pentobarbital will reduce the level or effect of glecaprevir/pibrentasvir by influencing hepatic/intestinal enzyme CYP3A4 metabolism.pentobarbital will reduce the level or influence of diazepam by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Observe.pentobarbital will decrease the level or effect of carbamazepine by influencin