Pentobarbital will lower the level or impact of trazodone by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Warning/Observe. pentobarbital will lower the extent or influence of diltiazem by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Watch. pentobarbital will decrease the extent or result of levonorgestrel oral/ethinylestradiol/ferrous bisglycinate b... https://eduardoqfvjy.blogkoo.com/the-basic-principles-of-dog-pentobarbital-54191055