Cough: Codeine is useful in treating several etiologies developing Persistent cough. Continual cough can derive from numerous pathological states, with codeine being variably effective at treating the cough depending on the underlying etiology. When you are going to do the extraction, I'd personally recomend finding some proper laboratory filter paper https://codeine90099.thekatyblog.com/33837476/codeine-can-be-fun-for-anyone