Final answer:
Antiviral drugs use the suffixes -ciclovir, -vir, and -avir to denote their function in viral infection treatment. These drugs, such as acyclovir and oseltamivir, help manage symptoms and inhibit viral replication.
Step-by-step explanation:
The three suffixes used to identify antiviral drugs are -ciclovir, -vir, and -avir. For example, acyclovir is an antiviral drug used to treat herpes virus infections. Other examples include oseltamivir (Tamiflu), used to treat influenza, and darunavir, used in the treatment of HIV.
Antiviral drugs often work by interfering with viral replication, which can help to reduce the severity and duration of viral infections.