Butabarbital will reduce the level or influence of fedratinib by influencing hepatic/intestinal enzyme CYP3A4 metabolism. Stay clear of or Use Alternate Drug. Influence of coadministering a powerful CYP3A4 inducer with fedratinib hasn't been examined. butabarbital will lower the extent or effect of fosphenytoin by impacting hepatic enzyme CYP2C9/10 metabolism. Use https://stephenf674ngz8.blog-eye.com/profile