Butabarbital will lower the level or result of amlodipine by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Watch. butabarbital will minimize the extent or influence of levamlodipine by affecting hepatic/intestinal enzyme CYP3A4 metabolism. butabarbital will lessen the extent or result of prednisolone by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Use Ca... https://judym396ajk7.wikibuysell.com/user