The drug should not be used by people who are allergic to nightshade. Since nightshade contains a certain amount of allergy-prone ingredients, some patients are allergic, so they are not suitable for taking nightshade. Nightshade, Chinese medicine name. For polygonum plant Fallopiamultiflora (Thunb.) Harald’s vine stems or vine stems with leaves, distributed in East China, Central and South and Hebei, Shanxi, Shaanxi, Gansu, Taiwan, Sichuan, Guizhou, Yunnan and other places. Nightshade has the effect of nourishing the heart and tranquilizing the mind, dispelling wind, and clearing the channels. It is used for insomnia, excessive dreaming, blood deficiency and body pain, numbness of the skin, rheumatism and paralysis, rubella and itching and other diseases. The adverse reactions and precautions of Nightshade are not clear, attention should be paid to the use of this drug, and allergy should be used with caution. If patients have a need for medication, it is recommended to use it under the guidance of a traditional Chinese medicine practitioner to avoid the serious consequences that may be caused by unauthorized use of medication.