pentobarbital will lower the extent or outcome of mestranol by influencing hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Keep track of.pentobarbital will lower the extent or result of doxorubicin liposomal by influencing hepatic/intestinal enzyme CYP3A4 metabolism. Use Warning/Keep an eye on.It's not a complete list of all side effects o