- NEMBUTAL ONLINE PURCHASE OPTIONS

pentobarbital will decrease the level or effect of fentanyl transdermal by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Modify Therapy/Keep track of Closely. Coadministration of fentanyl with CYP3A4 inducers could lead to some reduce in fentanyl plasma concentrations, lack of efficacy or, probably, growth of a withdrawal syndrome inside a