pentobarbital will lessen the extent or influence of mestranol by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Keep an eye on.pentobarbital will reduce the level or influence of levamlodipine by influencing hepatic/intestinal enzyme CYP3A4 metabolism.pentobarbital will reduce the level or impact of solifenacin by impacting hep