Antivirals are medications designed to treat viral infections by inhibiting the development and replication of viruses. They work by targeting specific stages of the viral life cycle, which helps to reduce the severity and duration of the illness. Common examples of antiviral medications include oseltamivir for influenza and acyclovir for herpes viruses. These drugs are different from antibiotics, which are used to treat bacterial infections. Antivirals can be used for various viral diseases, including HIV, hepatitis, and COVID-19. While they can help manage symptoms and prevent complications, they are not a cure for viral infections.