Huanfeng Dan is to open up the orifices (through the way of phlegm to dredge the orifices, clear the mind), resting the wind spasm, can be used for the treatment of wind-phlegm obstruction of facial paralysis, the drug specification labeled 18 days for a course of treatment, the specific taking how long need to be based on the actual situation of the patient by a professional doctor to decide. Huanfengdan is composed of scorpion, asparagus, cinnabar, borax, musk, ice tablets, croton cream and so on. It can be used to treat epilepsy, hemiplegia, asymmetry of the mouth and eyes, facial nerve paralysis caused by wind-phlegm obstruction. Liver and kidney function abnormalities, pregnant women, lactating women, hematopoietic system disease patients can not take the drug; children, athletes should be careful to take. Regular testing of liver and kidney function, mercury ion and arsenic ion concentration in blood and urine is required. Since the drug has a certain degree of toxicity, it is not recommended to take it in large quantities for a long time. The drug belongs to the prescription drugs, must be taken under the guidance of the doctor as prescribed by the doctor, the specific eating how long by the doctor to decide, do not take medication without authorization.