Any drug has adverse reactions (side effects). Chinese medicine and western medicine are no exception. For each person, the situation is different due to the physical condition, duration of medication, dose and sensitivity to drugs. There are mainly tolerable adverse reactions and intolerable adverse reactions. Tolerable adverse reactions, that is, the adverse reactions that occur after the use of drugs are mild, not harmful to the human body, no need to stop the drug, can disappear on their own or after appropriate treatment. The intolerable adverse reactions are mostly related to the special physical condition or improper use of drugs. Allergic people are prone to allergic reactions to drugs, and improper use includes excessive doses or too long a course of treatment. Common adverse reactions include digestive system reactions such as nausea, vomiting, abdominal pain, liver function impairment, etc. Neurological reactions include dizziness, headache, increased sleep, etc. The blood routine manifests as anemia, leukocytopenia and thrombocytopenia, etc. The urinary system manifests as hematuria and renal impairment. There may also be rash, fever, sore throat, and enlarged lymph nodes. Currently commonly used western antiepileptic drugs, such as valproic acid and carbamazepine, were first developed abroad and then introduced and utilized by us. The first step is to try the drug on animals to see if it is effective and how toxic it is. What is the dose? Then the trial in humans, test patients or normal people, to study the metabolism, dose, toxicity in humans, but there are two prerequisites, one is that the drug is really effective for a disease, and no serious adverse reactions to animals. The second is that the person receiving the treatment has to give his or her consent and get the approval of the ethics committee. After that, the drug can be tried on patients and eventually marketed if it goes well. The therapeutic effects and adverse reactions of the drug after marketing are subject to continuous observation and research. If serious adverse reactions are found at this point, the drug still has to be discontinued. However, after these long and rigorous procedures for use in patients, the dangers are relatively much less. It is simply not the case, as some people claim, that anti-epileptic western drugs can make people stupid. Imagine a drug that really has that many side effects and is still approved to be marketed for use in patients? At present, the instructions for valproic acid, carbamazepine and other drugs produced by imported drugs or joint ventures are often lengthy, listing many adverse reactions (side effects) or precautions, while the same domestic drugs rarely mention the side effects of the drug. This is because the domestic and foreign management style is different. Imported drugs or joint venture drug instructions, such as the drug from the discovery to the use of all the research results of the summary, is an objective, impartial embodiment of the manufacturer, the patient is fair, not to deceive patients. The side effects covered in the instructions include all the side effects that have occurred since the development of the drug, even if one person out of millions of people has had them, they should be marked to remind patients to pay attention to the later use, early detection, early treatment, so as not to cause serious consequences. This is an objective and scientific attitude. In particular, it should be noted that not every person who uses the drug will have the side effects listed in the instructions, nor will the person who has the side effects have all the side effects listed in the instructions. In fact, only a minority of people experience side effects, and most people do not experience side effects. Any drug has side effects for all people who have used it as a whole, not for everyone who uses it. By the same token, herbal medicines also have side effects. The actual fact is that many of the anti-epileptic Chinese medicines such as centipede, capricorn, changpo, and nanxing have side effects and can be poisonous if the dosage is not properly controlled. It is not at all the case that some people claim that Chinese medicine does not have any toxic side effects. This is a deception of the patient, not a scientific attitude, and is not in line with the dialectic of things. As long as you treat the side effects of drugs scientifically and objectively, and work closely with a pediatric neurologist to monitor the side effects of drugs, you can definitely avoid or reduce serious adverse consequences.