pentobarbital will reduce the level or outcome of nateglinide by impacting hepatic enzyme CYP2C9/10 metabolism. Use Caution/Observe.Check Closely (one)pentobarbital will decrease the extent or influence of benzhydrocodone/acetaminophen by impacting hepatic/intestinal enzyme CYP3A4 metabolism. Modify Therapy/Keep an eye on Carefully. Caution when di