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methadone

Methadone (also known as Symoron, Dolophine, Amidone, Methadose, Physeptone, Heptadon and many other names) is a synthetic opioid. It is used medically as an analgesic and a maintenance anti-addictive and reductive preparation for use by patients with opioid dependence. It was developed in Germany in 1937, mainly because Germany required a reliable internal source of opioids. Because it is an acyclic analog of morphine or heroin, methadone acts on the same opioid receptors as these drugs, and thus has many of the same effects. Methadone is also used in managing severe chronic pain, owing to its long duration of action, strong analgesic effect, and very low cost. Methadone was introduced into the United States in 1947 by Eli Lilly and Company. Abuse of methadone results in about 5,000 overdose deaths per year in the United States.

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