相互作用
Fluoxetine + Pimozide
重症度: 併用禁忌
Fluoxetine and Pimozide: contraindicated interaction.
最終更新日 出典: US FDA label
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概要
Fluoxetine inhibits CYP2D6 and CYP3A4 and can raise pimozide concentrations, increasing the risk of QT prolongation and torsades de pointes. Both product labels contraindicate the combination. The effect is dose-related and most dangerous in people with cardiac disease, electrolyte disturbances or CYP2D6 poor metaboliser status.
この相互作用をわかりやすく説明すると
Fluoxetine and Pimozide 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.
Fluoxetine belongs to Central Nervous System; Pimozide belongs to Central Nervous System.
なぜ起こるのか
Fluoxetine and norfluoxetine inhibit CYP2D6 and to a lesser extent CYP3A4, reducing pimozide clearance, and both drugs may have additive effects on cardiac repolarisation.
対処法
Do not co-administer. Use an alternative antidepressant or antipsychotic without QT or CYP-inhibitory interaction, and obtain an ECG and correct potassium and magnesium if either drug has recently been taken.
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、FluoxetineとPimozide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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参考文献
Fluoxetineのその他の相互作用
Pimozideのその他の相互作用
よくある質問
Can I take Fluoxetine with Pimozide?
MediHelp rates the interaction as contraindicated. Fluoxetine and Pimozide 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. Fluoxetine inhibits CYP2D6 and CYP3A4 and can raise pimozide concentrations, increasing the risk of QT prolongation and torsades de pointes. Both product labels contraindicate the combination. The effect is dose-related and most dangerous in people with cardiac disease, electrolyte disturbances or CYP2D6 poor metaboliser status.
How serious is the interaction between Fluoxetine and Pimozide?
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. Use an alternative antidepressant or antipsychotic without QT or CYP-inhibitory interaction, and obtain an ECG and correct potassium and magnesium if either drug has recently been taken.
What other medicines interact with Fluoxetine?
MediHelp also lists interactions of Fluoxetine with, for example, Isocarboxazid, Mavacamten, Methylene blue. The full list is on the Fluoxetine 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。
