藥物交互作用
Amobarbital + Norethisterone
嚴重程度: 嚴重
Amobarbital and Norethisterone: major interaction.
最後更新
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本頁的臨床內容僅提供英文版。
摘要
Barbiturates induce hepatic enzymes and can lower norethisterone concentrations. This may lead to breakthrough bleeding and contraceptive failure.
用白話說明這項交互作用的意義
Amobarbital and Norethisterone 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.
Amobarbital belongs to Central Nervous System; Norethisterone belongs to Endocrine.
為什麼會發生
Amobarbital induces CYP3A4 and other hepatic enzymes, increasing the clearance of norethisterone.
處置方式
Use a non-hormonal or non-enzyme-dependent contraceptive method such as a copper IUD or injectable. Continue extra protection for several weeks after stopping the barbiturate.
可向藥師詢問的問題
- 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?
Norethisterone 的其他交互作用
Amobarbital 的其他交互作用
常見問題
Can I take Amobarbital with Norethisterone?
MediHelp rates the interaction as major. Amobarbital and Norethisterone 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. Barbiturates induce hepatic enzymes and can lower norethisterone concentrations. This may lead to breakthrough bleeding and contraceptive failure.
How serious is the interaction between Amobarbital and Norethisterone?
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 non-hormonal or non-enzyme-dependent contraceptive method such as a copper IUD or injectable. Continue extra protection for several weeks after stopping the barbiturate.
What other medicines interact with Norethisterone?
MediHelp also lists interactions of Norethisterone with, for example, Acitretin, Apalutamide, Belzutifan. The full list is on the Norethisterone page.
在 MediHelp App 中取得完整藥品專論、劑量資訊與交互作用檢查
在 MediHelp App 中開啟完整參考資料、檢查多種藥物間的交互作用，並使用劑量工具。
