Jan. 25, 2017 — Newer drugs to cure hepatitis C may put patients at risk for liver failure and other severe side effects, according to a new study from a U.S. nonprofit group that examines drug safety. The study by the Institute for Safe Medication Practices is based on an analysis of U.S. Food and Drug Administration data and reports from doctors worldwide on adverse events possibly caused by the nine widely used antiviral drugs, The New York Times reported.