Poppy husk for cough is only for the symptoms of cough, because the poppy is actually opium, if the drug is now purified is codeine, codeine’s direct cough suppressant effect is very strong, is called central cough suppression. It is not the nerves of the lungs that are anesthetized, but the central brain inside the center that controls breathing and coughing, to anesthetize it. So in fact, poppy husk can stop the cough, but not to treat the cough, but only to suppress the cough with the medicinal properties, and the original cause of the cough that disease is not well. So in the normal treatment of disease, it is generally not recommended to use poppy husk to stop the cough, if there is inflammation, the fastest way to inflammation is to drain the phlegm, phlegm out, inside the inflammation will be absorbed and well. But poppy shells, it is suppressed cough, phlegm can not be discharged. When will this disease be cured? When the strength of the drug has passed, the body will want to get up again, and then slowly drain the phlegm, a long time does not wait for people, and then the lung lesions may be fibrosis, and then want to cure can not be cured. So then, poppy husk as a last resort, generally try not to use. When may be used, generally to have hemoptysis, in order to prevent excessive violent shock, and then bleeding trauma is stretched, occasionally used a little, but also provided to ensure that the condition of the sputum can be drained. There is also the patient before the surgery, afraid to do surgery, a cough incision to tear, or vibration or knife, what touched some normal tissue, that would be very bad, so in this case will occasionally apply codeine to stop the cough.