documented
None Documented
Terminal elimination half-life: 2-4 hours for benzhydrocodone; context: immediate-release, dosing every 4-6 hours.
Terminal elimination half-life is approximately 10.6 hours (range 8-17 hours) due to extended-release formulation; immediate-release hydromorphone half-life is 2-3 hours. Clinically, steady-state is achieved after 3-5 days of dosing.
Renal: ~90% as conjugates, ~10% unchanged; fecal: minimal; enterohepatic recirculation occurs.
Primarily renal excretion of hydromorphone-3-glucuronide (H3G, ~60%), unchanged hydromorphone (~15%), and other conjugates. Fecal excretion accounts for ~25%.
Category C
Category C
Opioid Analgesic
Opioid Analgesic