butabarbital will reduce the level or impact of sulfamethoxazole by impacting hepatic enzyme CYP2C9/10 metabolism. Slight/Importance Unfamiliar.butabarbital will lower the level or effect of sufentanil by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Slight/Significance Unfamiliar.butabarbital will reduce the level or outcome of prednisolo… Read More