藥物交互作用
Conivaptan + Darifenacin
嚴重程度: 嚴重
Conivaptan and Darifenacin: major interaction.
最後更新
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本頁的臨床內容僅提供英文版。
摘要
Conivaptan is a CYP3A4 inhibitor and can increase darifenacin exposure, raising the risk of anticholinergic adverse effects. Conivaptan is a CYP3A4 substrate too, though the reverse effect from darifenacin is not clinically significant.
用白話說明這項交互作用的意義
Conivaptan and Darifenacin can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
為什麼會發生
Inhibition of CYP3A4 by conivaptan reduces darifenacin clearance.
處置方式
Limit darifenacin to the lowest dose (7.5 mg daily) and monitor for anticholinergic toxicity during conivaptan infusion. Consider holding darifenacin if toxicity appears.
可向藥師詢問的問題
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
Darifenacin 的其他交互作用
常見問題
Can I take Conivaptan with Darifenacin?
MediHelp rates the interaction as major. Conivaptan and Darifenacin can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Conivaptan is a CYP3A4 inhibitor and can increase darifenacin exposure, raising the risk of anticholinergic adverse effects. Conivaptan is a CYP3A4 substrate too, though the reverse effect from darifenacin is not clinically significant.
How serious is the interaction between Conivaptan and Darifenacin?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Limit darifenacin to the lowest dose (7.5 mg daily) and monitor for anticholinergic toxicity during conivaptan infusion. Consider holding darifenacin if toxicity appears.
What other medicines interact with Darifenacin?
MediHelp also lists interactions of Darifenacin with, for example, Atazanavir, Bethanechol, Clarithromycin. The full list is on the Darifenacin page.
在 MediHelp App 中取得完整藥品專論、劑量資訊與交互作用檢查
在 MediHelp App 中開啟完整參考資料、檢查多種藥物間的交互作用，並使用劑量工具。
