Some patients may have allergic reactions after taking sour jujube kernel, mainly manifested as skin rash, itching, nausea, vomiting and other discomforts. Sour jujube kernel is the dried mature seeds of sour jujube, family Rhamnaceae. It is sweet and sour in flavor and flat in nature. It belongs to the liver, gallbladder and heart meridians. It has the functions of nourishing the heart and tonifying the liver, tranquilizing the heart and tranquilizing the mind, astringing sweat and generating fluids. It is used in treating insomnia (void and restlessness, unable to sleep), palpitation and dreaming (palpitation and frequent dreaming), excessive sweating, and thirst. After taking sour jujube seed, some patients may have skin allergies, itching, urticaria, numbness of lips and mouth, chest tightness, dizziness, nausea and vomiting and other discomforts, patients can stop taking the medicine and seek medical advice immediately. Sour jujube seed is a tonic product, so phlegm, food stagnation of the real evil or liver depression and fire (liver qi blockage caused by fire and heat evil) of insomnia, are not suitable for a large number of internal service; external sensation of surface evidence (feel the outside world after the main manifestations of evil respiratory symptoms) or surface evidence is not the end of the evidence should not be taken; sour jujube seed texture is moist and slippery, stool slippery diarrhea should not be taken in large quantities of a single drug. Patients are advised to use the medicine under the guidance of a doctor.