相互作用
Cobicistat + Darifenacin
重症度: 重大
Cobicistat and Darifenacin: major interaction.
最終更新日
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概要
Cobicistat strongly inhibits CYP3A4 and can substantially raise darifenacin levels, increasing anticholinergic adverse effects. Darifenacin labeling limits its dose with strong CYP3A4 inhibitors.
この相互作用をわかりやすく説明すると
Cobicistat and Darifenacin 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.
Cobicistat belongs to Miscellaneous; Darifenacin belongs to Genitourinary.
なぜ起こるのか
Strong CYP3A4 inhibition by cobicistat reduces darifenacin metabolism.
対処法
Limit darifenacin to 7.5 mg daily and monitor for dry mouth, constipation, urinary retention and cognitive effects. Consider an alternative agent if tolerability is poor.
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、CobicistatとDarifenacin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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Darifenacinのその他の相互作用
Cobicistatのその他の相互作用
よくある質問
Can I take Cobicistat with Darifenacin?
MediHelp rates the interaction as major. Cobicistat and Darifenacin 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. Cobicistat strongly inhibits CYP3A4 and can substantially raise darifenacin levels, increasing anticholinergic adverse effects. Darifenacin labeling limits its dose with strong CYP3A4 inhibitors.
How serious is the interaction between Cobicistat and Darifenacin?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Limit darifenacin to 7.5 mg daily and monitor for dry mouth, constipation, urinary retention and cognitive effects. Consider an alternative agent if tolerability is poor.
What other medicines interact with Darifenacin?
MediHelp also lists interactions of Darifenacin with, for example, Atazanavir, Bethanechol, Clarithromycin. The full list is on the Darifenacin 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。
