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Bictegravir + Phenytoin

嚴重程度: 禁忌併用

Bictegravir and Phenytoin: contraindicated 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 strongly induces CYP3A and UGT1A1, which can lower bictegravir concentrations considerably. This risks loss of virologic suppression and resistance.

用白話說明這項交互作用的意義

Bictegravir and Phenytoin 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.

證據等級: High

為什麼會發生

Phenytoin induces CYP3A4 and UGT1A1, increasing bictegravir clearance.

處置方式

Do not coadminister; change to a non-inducing antiseizure drug such as levetiracetam or use an alternative antiretroviral regimen.

可向藥師詢問的問題

  • 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?

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

Pro+ 會員專屬

解鎖完整頁面

建立帳號並開始 Pro+ 試用，即可解鎖 Bictegravir 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 Bictegravir with Phenytoin?

MediHelp rates the interaction as contraindicated. Bictegravir and Phenytoin 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. Phenytoin strongly induces CYP3A and UGT1A1, which can lower bictegravir concentrations considerably. This risks loss of virologic suppression and resistance.

How serious is the interaction between Bictegravir and Phenytoin?

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 coadminister; change to a non-inducing antiseizure drug such as levetiracetam or use an alternative antiretroviral regimen.

What other medicines interact with Phenytoin?

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

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