Buy Methadone Online to get the best pain killer medicine. Methadone is a narcotic medicine which is used to moderate severe pain. Methadone is an opioid medication. An opioid is sometimes called a narcotic. Methadone reduces withdrawal symptoms in people addicted to heroin or other narcotic drugs without causing the “high” associated with the drug addiction. Methadone is used as a pain reliever and as part of drug addiction detoxification and maintenance programs. It is available only from a certified pharmacy. Methadone is used for around-the-clock treatment of severe pain. This medicine is not for use on an as-needed basis for pain.