Dizziness, nausea and fatigue after taking Chinese medicine may be an adverse reaction to the medicine, which should be stopped immediately and prompt medical attention should be sought. There are many reasons for adverse reactions after taking medicines. The first is the factor of prescription, and the nature of the drug, decoction method, prescription dosage and the length of time of use, drug compounding and so on. Overdose of Chinese medicine is the main reason for the occurrence of adverse reactions, overdose or long-term application of certain toxic drugs can easily lead to liver and kidney damage, and improper use of Chinese medicine and western medicine is also one of the reasons. Secondly, it is the patient’s own factors. Patients of different age, constitution and physical condition react differently to drugs. Although the drug may be within a reasonable range, but certain allergies or the elderly and weak may also have adverse reactions, in addition to this, pediatrics, the elderly, pregnant women, lactating women and other special groups of people need to be more cautious in the use of drugs. Therefore, we call on patients to seek medical advice in a timely manner, under the guidance of a physician, do not blindly use medication without authorization, in order to avoid adverse drug reactions, aggravation of the condition, and so on.