藥物交互作用
Azithromycin + Domperidone
嚴重程度: 禁忌併用
Azithromycin and Domperidone: contraindicated interaction.
最後更新 來源: US FDA label
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摘要
Both drugs prolong the QT interval, and combined use increases the risk of torsades de pointes and sudden cardiac death. European labeling contraindicates domperidone with QT-prolonging drugs. Patients with cardiac disease, electrolyte disturbance or other QT risk factors are at greatest risk.
用白話說明這項交互作用的意義
Azithromycin and Domperidone are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two.
Azithromycin belongs to Anti Bacterial; Domperidone belongs to Gastrointestinal Tract.
為什麼會發生
Pharmacodynamic: additive QT prolongation through hERG potassium channel blockade. Azithromycin is only a weak CYP3A4 inhibitor, so any pharmacokinetic contribution is small.
處置方式
Do not co-administer. Choose an antibiotic without QT effect, such as a beta-lactam where appropriate, or an antiemetic or prokinetic without QT risk.
可向藥師詢問的問題
- Is there an alternative to one of these two medicines for me?
- If both are essential, who is monitoring me and how often?
- Which symptoms mean I should stop and seek help straight away?
參考資料
- Domperidone Summary of Product Characteristics - Contraindications and Interactions — EMA SmPC
- Zithromax (azithromycin) Prescribing Information - QT Prolongation — FDA Label
Azithromycin 的其他交互作用
Domperidone 的其他交互作用
常見問題
Can I take Azithromycin with Domperidone?
MediHelp rates the interaction as contraindicated. Azithromycin and Domperidone are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two. Both drugs prolong the QT interval, and combined use increases the risk of torsades de pointes and sudden cardiac death. European labeling contraindicates domperidone with QT-prolonging drugs. Patients with cardiac disease, electrolyte disturbance or other QT risk factors are at greatest risk.
How serious is the interaction between Azithromycin and Domperidone?
MediHelp rates it contraindicated, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Do not co-administer. Choose an antibiotic without QT effect, such as a beta-lactam where appropriate, or an antiemetic or prokinetic without QT risk.
What other medicines interact with Azithromycin?
MediHelp also lists interactions of Azithromycin with, for example, Cisapride, Dronedarone, Pimozide. The full list is on the Azithromycin page.
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