Pentobarbital will lessen the level or influence of saxagliptin by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Minimal/Importance Unidentified. pentobarbital will decrease the extent or effect of atazanavir by influencing hepatic/intestinal enzyme CYP3A4 metabolism. Insignificant/Significance Mysterious. pentobarbital decreases levels of amphotericin B deoxycholate by inhib... https://yogij295rst4.wikijm.com/user