Butabarbital will lower the level or impact of zaleplon by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Minor/Importance Not known. butabarbital will decrease the extent or influence of sufentanil by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Minor/Significance Mysterious. butabarbital will lessen the level or impact of levoketoconazole by influencing hepatic/int... https://talibh387mbs4.luwebs.com/profile