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an alkaloid obtained from opium or morphine, used as the base or as the phosphate or sulfate salt as an opioid analgesic, antitussive, and antidiarrheal.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
Alkaloid obtained from opium, which contains 0.7-2.5%, but usually made from morphine. Used as an analgesic and antitussive; drug dependence (physical and psychic) may develop, but codeine is less liable to produce addiction than morphine; codeine is biotransformed to morphine, which accounts for most of codeine's effects.
[G. kōdeia, head, poppy head]
Farlex Partner Medical Dictionary © Farlex 2012
An alkaloid narcotic, C18H21NO3, derived from opium or morphine and used as a cough suppressant, analgesic, and hypnotic.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
codeineToxicology An oral opioid analgesic with antitussive activity Effects Blocks pain messages to brain; ↓ central response Used for Pain; antitussive. See Opioids.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.
codeineAn alkaloid derived from opium, used to control moderate pain, to relieve unnecessary coughing and to check diarrhoea. Codeine is not a drug of addiction and is available without prescription. The drug is on the WHO official list. It is contained in various branded preparations such as Co-Codamol, Codafen Continus, Galcodine, Kapake, Migraleve, Solpadol, Tylex and Zapain.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
Alkaloid obtained from opium; analgesic and antitussive; drug dependence may develop, but codeine is more addictive than morphine.
Medical Dictionary for the Dental Professions © Farlex 2012