Pentobarbital will decrease the level or effect of alfentanil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Minor/Significance Unknown. pentobarbital will decrease the level or effect of buspirone by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. Your personal data will be used to support your experience throughout this website, to manage access https://icelisting.com/story21485157/la-guida-definitiva-a-pentobarbital-half-life