Butabarbital will lower the extent or influence of nifedipine by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Insignificant/Significance Not known. butabarbital will decrease the extent or impact of pioglitazone by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Insignificant/Importance Unidentified. buprenorphine, very long-acting injection and butabarbital the two r... https://ronx296nli1.smblogsites.com/profile