butabarbital will decrease the level or result of doxorubicin liposomal by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Warning/Watch.butabarbital will lower the extent or outcome of glecaprevir/pibrentasvir by impacting hepatic/intestinal enzyme CYP3A4 metabolism.butabarbital will minimize the extent or effect of levoketoconazole by