Pentobarbital will lower the level or impact of saxagliptin by influencing hepatic/intestinal enzyme CYP3A4 metabolism. Minor/Significance Unknown. pentobarbital will minimize the extent or influence of prednisone by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Watch. pentobarbital will lower the extent or result of tacrolimus by impacting hepatic/intestinal enzy... https://louisugxrh.blogminds.com/the-is-nembutal-legal-in-uk-diaries-28604052