Interações medicamentosas
Isavuconazole + Phenytoin
Gravidade: Contraindicada
Isavuconazole and Phenytoin: contraindicated interaction.
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Para profissionais de saúde — apenas referência. Esta página é um resumo breve, não é aconselhamento médico nem substitui a bula oficial ou o julgamento clínico. Verifique sempre antes de prescrever ou dispensar.
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Resumo
Phenytoin is an enzyme inducer that reduces isavuconazole exposure, risking loss of antifungal efficacy. Isavuconazole may also modestly raise phenytoin levels.
O que esta interação significa em palavras simples
Isavuconazole 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.
Isavuconazole belongs to Anti Fungals; Phenytoin belongs to Central Nervous System.
Por que acontece
Phenytoin induces CYP3A4/5, increasing isavuconazole metabolism.
O que fazer
Avoid the combination and use a non-inducing anticonvulsant such as levetiracetam, or another antifungal. If it cannot be avoided, monitor isavuconazole and phenytoin concentrations closely.
O que perguntar ao farmacêutico
- 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?
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Outras interações de Isavuconazole
- Carbamazepine + Isavuconazole Contraindicada
- Efavirenz + Isavuconazole Contraindicada
- Etravirine + Isavuconazole Contraindicada
- Isavuconazole + Ketoconazole Contraindicada
- Isavuconazole + Phenobarbitone Contraindicada
- Isavuconazole + Rifampicin Contraindicada
Outras interações de Phenytoin
- Artemether / lumefantrine + Phenytoin Contraindicada
- Bictegravir + Phenytoin Contraindicada
- Cabotegravir + Phenytoin Contraindicada
- Doravirine + Phenytoin Contraindicada
- Elbasvir / grazoprevir + Phenytoin Contraindicada
- Elvitegravir / cobicistat / emtricitabine / tenofovir df + Phenytoin Contraindicada
Perguntas frequentes
Can I take Isavuconazole with Phenytoin?
MediHelp rates the interaction as contraindicated. Isavuconazole 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 an enzyme inducer that reduces isavuconazole exposure, risking loss of antifungal efficacy. Isavuconazole may also modestly raise phenytoin levels.
How serious is the interaction between Isavuconazole 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 use a non-inducing anticonvulsant such as levetiracetam, or another antifungal. If it cannot be avoided, monitor isavuconazole and phenytoin concentrations closely.
What other medicines interact with Isavuconazole?
MediHelp also lists interactions of Isavuconazole with, for example, Carbamazepine, Efavirenz, Etravirine. The full list is on the Isavuconazole page.
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