Paritaprevir is an azamacrocycle which is used which is in combination with dasabuvir sodium hydrate, ombitasvir and ritonavir (under the trade name Viekira Pak) for treatment of chronic hepatitis C virus genotype 1 infection as well as cirrhosis of the liver. It has a role as an antiviral drug and a hepatitis C protease inhibitor. It is an azamacrocycle, a member of pyrazines, an aromatic amide, an aromatic ether, a lactam, a member of phenanthridines, a member of cyclopropanes and a N-sulfonylcarboxamide.