相互作用
Conivaptan + Ketoconazole
重症度: 併用禁忌
Conivaptan and Ketoconazole: contraindicated interaction.
最終更新日 出典: US FDA label
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概要
Ketoconazole markedly increases conivaptan exposure and the combination is contraindicated in labeling. Excess conivaptan can cause overly rapid rise in serum sodium, with risk of osmotic demyelination, as well as hypotension and infusion-site reactions. Patients with hyponatremia are most at risk.
この相互作用をわかりやすく説明すると
Conivaptan and Ketoconazole 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.
なぜ起こるのか
Ketoconazole is a strong CYP3A4 inhibitor, and conivaptan is a CYP3A4 substrate, so clearance falls and exposure increases.
対処法
Do not use together. If an azole antifungal is needed, consider one without strong CYP3A4 inhibition, or select alternative hyponatremia therapy.
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?
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アカウントを作成してPro+トライアルを始めると、ConivaptanとKetoconazole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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参考文献
Ketoconazoleのその他の相互作用
よくある質問
Can I take Conivaptan with Ketoconazole?
MediHelp rates the interaction as contraindicated. Conivaptan and Ketoconazole 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. Ketoconazole markedly increases conivaptan exposure and the combination is contraindicated in labeling. Excess conivaptan can cause overly rapid rise in serum sodium, with risk of osmotic demyelination, as well as hypotension and infusion-site reactions. Patients with hyponatremia are most at risk.
How serious is the interaction between Conivaptan and Ketoconazole?
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 use together. If an azole antifungal is needed, consider one without strong CYP3A4 inhibition, or select alternative hyponatremia therapy.
What other medicines interact with Ketoconazole?
MediHelp also lists interactions of Ketoconazole with, for example, Alfuzosin, Alprazolam, Avanafil. The full list is on the Ketoconazole 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。
