pentobarbital will reduce the level or effect of cinacalcet by influencing hepatic/intestinal enzyme CYP3A4 metabolism. Use warning/keep track of. check Closely (1)pentobarbital will reduce the extent or influence of mifepristone by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use warning/check. CYP3A4 inducers haven't been researched, c