What is a potential limitation of using anti-viral drugs?

The correct answer highlights that anti-viral drugs are not effective against all viruses, which is an important limitation to recognize. Anti-viral medications are specifically designed to target certain pathogens and their mechanisms of action are tailored to specific virus types. For example, drugs like oseltamivir are effective against influenza viruses but may not have any effect on other viral infections like the common cold or HIV.

This specificity means that while anti-virals can be incredibly effective in treating certain viral infections, they lack broad-spectrum efficacy against all viruses. As a result, understanding which virus is present is crucial before initiating treatment with anti-viral drugs, which can limit their broader application in clinical settings.