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MediHelp Référence médicamenteuse

Interactions médicamenteuses

Bosentan + Norethisterone

Gravité: Majeure

Bosentan and Norethisterone: major interaction.

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Résumé

Bosentan may lower norethisterone exposure and reduce contraceptive reliability. Bosentan is also teratogenic, so contraceptive failure is a particular concern.

Ce que signifie cette interaction, en termes simples

Bosentan 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.

Bosentan belongs to Miscellaneous; Norethisterone belongs to Endocrine.

Niveau de preuve: Moderate

Pourquoi elle survient

Bosentan induces CYP3A4, increasing norethisterone clearance.

Conduite à tenir

Do not rely on hormonal contraception alone, and use an additional or alternative non-hormonal method. Perform pregnancy testing as required by bosentan labeling.

Questions à poser à votre pharmacien

  • 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.

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Questions fréquentes

Can I take Bosentan with Norethisterone?

MediHelp rates the interaction as major. Bosentan 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. Bosentan may lower norethisterone exposure and reduce contraceptive reliability. Bosentan is also teratogenic, so contraceptive failure is a particular concern.

How serious is the interaction between Bosentan 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: Do not rely on hormonal contraception alone, and use an additional or alternative non-hormonal method. Perform pregnancy testing as required by bosentan labeling.

What other medicines interact with Norethisterone?

MediHelp also lists interactions of Norethisterone with, for example, Acitretin, Amobarbital, Apalutamide. The full list is on the Norethisterone page.

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