Pentobarbital decreases levels of amphotericin B deoxycholate by inhibition of GI absorption. Applies only to oral form of both agents. Minor/Significance Unknown. pentobarbital will decrease the level or effect of nateglinide by affecting hepatic enzyme CYP2C9/10 metabolism. Use Caution/Monitor. pentobarbital decreases effects of sufentanil SL by affecting hepatic/intestinal enzyme C... https://socialmediatotal.com/story5339219/dice-buzz-su-pentobarbital-veterinario