pentobarbital will lessen the extent or outcome of atazanavir by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Minor/Significance Not known.pentobarbital will lower the level or outcome of ombitasvir/paritaprevir/ritonavir & dasabuvir (DSC) by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Contraindicated. Strong CYP3A4 inducers co