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相互作用

Efavirenz + Fostemsavir

重症度: 重大

Efavirenz and Fostemsavir: major interaction.

最終更新日

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概要

Efavirenz lowers temsavir, the active form of fostemsavir. Reduced exposure can cause loss of virologic response.

この相互作用をわかりやすく説明すると

Efavirenz and Fostemsavir 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.

Efavirenz belongs to Anti Virals; Fostemsavir belongs to Anti Virals.

エビデンスレベル: Moderate

なぜ起こるのか

Efavirenz-mediated induction of CYP3A4 increases temsavir clearance.

対処法

Avoid the combination. Choose an alternative regimen without strong CYP3A4 inducers, or consult an HIV specialist.

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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

Pro+会員向け

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アカウントを作成してPro+トライアルを始めると、EfavirenzとFostemsavir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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よくある質問

Can I take Efavirenz with Fostemsavir?

MediHelp rates the interaction as major. Efavirenz and Fostemsavir 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. Efavirenz lowers temsavir, the active form of fostemsavir. Reduced exposure can cause loss of virologic response.

How serious is the interaction between Efavirenz and Fostemsavir?

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. Choose an alternative regimen without strong CYP3A4 inducers, or consult an HIV specialist.

What other medicines interact with Efavirenz?

MediHelp also lists interactions of Efavirenz with, for example, Cobimetinib, Dienogest / estradiol valerate, Dihydroergotamine intranasal. The full list is on the Efavirenz 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。

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