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相互作用

Belzutifan + Ethinyl estradiol-norgestimate

重症度: 重大

Belzutifan and Ethinyl estradiol-norgestimate: major interaction.

最終更新日

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概要

Belzutifan can induce CYP3A4 and lower hormonal contraceptive exposure, which may lead to contraceptive failure or breakthrough bleeding. Belzutifan is also teratogenic, so pregnancy prevention is important.

この相互作用をわかりやすく説明すると

Belzutifan and Ethinyl estradiol-norgestimate 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.

Belzutifan belongs to Miscellaneous; Ethinyl estradiol-norgestimate belongs to Endocrine.

エビデンスレベル: Moderate

なぜ起こるのか

Induction of CYP3A4 by belzutifan increases the metabolism of ethinyl estradiol and norgestimate.

対処法

Use a highly effective non-hormonal contraceptive during treatment and for the period given in the labeling after the last dose.

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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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、BelzutifanとEthinyl estradiol-norgestimate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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よくある質問

Can I take Belzutifan with Ethinyl estradiol-norgestimate?

MediHelp rates the interaction as major. Belzutifan and Ethinyl estradiol-norgestimate 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. Belzutifan can induce CYP3A4 and lower hormonal contraceptive exposure, which may lead to contraceptive failure or breakthrough bleeding. Belzutifan is also teratogenic, so pregnancy prevention is important.

How serious is the interaction between Belzutifan and Ethinyl estradiol-norgestimate?

MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Use a highly effective non-hormonal contraceptive during treatment and for the period given in the labeling after the last dose.

What other medicines interact with Ethinyl estradiol-norgestimate?

MediHelp also lists interactions of Ethinyl estradiol-norgestimate with, for example, Fezolinetant, Ombitasvir / paritaprevir / ritonavir and dasabuvir, Tranexamic acid. The full list is on the Ethinyl estradiol-norgestimate 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。

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