Description and Brand Names
Drug information provided by: Merative, Micromedex®
US Brand Name
Morphine and naltrexone combination is used to treat moderate to severe pain when around-the-clock pain relief is needed for a long period of time. This medicine should not be used to treat pain that you only have once in a while, or pain that can be relieved with non-narcotic medication.
Morphine is a narcotic analgesic (pain medicine). It acts on the central nervous system (CNS) to relieve pain.
Naltrexone is an opioid antagonist. It blocks the effects of narcotics, especially the "high'' feeling that makes you want to use them. It will not produce any narcotic-like effects or cause mental or physical dependence.
This medicine is available only under a restricted distribution program called the Opioid Analgesic REMS (Risk Evaluation and Mitigation Strategy) program.
Portions of this document last updated: May 01, 2023
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