Arbidol is primarily used as an antiviral medication, particularly in the treatment and prevention of influenza and other respiratory viral infections. It works by inhibiting the fusion of the viral envelope with the host cell membrane, thereby preventing the virus from entering and infecting the cells. This mechanism makes it effective against a range of viruses, including influenza A and B, as well as some other respiratory viruses like SARS-CoV-2.

In clinical settings, Arbidol is often prescribed to reduce the severity and duration of flu symptoms. It is also used prophylactically to prevent viral infections, especially during flu seasons or outbreaks. Additionally, it has been explored for its potential in treating other viral infections, such as those caused by coronaviruses, due to its broad-spectrum antiviral activity.

Arbidol is typically administered orally in the form of tablets or capsules. Its use is more common in certain regions, such as Russia and China, where it has been widely adopted as part of the antiviral treatment regimen. Ongoing research continues to investigate its efficacy and potential applications in combating emerging viral threats.