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Methadone, sold under the brand names Dolophine and Methadose among others, is an opioid used for opioid maintenance therapy in opioid dependence and for chronic pain management. Detoxification using methadone can be accomplished in less than a month, or it may be done gradually over as long as six months. While a single dose has a rapid effect, maximum effect can take up to five days of use. The pain-relieving effects last about six hours after a single dose. After long-term use, in people with normal liver function, effects last 8 to 36 hours. Methadone is usually taken by mouth and rarely by injection into a muscle or vein.Side effects are similar to those of other opioids. These frequently includes dizziness, sleepiness, vomiting, and sweating. Serious risks include opioid abuse and respiratory depression. Abnormal heart rhythms may also occur due to a prolonged QT interval. The number of deaths in the United States involving methadone poisoning declined from 4,418 in 2011 to 3,300 in 2015. Risks are greater with higher doses. Methadone is made by chemical synthesis and acts on opioid receptors.Methadone was developed in Germany around 1937 to 1939 by Gustav Ehrhart and Max Bockmühl. It was approved for use in the United States in 1947. It is on the World Health Organization's List of Essential Medicines, the safest and most effective medicines needed in a health system. In 2013, about 41,400 kilograms were manufactured globally. It is regulated similarly to other narcotic drugs. It is not particularly expensive in the United States.In Russia, methadone is illegal. Brazilian footballer assistant Robson Oliveira was arrested in 2019 upon arriving in Russia with methadone tablets sold legally in other countries and has been in jail since then for what was considered drug trafficking under Russian law.

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  1. J

    WA Negligence - Liability of Drug Overdose?

    My daughter died after using methadone with a companion. Her companion admits that he knew she was overdosing (he has been involved in several others) but rather than call an ambulance he put her in the recovery position and went back to sleep for quite some hours. After finally waking he found...
  2. K

    NSW Drug Test Dilemma - Methadone Treatment Program?

    Hi I'm a tradie and my boss is sending me to do a drug test as we are going to be working for state rail. Now I don't do drugs but did when I was younger but I'm on the methadone treatment program. I will declare this and take my script but I'm worried that they will deny me because they think...