pentobarbital will reduce the level or influence of voriconazole by impacting hepatic enzyme CYP2C9/10 metabolism. Slight/Importance Unknown.pentobarbital will lessen the level or effect of tamoxifen by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Observe.pentobarbital will lower the level or outcome of nitrendipine by influen… Read More