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an analogue of levorphanol, which acts as an antagonist to opioid analgesics; used in the treatment of respiratory depression produced by opioid analgesics.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
levallorphanA morphine-related drug that acts as a morphine antagonist and is used to treat morphine poisoning, especially when this is causing dangerous depression of respiration.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005