Codeine is a white crystalline alkaloid extracted from opium by the methylation of morphine, and with the properties of weak morphine. It is a mild narcotic used in medicine as an analgesic, and in the treatment of coughs, sleeplessness, neuralgia, and asthma. It reduces bowel activity, causing constipation, and is used to cure diarrhea.
Related category HEALTH AND DISEASE
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