Contraindicated in:
Use Cautiously in:
CV: hypertension, orthostatic hypotension, palpitations.
Derm: ↑sweating, clammy feeling.
EENT: blurred vision, diplopia, miosis (high doses).
Endo: adrenal insufficiency.
GI: dry mouth, nausea, vomiting, constipation, ileus.
GU: urinary urgency.
Neuro: dizziness, headache, sedation, confusion, dysphoria, euphoria, floating feeling, hallucinations, unusual dreams.
Resp: RESPIRATORY DEPRESSION (INCLUDING CENTRAL SLEEP APNEA AND SLEEP-RELATED HYPOXEMIA).
Misc: allodynia, opioid-induced hyperalgesia, physical dependence, psychological dependence, tolerance.
Drug-Drug:
Drug-Natural Products:
Analgesia
Supplement to Balanced Anesthesia
Therapeutic Classification: opioid analgesics
Pharmacologic Classification: opioid agonists analgesics
Absorption: Well absorbed after IM and SUBQ administration. IV administration results in complete bioavailability.
Distribution: Unknown.
Metabolism/Excretion: Mostly metabolized by the liver and eliminated in the feces via biliary excretion. Minimal amounts excreted unchanged by the kidneys.
Half-life: Children (18 yr): 0.9 hr; Adults: 3.55 hr.
NDC Code*