phenobarbital will lessen the extent or influence of eltrombopag by influencing hepatic enzyme CYP2C9/10 metabolism. Use Caution/Keep an eye on.Check Intently (1)phenobarbital will reduce the level or impact of tofacitinib by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Warning/Watch. Loss of, or reduced response to tofacitinib may pe… Read More