pentobarbital will lower the extent or outcome of etonogestrel by influencing hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Watch.pentobarbital will decrease the level or result of bexarotene by influencing hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Check.pentobarbital will reduce the extent or outcome of estrogens conjugat… Read More