pentobarbital will lessen the level or influence of eletriptan by influencing hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Keep track of.pentobarbital will minimize the extent or outcome of estropipate by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Observe.pentobarbital will lower the level or impact of paclitaxel