pentobarbital will lower the level or impact of glecaprevir/pibrentasvir by influencing hepatic/intestinal enzyme CYP3A4 metabolism.pentobarbital will minimize the level or influence of alprazolam by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Use Warning/Watch.pentobarbital improves toxicity of ifosfamide by influencing hepatic/intestin