Drug interactions
Bosentan + Sorafenib
Severity: Moderate
Bosentan and Sorafenib: 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 modestly lower sorafenib exposure. Reduced sorafenib levels could weaken antitumour effect, although sorafenib is cleared by both CYP3A4 oxidation and UGT1A9 glucuronidation, so the effect is expected to be limited.
What this interaction means in plain words
Bosentan and Sorafenib 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; Sorafenib belongs to Oncology.
Why it happens
Bosentan induces CYP3A4, increasing the oxidative metabolism of sorafenib.
What to do
Monitor for reduced tumour response when bosentan is started or stopped. Consider an alternative to bosentan if loss of sorafenib efficacy is suspected.
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 Sorafenib
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 Sorafenib?
MediHelp rates the interaction as moderate. Bosentan and Sorafenib 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 modestly lower sorafenib exposure. Reduced sorafenib levels could weaken antitumour effect, although sorafenib is cleared by both CYP3A4 oxidation and UGT1A9 glucuronidation, so the effect is expected to be limited.
How serious is the interaction between Bosentan and Sorafenib?
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 reduced tumour response when bosentan is started or stopped. Consider an alternative to bosentan if loss of sorafenib efficacy is suspected.
What other medicines interact with Sorafenib?
MediHelp also lists interactions of Sorafenib with, for example, Adagrasib, Amiodarone, Amisulpride. The full list is on the Sorafenib page.
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