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What is morphine sustained release?

Morphine sustained release is the generic name for an opioid pain reliever (analgesic) sold under multiple brand names in the United States. This narcotic pain reliever is used in the treatment of moderate to severe pain and acts by changing the brain's perception of pain. It is available by prescription only. Depending on the medication, the sustained release morphine is usually taken every 12 or 24 hours instead of every four hours for the immediate release form and is used when pain relief is needed "around the clock." Morphine sustained release keeps the level of medication relatively stable for 12 or 24 hours and is available in tablet or capsule form. Brand names for morphine sustained release include: Avinza, MS Contin, Oramorph SR and Kadian.

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