Panax quinquefolium has the effect of clearing away heat and toxins (removing heat and toxins from the body) and cooling the throat and blood (cooling the blood and clearing the throat). The method of consumption is to take appropriate amount of decoction. Panlangen is commonly used in the clinic for external fever (fever caused by feeling external evils), sore throat, the beginning of warm diseases, warm poison spots (warm and hot poisonous evils invade the body resulting in spots and patches on the skin), and dengtoxin (an acute infectious disease, which can be seen in the skin as red as pigment) and other conditions. It is not to be taken by those who are weak and have no real fire and heat poison, and it is to be used with caution by those who are weak and cold in the spleen and stomach. The method of consumption is to take appropriate amount of decoction. Prompt medical attention is recommended for any related symptoms. If there is a need for medication, it should be used under the guidance of a traditional Chinese medicine practitioner, and should not be used blindly on one’s own to avoid adverse consequences.