代谢
体外药物相互作用研究显示,利福昔明在2至200 ng/mL的浓度范围内,并未抑制人肝细胞色素P450同工酶:1A2、2A6、2B6、2C9、2C19、2D6、2E1和3A4。在体外肝细胞诱导模型中,利福昔明显示出能诱导细胞色素P450 3A4(CYP3A4),这是一种利福平已知能诱导的同工酶。
In vitro drug interactions studies have shown that rifaximin, at concentrations ranging from 2 to 200 ng/mL, did not inhibit human hepatic cytochrome P450 isoenzymes: 1A2, 2A6, 2B6, 2C9, 2C19, 2D6, 2E1, and 3A4. In an in vitro hepa-tocyte induction model, rifaximin was shown to induce cytochrome P450 3A4 (CYP3A4), an isoenzyme which rifampin is known to induce.
来源:DrugBank