Hepatitis C virus is treated with all-oral medications. These pills, called antiviral medications , are usually taken once per day. These antiviral medications are extremely good at attacking the virus and preventing it from multiplying. Antiviral medications were not the original treatment for hepatitis C. Before 2014, the only treatment for hepatitis C was called interferon and ribavirin, taken as weekly injections under the skin, plus pills. Interferon treatment caused many unpleasant side effects and was not usually successful.