Recently, with the increase of positive cases, some people have caused liver injury due to improper medication in the treatment of COVID-19 infection. What should I pay attention to when I take medicine? Can I take anti COVID-19 drugs by myself? Yang Ting, deputy director of the Respiratory Center of China Japan Friendship Hospital, Wang Guiqiang, director of the Infectious Diseases Department of Peking University First Hospital, and Wang Quan, director of the Emergency Department of Beijing Children's Hospital, the authoritative experts of the Joint Prevention and Control Mechanism of the State Council, gave professional answers to questions of public concern. 1. Q: What are the contraindications and adverse reactions to the use of common drugs after COVID-19 infection? How should the public choose? Yang Ting: After infection with COVID-19, there are fever and general pain symptoms. You can use some antipyretic and analgesic drugs. There are sore throat, cough and expectoration, gastrointestinal symptoms, you can use some corresponding symptomatic drugs. Before using these drugs, be sure to carefully read the instructions and pay attention to the dosage, frequency of use and precautions. For example, acetaminophen is a commonly used antipyretic and analgesic drug, which should be prohibited for patients with severe liver and kidney dysfunction; People with recurrent peptic ulcer and bleeding, pregnant women, lactating women or people who are allergic to some antipyretic and analgesic ingredients should also use with caution. At the same time, when using these drugs, do not drink alcohol or alcoholic beverages. Try to use simple drugs. Different drugs may sometimes affect each other, increasing potential adverse side effects. In addition, we do not recommend that some patients double the drug dose in order to quickly control the symptoms. Double the drug dose, the effect may not be good, but increased the burden on the liver, increased side effects. In addition, some Chinese patent medicines or decoction drugs can also improve symptoms and have a certain rehabilitation effect, which can be reasonably selected according to your own situation. 2. Question: Is it necessary to use and can you take anti COVID-19 drugs by yourself? Wang Guiqiang. Three anti COVID-19 drugs are recommended in the ninth version of the diagnosis and treatment plan, including monoclonal antibodies, combined packaging of Nematovir/Litonavir tablets and Azovudine. Early use may reduce the occurrence of severe diseases, shorten the course of disease, and shorten the time for virus detoxification. At present, these three anti COVID-19 drugs should be used under the guidance of medical institutions and doctors. Among them, monoclonal antibodies need intravenous administration, need to be used during hospitalization, and are not suitable for use in clinics or at home; Nematvir is a small molecule antiviral drug, which can effectively reduce the risk of severe disease. The population with the indication is light and ordinary. Pay special attention to the interaction between drugs when using it; Azovudine is also a small molecule antiviral drug that can be used to treat COVID-19, but there are some precautions that need to be used under the guidance of doctors. 3. Question: For some young infants infected with COVID-19, the antipyretic drugs they can choose are limited. Can you help them with sweating? Wang Quan: For children over 2 months and under 6 months, the only antipyretic drug available is acetaminophen; Less than 2 months