What is a common medication prescribed for the treatment of influenza?

Amantadine is commonly prescribed for the treatment of influenza, particularly for Type A influenza viruses. It functions as an antiviral medication by inhibiting the viral replication process. While Amantadine was once a widely used option, it is now recommended more selectively due to concerns about resistance among some strains of the virus.

Acyclovir is primarily used for treating herpes virus infections and is ineffective against influenza. Sofosbuvir is an antiviral medication specifically developed for the treatment of hepatitis C and does not have a role in treating influenza. Ribavirin, although it has shown some activity against various RNA viruses, is not approved for use in influenza specifically and is more often used in the context of hepatitis C or certain viral hemorrhagic fevers. Therefore, amantadine remains the appropriate choice for this question concerning influenza treatment.