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Methadone is a medication used to treat Opioid Use Disorder (OUD). Methadone is a long-acting full opioid agonist, and a schedule II controlled medication.

Methadone, a long-acting opioid agonist, reduces opioid craving and withdrawal and blunts or blocks the effects of opioids.  Methadone, taken daily, is available in liquid, powder and diskettes forms.