Comparative Pharmacology
Head-to-head clinical analysis: DOLENE versus DURAGESIC 25.
Peer-Reviewed Evidence
Head-to-head clinical analysis: DOLENE versus DURAGESIC 25.
DOLENE vs DURAGESIC-25
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Opioid agonist, primarily mu-opioid receptor activation, leading to analgesic and euphoric effects.
Fentanyl is a mu-opioid receptor agonist that produces analgesia and sedation by mimicking endogenous opioids in the central nervous system.
50 mg orally every 4-6 hours as needed for pain; maximum 400 mg per day.
Apply 25 mcg/hour transdermally every 72 hours; initial dose in opioid-naive patients: 25 mcg/hour is not recommended; use lower strength or immediate-release opioid first.
None Documented
None Documented
2.5-3.5 hours; prolonged in hepatic impairment (up to 6-8 hours) and in neonates.
Terminal elimination half-life 22-25 hours (range 13-31 h) after 72-h transdermal application; prolonged in elderly, hepatic or renal impairment
Renal: 70-80% as conjugated metabolites (mostly glucuronides), 5-10% as unchanged drug; Fecal: 5-10%; Biliary: minor.
Renal (75% as metabolites, <10% unchanged); fecal (9%)
Category C
Category C
Opioid Analgesic
Opioid Analgesic