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藥物交互作用

Avatrombopag + Phenytoin

嚴重程度: 中度

Avatrombopag and Phenytoin: moderate interaction.

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僅供醫療專業人員參考。本頁為簡要摘要,並非醫療建議,亦不能取代官方仿單或臨床判斷。開立處方或調劑前請務必核實。

本頁的臨床內容僅提供英文版。

摘要

Phenytoin induces CYP2C9 and CYP3A4, both of which metabolise avatrombopag. Platelet response to avatrombopag may be reduced.

用白話說明這項交互作用的意義

Avatrombopag and Phenytoin can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.

Avatrombopag belongs to Miscellaneous; Phenytoin belongs to Central Nervous System.

證據等級: Moderate

為什麼會發生

Phenytoin induces CYP2C9 and CYP3A4, accelerating avatrombopag clearance.

處置方式

In ITP, use the higher avatrombopag starting dose recommended in labeling for dual inducers. Monitor platelet counts and adjust the dose accordingly.

可向藥師詢問的問題

  • Should I take them at different times of day?
  • Does the dose of either medicine need to change?
  • Is there anything I should avoid, such as alcohol or certain foods, while on both?

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

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解鎖完整頁面

建立帳號並開始 Pro+ 試用,即可解鎖 Avatrombopag 與 Phenytoin 的完整臨床處置建議、補充說明、證據詳情及整張處方的交互作用檢查工具。

  • Full clinical management advice
  • Additional notes
  • Evidence detail
  • Interaction checker for a whole prescription

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常見問題

Can I take Avatrombopag with Phenytoin?

MediHelp rates the interaction as moderate. Avatrombopag and Phenytoin can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Phenytoin induces CYP2C9 and CYP3A4, both of which metabolise avatrombopag. Platelet response to avatrombopag may be reduced.

How serious is the interaction between Avatrombopag and Phenytoin?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: In ITP, use the higher avatrombopag starting dose recommended in labeling for dual inducers. Monitor platelet counts and adjust the dose accordingly.

What other medicines interact with Phenytoin?

MediHelp also lists interactions of Phenytoin with, for example, Artemether / lumefantrine, Bictegravir, Cabotegravir. The full list is on the Phenytoin page.

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