What is "dasabuvir"

Dasabuvir (trade name Exviera in Europe) is an antiviral drug for the treatment of hepatitis C virus (HCV) infection. In the United States, it is approved by the Food and Drug Administration for use in combination with ombitasvir, paritaprevir, and ritonavir in the product Viekira Pak.

Dasabuvir acts as a NS5B (an RNA-directed RNA polymerase) inhibitor.