pentobarbital will lessen the extent or outcome of etravirine by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Warning/Watch.pentobarbital will decrease the extent or result of ombitasvir/paritaprevir/ritonavir & dasabuvir (DSC) by influencing hepatic/intestinal enzyme CYP3A4 metabolism. Contraindicated. Sturdy CYP3A4 inducers may lowe