Pentobarbital will decrease the level or effect of ethotoin by affecting hepatic enzyme CYP2C9/ten metabolism. Use Caution/Observe. pentobarbital will lessen the extent or effect of ibuprofen by affecting hepatic enzyme CYP2C9/10 metabolism. Minimal/Importance Not known. pentobarbital will lower the level or effect of levonorgestrel oral/ethinylestradiol/ferrous bisglycinate by impact... https://kabirn655ape1.theideasblog.com/profile