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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]
An alkaloid narcotic, C18H21NO3, derived from opium or morphine and used as a cough suppressant, analgesic, and hypnotic.
codeineToxicology An oral opioid analgesic with antitussive activity Effects Blocks pain messages to brain; ↓ central response Used for Pain; antitussive. See Opioids.
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.
Alkaloid obtained from opium; analgesic and antitussive; drug dependence may develop, but codeine is more addictive than morphine.