Methadone belongs to a group of medicines known as analgesics (pain relief medicines). It is an opioid pain reliever.
Methadone is used for the relief of moderate to severe pain like pain caused by a terminal illness such as cancer. Methadone belongs to a group of medicines called opioids. They act on your brain and nervous system to reduce pain. Methadone is usually used when other opioids such as such as morphine or oxycodone don’t work well enough. Read more about pain, pain-relief medication and opioid painkillers.