pentobarbital will minimize the extent or result of tamoxifen by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Warning/Check.pentobarbital improves toxicity of ifosfamide by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Watch. CYP3A4 inducers may well boost the metabolism of ifosfamide to its active alkylating meta… Read More