If you're taking oral steroid medicine, don't prevent it all of a sudden. Inquire your physician about tapering your dose. Zafirlukast is extensively hepatically metabolized by an enzyme called CYP2C9. Zafirlukast inhibits the motion of CYP3A4, resulting in drug-drug interactions with other medicines that happen to be metabolized by CYP3A4. https://emilioobzlv.blog-a-story.com/15276148/not-known-facts-about-km04416