Antiviral medication is a type of medicine used to treat viral infections. Unlike antibiotics, which target bacteria, antivirals specifically combat viruses by inhibiting their ability to replicate. Common examples include oseltamivir for influenza and acyclovir for herpes viruses. These medications can help reduce the severity and duration of symptoms. Antivirals work best when taken early in the course of an infection. They can also be used for prevention in high-risk individuals, such as those exposed to HIV or hepatitis. While antivirals can be effective, they do not cure viral infections; instead, they help manage symptoms and reduce complications.