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A member asked:
Which opioid has the highest affinity for mu-opioid receptors?
A doctor has provided 1 answer
Morphine & Methadone: Morphine, the prototype of opioid analgesics, is a full "pure" agonist of the mu receptor. Methadone, a synthetic mu agonist opioid, has pharmaceutical activity very similar to morphine.
Answered 11/27/2017
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