Pentobarbital will decrease the level or effect of fentanyl transdermal by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Modify Therapy/Monitor Closely. Coadministration of fentanyl with CYP3A4 inducers could lead to a decrease Con fentanyl plasma concentrations, lack of efficacy or, possibly, development of a withdrawal syndrome Con a patient who has developed https://express-page.com/story5727553/la-guida-pi%C3%B9-grande-per-ordinare-pentobarbital-di-sodio