Drug interactions
Bosentan + Conjugated estrogens
Severity: Moderate
Bosentan and Conjugated estrogens: moderate interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Bosentan may reduce estrogen exposure through CYP3A4 induction, potentially reducing symptom relief and endometrial protection in women with a uterus.
What this interaction means in plain words
Bosentan and Conjugated estrogens can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Why it happens
Bosentan induces CYP3A4, increasing estrogen metabolism.
What to do
Monitor menopausal symptoms and bleeding patterns, and adjust the estrogen dose if efficacy declines.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Bosentan and Conjugated estrogens, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 7 days on the web. No card needed.
Other interactions of Bosentan
- Bosentan + Cyclosporin Contraindicated
- Bosentan + Glibenclamide Contraindicated
- Bosentan + Glyburide-metformin Contraindicated
- Bosentan + Lonafarnib Contraindicated
- Bosentan + Sparsentan Contraindicated
- Artemether / lumefantrine + Bosentan Major
Frequently asked questions
Can I take Bosentan with Conjugated estrogens?
MediHelp rates the interaction as moderate. Bosentan and Conjugated estrogens can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Bosentan may reduce estrogen exposure through CYP3A4 induction, potentially reducing symptom relief and endometrial protection in women with a uterus.
How serious is the interaction between Bosentan and Conjugated estrogens?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor menopausal symptoms and bleeding patterns, and adjust the estrogen dose if efficacy declines.
What other medicines interact with Bosentan?
MediHelp also lists interactions of Bosentan with, for example, Cyclosporin, Glibenclamide, Glyburide-metformin. The full list is on the Bosentan page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
