Contributors to the ongoing epidemic of prescription opioid abuse, addiction, and death include opioid tolerance, withdrawal symptoms, and possibly opioid-induced hyperalgesia (OIH). Thirty stable chronic non-malignant pain patients entered a six-month long, randomized, double-blind, dose-response, two-center trial of the potent opioid levorphanol, conducted over a decade ago during an era of permissive opioid prescribing. Eleven were taking no opioids at study entry and eleven were taking between 35-122 morphine equivalents (MEQ).
from The Journal of Pain https://ift.tt/2O7Xp6U
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