藥物交互作用
Artemether / lumefantrine + Phenytoin
嚴重程度: 禁忌併用
Artemether / lumefantrine and Phenytoin: contraindicated interaction.
最後更新
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摘要
Phenytoin is a strong inducer of CYP3A4 and can markedly lower artemether and lumefantrine concentrations. This may lead to treatment failure of malaria and promote recrudescence or resistance.
用白話說明這項交互作用的意義
Artemether / lumefantrine 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.
為什麼會發生
Induction of CYP3A4-mediated metabolism of artemether and lumefantrine by phenytoin.
處置方式
Avoid the combination and choose an antimalarial or anticonvulsant that is not a strong enzyme inducer. If unavoidable, seek specialist advice and monitor parasitological response closely.
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?
Phenytoin 的其他交互作用
常見問題
Can I take Artemether / lumefantrine with Phenytoin?
MediHelp rates the interaction as contraindicated. Artemether / lumefantrine 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 is a strong inducer of CYP3A4 and can markedly lower artemether and lumefantrine concentrations. This may lead to treatment failure of malaria and promote recrudescence or resistance.
How serious is the interaction between Artemether / lumefantrine 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: Avoid the combination and choose an antimalarial or anticonvulsant that is not a strong enzyme inducer. If unavoidable, seek specialist advice and monitor parasitological response closely.
What other medicines interact with Phenytoin?
MediHelp also lists interactions of Phenytoin with, for example, Bictegravir, Cabotegravir, Doravirine. The full list is on the Phenytoin page.
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