相互作用
Dofetilide + Quinine
重症度: 併用禁忌
Dofetilide and Quinine: contraindicated interaction.
最終更新日
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概要
Both drugs prolong the QT interval, and quinine may also reduce dofetilide renal elimination by competing for cationic tubular secretion. This raises dofetilide levels and the risk of torsades de pointes, a potentially fatal arrhythmia.
この相互作用をわかりやすく説明すると
Dofetilide and Quinine 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.
Dofetilide belongs to Cardiovascular; Quinine belongs to Anti Parasitic.
なぜ起こるのか
Additive QT prolongation combined with competition for renal tubular cationic secretion that increases dofetilide exposure.
対処法
Avoid concurrent use and choose a non-QT-prolonging antimalarial or alternative antiarrhythmic. If quinine is essential, hold dofetilide and use continuous ECG monitoring.
薬剤師に尋ねること
- 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?
Pro+会員向け
ページ全体を見る
アカウントを作成してPro+トライアルを始めると、DofetilideとQuinineの臨床対応の詳細なアドバイス、追加の注記、エビデンスの詳細、処方全体を対象とした相互作用チェッカーを利用できます。
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
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Quinineのその他の相互作用
Dofetilideのその他の相互作用
よくある質問
Can I take Dofetilide with Quinine?
MediHelp rates the interaction as contraindicated. Dofetilide and Quinine 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 quinine may also reduce dofetilide renal elimination by competing for cationic tubular secretion. This raises dofetilide levels and the risk of torsades de pointes, a potentially fatal arrhythmia.
How serious is the interaction between Dofetilide and Quinine?
MediHelp rates it contraindicated, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid concurrent use and choose a non-QT-prolonging antimalarial or alternative antiarrhythmic. If quinine is essential, hold dofetilide and use continuous ECG monitoring.
What other medicines interact with Quinine?
MediHelp also lists interactions of Quinine with, for example, Arsenic trioxide, Dronedarone, Ibutilide. The full list is on the Quinine page.
完全なモノグラフ、用量、相互作用チェッカーはMediHelpアプリで
MediHelpアプリで、完全なリファレンスを開き、複数薬剤の相互作用をチェックし、用量ツールを利用できます。
