Drug interactions
Bosentan + Pirtobrutinib
Severity: Moderate
Bosentan and Pirtobrutinib: 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
Pirtobrutinib is cleared by CYP3A4, and inducers lower its exposure. Bosentan, a moderate inducer, may reduce its efficacy in B-cell malignancies.
What this interaction means in plain words
Bosentan and Pirtobrutinib 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 belongs to Miscellaneous; Pirtobrutinib belongs to Oncology.
Why it happens
Bosentan induces CYP3A4, increasing pirtobrutinib metabolism.
What to do
Avoid if possible. If it cannot be avoided, increase the pirtobrutinib dose as directed in its labeling and monitor response.
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
Other interactions of Pirtobrutinib
Frequently asked questions
Can I take Bosentan with Pirtobrutinib?
MediHelp rates the interaction as moderate. Bosentan and Pirtobrutinib 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. Pirtobrutinib is cleared by CYP3A4, and inducers lower its exposure. Bosentan, a moderate inducer, may reduce its efficacy in B-cell malignancies.
How serious is the interaction between Bosentan and Pirtobrutinib?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid if possible. If it cannot be avoided, increase the pirtobrutinib dose as directed in its labeling and monitor response.
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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