The side effects of Calamus and Wind Extinguishing Tablets on children are dizziness, headache and other discomforts in individual patients after using the drug; some children may have mild urinary protein, the relationship with the drug cannot be determined yet. Calamus and wind-extinguishing tablets is a kind of Chinese patent medicine, composed of calamus, mother-of-pearl, white peony, tianma, farzhi, has the efficacy of tranquilizing the spirit and resolving phlegm, calming the liver and quenching the wind (regulating the function of the liver to get rid of the internal wind), and is mainly used for the treatment of mild to moderate pediatric polydactylism in Chinese medicine identification of the liver and wind within the phlegm evidence, which are characterized by dreaming and easy to startle, irritability, involuntary twitching of the head, neck, senses, or limbs, and so on. The adverse reactions of Calamus wind-extinguishing tablets are that individual patients may have dizziness and headache after using the drug, and some children may have mild proteinuria during the use of the drug. The contraindications of Calamus Wind-Extinguishing Tablets are prohibited for those who are allergic to this product and related ingredients. It should be noted that this product is used for children aged 4-14 years, the safety and effectiveness of the use of children under the age of 4 years can not be guaranteed, at the same time, the drug should not be taken for more than 4 weeks. Calamus wind-extinguishing tablets should be applied under the guidance of a traditional Chinese medicine practitioner, and should not be used on its own to avoid adverse consequences.