pentobarbital will decrease the level or outcome of mavacamten by influencing hepatic/intestinal enzyme CYP3A4 metabolism. Contraindicated.pentobarbital will lessen the extent or outcome of aprepitant by influencing hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Keep an eye on.Contraindicated (1)pentobarbital will lessen the extent or inf