pentobarbital will lower the level or outcome of nilotinib by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Warning/Monitor.pentobarbital will lessen the extent or result of estropipate by influencing hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Check.pentobarbital will reduce the extent or effect of ombitasvir/paritaprevir