pentobarbital will decrease the level or effect of cinacalcet by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Skärm.Pentobarbital, a barbiturate, is used for the treatment of short term insomnia. It belongs to a group of medicines called viktig nervous ordna (CNS) depressants that induce drowsiness and relieve tension or nerv