pentobarbital will decrease the extent or effect of ombitasvir/paritaprevir/ritonavir & dasabuvir (DSC) by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Contraindicated. Strong CYP3A4 inducers may possibly minimize partiaprevir and ritonavir concentrations, and as a consequence lowered efficacy of Viekira PakInspection: Parenteral drug goo