Unlabeled Use:
Absorption: Well absorbed from all sites (50% absorbed following oral administration). IV administration results in complete bioavailability.
Distribution: Widely distributed. Crosses the placenta; enters breast milk.
Protein Binding: 8590%.
Metabolism/Excretion: Mostly metabolized by the liver; some metabolites are active and may accumulate with chronic administration.
Half-life: 1525 hr; ↑ with chronic use.
Contraindicated in:
Use Cautiously in:
CV: TORSADES DE POINTES, hypotension, bradycardia, QT interval prolongation.
Derm: flushing, sweating.
EENT: blurred vision, diplopia, miosis.
Endo: adrenal insufficiency.
GI: constipation, nausea, vomiting.
GU: urinary retention.
Neuro: confusion, sedation, dizziness, dysphoria, euphoria, floating feeling, hallucinations, headache, unusual dreams.
Resp: RESPIRATORY DEPRESSION (INCLUDING CENTRAL SLEEP APNEA AND SLEEP-RELATED HYPOXEMIA).
Misc: physical dependence, psychological dependence, tolerance.
Drug-Drug:
Drug-Natural Products:
Moderate-to-Severe Pain
50 kg): Usual starting dose for moderate to severe pain in opioid-naive patients 2.5 mg every 812 hr;.
50 kg): 10 mg every 68 hr.Opioid Detoxification
50 kg): 1540 mg once daily or amount needed to prevent withdrawal. Dose may be ↓ every 12 days; maintenance dose is determined on an individual basis.
50 kg): 1540 mg once daily or amount needed to prevent withdrawal. Dose may be ↓ every 12 days; maintenance dose is determined on an individual basis.Dolophine, Methadose
(analgesic effect)
| ROUTE | ONSET | PEAK | DURATION |
|---|---|---|---|
| PO | 3060 min | 90120 min | 412 hr |
| IM, IV, subcut | 1020 min | 60120 min | 812 hr |
NDC Code*