Butabarbital will minimize the level or outcome of sulfamethoxazole by influencing hepatic enzyme CYP2C9/10 metabolism. Insignificant/Importance Not known. butabarbital will minimize the extent or impact of carvedilol by impacting hepatic enzyme CYP2C9/10 metabolism. Use Caution/Keep an eye on. Teniposide: Barbiturates may perhaps lower the serum concentration of Teniposide. Managemen... https://saull626hku3.liberty-blog.com/profile