Butabarbital will lessen the level or impact of sulfamethoxazole by affecting hepatic enzyme CYP2C9/10 metabolism. Minimal/Importance Mysterious. butabarbital will lower the level or effect of glecaprevir/pibrentasvir by affecting hepatic/intestinal enzyme CYP3A4 metabolism. butabarbital will minimize the extent or impact of levoketoconazole by impacting hepatic/intestinal enzyme CYP3... https://traudla665sbg1.digitollblog.com/profile