藥物交互作用
Elvitegravir / cobicistat / emtricitabine / tenofovir df + Tolterodine
嚴重程度: 嚴重
Elvitegravir / cobicistat / emtricitabine / tenofovir df and Tolterodine: major interaction.
最後更新
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摘要
Cobicistat inhibits CYP3A4 and CYP2D6, both involved in tolterodine metabolism, raising tolterodine and its active metabolite exposure. This increases anticholinergic adverse effects and potential QT prolongation.
用白話說明這項交互作用的意義
Elvitegravir / cobicistat / emtricitabine / tenofovir df and Tolterodine 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
Cobicistat inhibits CYP3A4 and CYP2D6, reducing tolterodine clearance.
處置方式
Limit tolterodine to 1 mg twice daily (or lower) and monitor for anticholinergic effects, urinary retention and QT-related symptoms.
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?
Tolterodine 的其他交互作用
常見問題
Can I take Elvitegravir / cobicistat / emtricitabine / tenofovir df with Tolterodine?
MediHelp rates the interaction as major. Elvitegravir / cobicistat / emtricitabine / tenofovir df and Tolterodine 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. Cobicistat inhibits CYP3A4 and CYP2D6, both involved in tolterodine metabolism, raising tolterodine and its active metabolite exposure. This increases anticholinergic adverse effects and potential QT prolongation.
How serious is the interaction between Elvitegravir / cobicistat / emtricitabine / tenofovir df and Tolterodine?
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 tolterodine to 1 mg twice daily (or lower) and monitor for anticholinergic effects, urinary retention and QT-related symptoms.
What other medicines interact with Tolterodine?
MediHelp also lists interactions of Tolterodine with, for example, Clarithromycin, Clozapine, Cobicistat. The full list is on the Tolterodine 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。
