藥物交互作用
Clarithromycin + Valbenazine
嚴重程度: 嚴重
Clarithromycin and Valbenazine: major interaction.
最後更新
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摘要
Clarithromycin raises exposure to valbenazine and its active metabolite via CYP3A4 inhibition, and both drugs can prolong the QT interval. This increases the risk of somnolence and QT-related arrhythmia.
用白話說明這項交互作用的意義
Clarithromycin and Valbenazine 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.
Clarithromycin belongs to Anti Bacterial; Valbenazine belongs to Central Nervous System.
為什麼會發生
CYP3A4 inhibition increases valbenazine levels, with additive QT prolongation.
處置方式
Reduce valbenazine to 40 mg daily during clarithromycin therapy, or use a non-interacting antibiotic. Monitor ECG and electrolytes in patients at risk of QT prolongation.
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?
Clarithromycin 的其他交互作用
Valbenazine 的其他交互作用
常見問題
Can I take Clarithromycin with Valbenazine?
MediHelp rates the interaction as major. Clarithromycin and Valbenazine 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. Clarithromycin raises exposure to valbenazine and its active metabolite via CYP3A4 inhibition, and both drugs can prolong the QT interval. This increases the risk of somnolence and QT-related arrhythmia.
How serious is the interaction between Clarithromycin and Valbenazine?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Reduce valbenazine to 40 mg daily during clarithromycin therapy, or use a non-interacting antibiotic. Monitor ECG and electrolytes in patients at risk of QT prolongation.
What other medicines interact with Clarithromycin?
MediHelp also lists interactions of Clarithromycin with, for example, Astemizole, Avanafil, Cisapride. The full list is on the Clarithromycin 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。
