IM/IV 50-100 mg every 4-6 hr. Post-op pain Initially 100 mg followed by 50 mg every 10-20 min, & if necessary to a total max of 250 mg in the 1st hr, thereafter 50-100 mg every 4-6 hr up to 600 mg/day.
Acute intoxication w/ alcohol, hypnotic, analgesic or other CNS-acting drug.
Patients w/ increased reactivity to opioids & those w/ convulsions. Pregnancy & lactation.