CODEINE BRAND NAME:- CODINE 15mg tab, 15mg/5ml linctus. CODEINE is an opiate and prodrug of morphine mainly used to treat pain, coughing, and diarrhea. It is also commonly used as a recreational drug. It is found naturally in the sap of the opium poppy, Papaver somniferum. It is typically used to treat mild to moderate degrees of pain. Pharmacodyanimcs:- General effects Codeine is a weak narcotic pain reliever and cough suppressant that is similar to morphine and hydrocodone. A small amount of ingested codeine is converted to morphine in the body. Codeine increases tolerance to pain, reducing existing discomfort. In addition to decreasing pain, codeine also causes sedation, drowsiness, and respiratory depression . Antitussive activity This drug has shown antitussive activity in clinical trials 6 and has been effective in cough secondary to tuberculosis and insomnia due to coughing . Codeine suppresses the cough reflex through a direct effect on the cough ce...