Therapeutic Classification: analgesics (centrally acting), opioid analgesics
Pharmacologic Classification: opioid agonists
High Alert
Absorption: 32% absorbed following oral administration.
Distribution: Widely distributed.
Half-Life: 4 hr.
Contraindicated in:
Use Cautiously in:
CV: hypotension
Endo: adrenal insufficiency
GI: diarrhea, nausea, vomiting
GU: ↓fertility
Neuro: allodynia, dizziness, headache, hyperalgesia, SEIZURES, somnolence
Resp: RESPIRATORY DEPRESSION (INCLUDING CENTRAL SLEEP APNEA AND SLEEP-RELATED HYPOXEMIA)
Misc: allodynia, HYPERSENSITIVITY REACTIONS (INCLUDING ANAPHYLAXIS AND ANGIOEDEMA), opioid-induced hyperalgesia, physical dependence, psychological dependence
Drug-drug:
Hepatic Impairment
Toxicity and Overdose: