藥物交互作用
Fesoterodine + Levoketoconazole
嚴重程度: 嚴重
Fesoterodine and Levoketoconazole: major interaction.
最後更新
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摘要
Levoketoconazole is a strong CYP3A4 inhibitor and increases exposure to the active metabolite of fesoterodine. This can intensify anticholinergic effects and may add to QT prolongation, which is also a concern with levoketoconazole.
用白話說明這項交互作用的意義
Fesoterodine and Levoketoconazole 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.
Fesoterodine belongs to Genitourinary; Levoketoconazole belongs to Endocrine.
為什麼會發生
Strong CYP3A4 inhibition reduces the clearance of fesoterodine's active metabolite.
處置方式
Limit fesoterodine to a maximum of 4 mg daily and monitor for anticholinergic toxicity. Check ECG and electrolytes given the QT risk of levoketoconazole.
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?
Fesoterodine 的其他交互作用
Levoketoconazole 的其他交互作用
常見問題
Can I take Fesoterodine with Levoketoconazole?
MediHelp rates the interaction as major. Fesoterodine and Levoketoconazole 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. Levoketoconazole is a strong CYP3A4 inhibitor and increases exposure to the active metabolite of fesoterodine. This can intensify anticholinergic effects and may add to QT prolongation, which is also a concern with levoketoconazole.
How serious is the interaction between Fesoterodine and Levoketoconazole?
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 fesoterodine to a maximum of 4 mg daily and monitor for anticholinergic toxicity. Check ECG and electrolytes given the QT risk of levoketoconazole.
What other medicines interact with Fesoterodine?
MediHelp also lists interactions of Fesoterodine with, for example, Bethanechol, Clozapine, Pramlintide. The full list is on the Fesoterodine page.
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