Morphine is an opioid pain medication. An opioid is sometimes called a narcotic. Morphine is used to treat moderate to severe pain. Short-acting morphine is taken as needed for pain. The extended-release form of this medicine is for around-the-clock treatment of pain. This form of morphine is not for use on an as-needed basis for pain. Morphine is not for treating short-term pain just after surgery unless you were already taking morphine before the surgery. Morphine may also be used for purposes not listed in this medication guide.
MS Contin is a type of morphine. It is a pain medication that falls in the category of narcotic analgesics. MS Contin helps to relieve severe continuous pain such as that resulting from cancer. Morphine works in the brain to change how the body responds to or feels the pain.