Drug interactions
Bosentan + Estropipate
Severity: Moderate
Bosentan and Estropipate: 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 is a moderate CYP3A4 inducer and may speed up the breakdown of estrogens such as estropipate. Exposure to estrogen can fall, which may reduce symptom control or cause breakthrough bleeding.
What this interaction means in plain words
Bosentan and Estropipate 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 and increases the metabolic clearance of estrogens.
What to do
Monitor for loss of estrogen effect such as recurrent vasomotor symptoms or irregular bleeding, and increase the estropipate dose if needed.
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?
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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 Estropipate?
MediHelp rates the interaction as moderate. Bosentan and Estropipate 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 is a moderate CYP3A4 inducer and may speed up the breakdown of estrogens such as estropipate. Exposure to estrogen can fall, which may reduce symptom control or cause breakthrough bleeding.
How serious is the interaction between Bosentan and Estropipate?
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 for loss of estrogen effect such as recurrent vasomotor symptoms or irregular bleeding, and increase the estropipate dose if needed.
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.
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