Contraindicated in:
Use Cautiously in:
CV: hypotension, bradycardia.
Derm: flushing, sweating.
EENT: blurred vision, diplopia, miosis.
GI: constipation, nausea, vomiting.
GU: urinary retention.
Neuro: confusion, sedation, dysphoria, euphoria, floating feeling, hallucinations, headache, unusual dreams.
Resp: RESPIRATORY DEPRESSION (INCLUDING CENTRAL SLEEP APNEA [CSA] AND SLEEP-RELATED HYPOXEMIA).
Misc: physical dependence, psychological dependence, tolerance.
Drug-Drug:
Drug-Natural Products:
Renal Impairment
Therapeutic Classification: allergy, cold and cough remedies, antitussives, opioid analgesics
Pharmacologic Classification: opioid agonists
Absorption: 50% absorbed from the GI tract.
Distribution: Widely distributed to tissues.
Metabolism/Excretion: Mostly metabolized by the liver via the CYP2D6 isoenzyme); 10% converted to morphine;the CYP2D6 enzyme system exhibits genetic polymorphism (some patients [110% Whites, 3% African Americans, 1628% North Africans/Ethiopians/Arabs] may be ultra-rapid metabolizers and may have ↑ morphine concentrations and an ↑ risk of adverse effects); 515% excreted unchanged in urine.
Half-life: 2.54 hr.
Schedule II (C-II)
Schedule III (C-III)
Schedule IV (C-IV)
Schedule V (C-V)(depends on content)
NDC Code*