Definition: The principal alkaloid in opium and the prototype opiate analgesic and narcotic. Morphine has widespread effects in the central nervous system and on smooth muscle.
morphine, naltrexone combination [ ALO-01,Embeda ] Opioid Analgesic; morphine sulfate and naltrexone hydrochloride extended-release capsule for the treatment of chronic pain of osteoarthritis of the hip or knee