Cang Er Zi in traditional Chinese medicine for the dispersal of wind-cold medicine, its flavor is pungent, bitter, warm, with a small toxicity, the main into the lung meridian, with the dispersal of wind-cold, nasal orifices, expectoration of wind-dampness, the efficacy of pain, clinically can be used for the treatment of wind-cold headache, nose abysmal, nasal congestion, sniffles, rubella, itching, dampness paralysis constriction and other evidence.

But because of the toxicity of Cang Er Zi, the clinical dosage should not be large, otherwise it is easy to be poisoned, kidney damage, acute liver failure, cerebral edema and other serious consequences, it is recommended that the use of medication under the guidance of a physician.