The main ingredient of Abidol Hydrochloride is Abidol, which is an antiviral drug that is mainly used to inhibit or treat infections of the upper or lower respiratory tract, including the trachea, bronchus, and lungs, caused by influenza A or B viruses, with good results. It can also be used to prevent influenza by inhibiting the fusion of the lipid membranes of influenza viruses with host cells, thereby blocking virus replication. In addition, it can inhibit the replication of influenza A and B viruses, reducing the mortality rate of infants, children, and adults infected with the virus. However, the side effects of Abidol Hydrochloride are relatively high and there are a few things to be aware of, mainly in the form of nausea, diarrhea, and in some cases, dizziness and increased serum aminotransferases. In the event of abnormal liver function, you need to stop taking the drug immediately; pregnant women and the elderly should try not to take the drug.