相互作用
Cimetidine + Dihydroergotamine intranasal
重症度: 重大
Cimetidine and Dihydroergotamine intranasal: major interaction.
最終更新日
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概要
Cimetidine may increase systemic dihydroergotamine exposure after intranasal dosing. This can contribute to ergotism with vasospasm and ischemia.
この相互作用をわかりやすく説明すると
Cimetidine and Dihydroergotamine intranasal can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
なぜ起こるのか
Cimetidine inhibits CYP3A4-mediated metabolism of dihydroergotamine.
対処法
Avoid the combination where possible and use famotidine instead. If unavoidable, monitor for peripheral ischemia symptoms and reduce exposure to the ergot.
薬剤師に尋ねること
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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、CimetidineとDihydroergotamine intranasal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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Cimetidineのその他の相互作用
よくある質問
Can I take Cimetidine with Dihydroergotamine intranasal?
MediHelp rates the interaction as major. Cimetidine and Dihydroergotamine intranasal can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Cimetidine may increase systemic dihydroergotamine exposure after intranasal dosing. This can contribute to ergotism with vasospasm and ischemia.
How serious is the interaction between Cimetidine and Dihydroergotamine intranasal?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid the combination where possible and use famotidine instead. If unavoidable, monitor for peripheral ischemia symptoms and reduce exposure to the ergot.
What other medicines interact with Cimetidine?
MediHelp also lists interactions of Cimetidine with, for example, Dofetilide, Fezolinetant, Alfentanil. The full list is on the Cimetidine 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。
