Drug interactions
Bosentan + Cobimetinib
Severity: Major
Bosentan and Cobimetinib: major 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, a moderate CYP3A4 inducer, may markedly reduce cobimetinib exposure and thus its anticancer activity.
What this interaction means in plain words
Bosentan and Cobimetinib 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; Cobimetinib belongs to Oncology.
Why it happens
CYP3A4 induction by bosentan increases cobimetinib clearance.
What to do
Avoid coadministration; use an alternative to bosentan or consider a different therapy, and monitor tumor response if unavoidable.
What to ask your pharmacist
- 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?
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Other interactions of Bosentan
- Bosentan + Cyclosporin Contraindicated
- Bosentan + Cyclosporine Contraindicated
- Bosentan + Glyburide Contraindicated
- Bosentan + Glyburide-metformin Contraindicated
- Bosentan + Lonafarnib Contraindicated
- Bosentan + Sparsentan Contraindicated
Other interactions of Cobimetinib
- Cobimetinib + Efavirenz Contraindicated
- Cobimetinib + Posaconazole Contraindicated
- Amobarbital + Cobimetinib Major
- Apalutamide + Cobimetinib Major
- Aprepitant + Cobimetinib Major
- Carbamazepine + Cobimetinib Major
Frequently asked questions
Can I take Bosentan with Cobimetinib?
MediHelp rates the interaction as major. Bosentan and Cobimetinib 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, a moderate CYP3A4 inducer, may markedly reduce cobimetinib exposure and thus its anticancer activity.
How serious is the interaction between Bosentan and Cobimetinib?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid coadministration; use an alternative to bosentan or consider a different therapy, and monitor tumor response if unavoidable.
What other medicines interact with Bosentan?
MediHelp also lists interactions of Bosentan with, for example, Cyclosporin, Cyclosporine, Glyburide. The full list is on the Bosentan page.
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