pentobarbital will reduce the extent or impact of ombitasvir/paritaprevir/ritonavir & dasabuvir (DSC) by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Contraindicated. Powerful CYP3A4 inducers may possibly decrease partiaprevir and ritonavir degrees, and so lowered efficacy of Viekira Pakpentobarbital improves toxicity of ifosfamide by inf