相互作用
Fosphenytoin + Ranolazine
重症度: 併用禁忌
Fosphenytoin and Ranolazine: contraindicated interaction.
最終更新日
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概要
Phenytoin, formed from fosphenytoin, is a strong CYP3A4 inducer and can substantially lower ranolazine levels, causing loss of antianginal effect. Ranolazine labeling contraindicates CYP3A inducers.
この相互作用をわかりやすく説明すると
Fosphenytoin and Ranolazine 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.
Fosphenytoin belongs to Central Nervous System; Ranolazine belongs to Cardiovascular.
なぜ起こるのか
Induction of CYP3A4 (and P-gp) increases ranolazine clearance.
対処法
Avoid the combination and choose another antianginal. Use a different anticonvulsant if the patient needs ranolazine.
薬剤師に尋ねること
- 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?
Pro+会員向け
ページ全体を見る
アカウントを作成してPro+トライアルを始めると、FosphenytoinとRanolazine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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Ranolazineのその他の相互作用
Fosphenytoinのその他の相互作用
よくある質問
Can I take Fosphenytoin with Ranolazine?
MediHelp rates the interaction as contraindicated. Fosphenytoin and Ranolazine 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, formed from fosphenytoin, is a strong CYP3A4 inducer and can substantially lower ranolazine levels, causing loss of antianginal effect. Ranolazine labeling contraindicates CYP3A inducers.
How serious is the interaction between Fosphenytoin and Ranolazine?
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 another antianginal. Use a different anticonvulsant if the patient needs ranolazine.
What other medicines interact with Ranolazine?
MediHelp also lists interactions of Ranolazine with, for example, Adagrasib, Amobarbital, Apalutamide. The full list is on the Ranolazine 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。
