Kadian (morphine) belongs to a class of drugs called opioid pain relievers. An opioid is sometimes called a narcotic. Kadian is used to treat moderate to severe pain. Extended-release Kadian capsules are used when around-the-clock pain relief is needed. You may not be able to take Kadian unless you are already being treated with a similar opioid pain medicine and your body is tolerant to it. Talk with your doctor if you are not sure you are opioid-tolerant.
Information courtesy of Drugs.com. For more information visit their website.