相互作用
Fesoterodine + Thioridazine
重症度: 重大
Fesoterodine and Thioridazine: major interaction.
最終更新日
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概要
Thioridazine has strong anticholinergic activity, so combined use markedly increases risk of dry mouth, constipation, urinary retention, confusion and tachycardia. Thioridazine is also a CYP2D6 substrate and inhibitor with a risk of QT prolongation.
この相互作用をわかりやすく説明すると
Fesoterodine and Thioridazine 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; Thioridazine belongs to Central Nervous System.
なぜ起こるのか
Additive antimuscarinic effects, with thioridazine's CYP2D6 inhibition potentially raising fesoterodine metabolite levels.
対処法
Avoid the combination where possible, particularly in elderly patients. If unavoidable, monitor for anticholinergic toxicity and ECG changes.
薬剤師に尋ねること
- 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?
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、FesoterodineとThioridazine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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Fesoterodineのその他の相互作用
Thioridazineのその他の相互作用
よくある質問
Can I take Fesoterodine with Thioridazine?
MediHelp rates the interaction as major. Fesoterodine and Thioridazine 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. Thioridazine has strong anticholinergic activity, so combined use markedly increases risk of dry mouth, constipation, urinary retention, confusion and tachycardia. Thioridazine is also a CYP2D6 substrate and inhibitor with a risk of QT prolongation.
How serious is the interaction between Fesoterodine and Thioridazine?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid the combination where possible, particularly in elderly patients. If unavoidable, monitor for anticholinergic toxicity and ECG changes.
What other medicines interact with Fesoterodine?
MediHelp also lists interactions of Fesoterodine with, for example, Bethanechol, Clozapine, Levoketoconazole. The full list is on the Fesoterodine 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。
