Pentobarbital will decrease the level or effect of alfentanil by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Minor/Significance Unknown. Older adults or those with chronic medical conditions may experience depression, confusion, or excitement after taking the drug. pentobarbital will decrease the level or effect of bexarotene by affecting hepatic/intestinal enzyme CYP3A4 me... https://userbookmark.com/story20256157/pentobarbital-effects-opzioni