pentobarbital will minimize the level or result of ethotoin by affecting hepatic enzyme CYP2C9/10 metabolism. Use Warning/Keep track of.pentobarbital will lessen the level or result of diltiazem by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Use Warning/Monitor.Caution when discontinuing CYP3A4 inducers that are coadministered with hydro