If this drug is employed through pregnancy, or When the client results in being pregnant though taking this drug, the client need to be apprised in the possible hazard to your fetus pentobarbital will lower the extent or outcome of montelukast by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Minor/Importance Not known. https://lanevmbnx.pointblog.net/what-does-que-es-el-nembutal-mean-73191845