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 eletriptan by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. pentobarbital will decrease the level or effect of tolterodine by affecting hepatic/intestinal enz... https://allyourbookmarks.com/story20317414/un-arma-segreta-per-pentobarbital-de-sodium