相互作用
Fosphenytoin + Ledipasvir-sofosbuvir
重症度: 併用禁忌
Fosphenytoin and Ledipasvir-sofosbuvir: contraindicated interaction.
最終更新日
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概要
Fosphenytoin is converted to phenytoin, a potent inducer of intestinal P-glycoprotein and other enzymes, which can substantially lower sofosbuvir and ledipasvir exposure. This may lead to loss of antiviral efficacy and hepatitis C treatment failure or resistance.
この相互作用をわかりやすく説明すると
Fosphenytoin and Ledipasvir-sofosbuvir 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; Ledipasvir-sofosbuvir belongs to Anti Virals.
なぜ起こるのか
Phenytoin induces intestinal P-glycoprotein, reducing absorption and plasma concentrations of sofosbuvir and ledipasvir.
対処法
Do not co-administer. Switch to a non-inducing antiepileptic such as levetiracetam before starting the hepatitis C regimen, under neurology guidance.
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Ledipasvir-sofosbuvir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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Ledipasvir-sofosbuvir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 Ledipasvir-sofosbuvir?
MediHelp rates the interaction as contraindicated. Fosphenytoin and Ledipasvir-sofosbuvir 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 is converted to phenytoin, a potent inducer of intestinal P-glycoprotein and other enzymes, which can substantially lower sofosbuvir and ledipasvir exposure. This may lead to loss of antiviral efficacy and hepatitis C treatment failure or resistance.
How serious is the interaction between Fosphenytoin and Ledipasvir-sofosbuvir?
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 co-administer. Switch to a non-inducing antiepileptic such as levetiracetam before starting the hepatitis C regimen, under neurology guidance.
What other medicines interact with Ledipasvir-sofosbuvir?
MediHelp also lists interactions of Ledipasvir-sofosbuvir with, for example, Phenobarbital, Phenytoin, Rifampin. The full list is on the Ledipasvir-sofosbuvir 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。
