Assertion: parenteral methadone | /r/ObjectUse | used as first analgesic
Facets:
value: in patients
type: LOCATION
Source sentences:
text: When parenteral methadone is used as the first analgesic in patients who are not already being treated with, and tolerant to, opioids, the usual intravenous methadone starting dose is 2.5 mg to 10 mg every 8 to 12 hours, slowly titrated to effect.