相互作用
Belzutifan + Ethinyl estradiol-levonorgestrel
重症度: 重大
Belzutifan and Ethinyl estradiol-levonorgestrel: major interaction.
最終更新日
医療従事者向け・参照専用。このページは簡潔な要約であり、医学的助言ではなく、公式の添付文書や臨床判断に代わるものではありません。処方・調剤の前に必ず確認してください。
このページの臨床コンテンツは英語でのみ提供されています。
概要
Belzutifan induces CYP3A4 and can reduce hormonal contraceptive exposure, leading to contraceptive failure or breakthrough bleeding. Belzutifan is teratogenic, so pregnancy prevention is critical.
この相互作用をわかりやすく説明すると
Belzutifan and Ethinyl estradiol-levonorgestrel 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-levonorgestrel belongs to Endocrine.
なぜ起こるのか
CYP3A4 induction by belzutifan increases metabolism of ethinyl estradiol and levonorgestrel.
対処法
Use an effective nonhormonal contraceptive during treatment and for the period in labeling after the last dose. Do not rely on hormonal methods alone.
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、BelzutifanとEthinyl estradiol-levonorgestrel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
WebでPro+を14日間無料でお試し。カード登録不要。
Ethinyl estradiol-levonorgestrelのその他の相互作用
- Ethinyl estradiol-levonorgestrel + Fezolinetant 併用禁忌
- Ethinyl estradiol-levonorgestrel + Ombitasvir / paritaprevir / ritonavir and dasabuvir 併用禁忌
- Ethinyl estradiol-levonorgestrel + Tranexamic acid 併用禁忌
- Aminocaproic acid + Ethinyl estradiol-levonorgestrel 重大
- Amobarbital + Ethinyl estradiol-levonorgestrel 重大
- Anastrozole + Ethinyl estradiol-levonorgestrel 重大
Belzutifanのその他の相互作用
よくある質問
Can I take Belzutifan with Ethinyl estradiol-levonorgestrel?
MediHelp rates the interaction as major. Belzutifan and Ethinyl estradiol-levonorgestrel 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 induces CYP3A4 and can reduce hormonal contraceptive exposure, leading to contraceptive failure or breakthrough bleeding. Belzutifan is teratogenic, so pregnancy prevention is critical.
How serious is the interaction between Belzutifan and Ethinyl estradiol-levonorgestrel?
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 an effective nonhormonal contraceptive during treatment and for the period in labeling after the last dose. Do not rely on hormonal methods alone.
What other medicines interact with Ethinyl estradiol-levonorgestrel?
MediHelp also lists interactions of Ethinyl estradiol-levonorgestrel with, for example, Fezolinetant, Ombitasvir / paritaprevir / ritonavir and dasabuvir, Tranexamic acid. The full list is on the Ethinyl estradiol-levonorgestrel 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。
