相互作用
Drospirenone + Fosamprenavir
重症度: 重大
Drospirenone and Fosamprenavir: major interaction.
最終更新日
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概要
Fosamprenavir (as amprenavir) alters hormonal contraceptive exposure and can reduce amprenavir levels; combining may compromise contraceptive efficacy and antiretroviral exposure. Hormonal contraceptive concentrations are changed unpredictably, and drospirenone may raise potassium.
この相互作用をわかりやすく説明すると
Drospirenone and Fosamprenavir 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
Fosamprenavir/ritonavir modulates CYP3A4 and other enzymes, altering metabolism of the contraceptive hormones.
対処法
Avoid hormonal contraceptives with fosamprenavir where possible and use non-hormonal or alternative methods. If used, monitor potassium and contraceptive efficacy.
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、DrospirenoneとFosamprenavir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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Drospirenoneのその他の相互作用
よくある質問
Can I take Drospirenone with Fosamprenavir?
MediHelp rates the interaction as major. Drospirenone and Fosamprenavir 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. Fosamprenavir (as amprenavir) alters hormonal contraceptive exposure and can reduce amprenavir levels; combining may compromise contraceptive efficacy and antiretroviral exposure. Hormonal contraceptive concentrations are changed unpredictably, and drospirenone may raise potassium.
How serious is the interaction between Drospirenone and Fosamprenavir?
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 hormonal contraceptives with fosamprenavir where possible and use non-hormonal or alternative methods. If used, monitor potassium and contraceptive efficacy.
What other medicines interact with Drospirenone?
MediHelp also lists interactions of Drospirenone with, for example, Belzutifan, Bosentan, Carbamazepine. The full list is on the Drospirenone 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。
