Opioids fall under the group of drugs that are widely recommended for curing pain. Opioids consist of drugs based on the opium poppy: heroin, codeine, opium, and morphine, and synthetic opioids: methadone, hydrocodone, and oxycodone that have the same effects. A few illicit drugs, for example, heroin, are opioids too. Methadone, which is also an […]