Butabarbital will lessen the level or result of nifedipine by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Minor/Significance Unfamiliar. butabarbital will minimize the extent or impact of pioglitazone by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Minor/Significance Unfamiliar. Butabarbital can also be bought together with belladonna alkaloids underneath the manu... https://elenae689yyx1.wikistatement.com/user