Drug interactions
Cobimetinib + Netupitant-palonosetron
Severity: Major
Cobimetinib and Netupitant-palonosetron: 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
Netupitant inhibits CYP3A4 and can increase cobimetinib exposure. This may increase toxicities such as hemorrhage, rhabdomyolysis, retinopathy and liver injury.
What this interaction means in plain words
Cobimetinib and Netupitant-palonosetron 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.
Cobimetinib belongs to Oncology; Netupitant-palonosetron belongs to Gastrointestinal Tract.
Why it happens
CYP3A4 inhibition by netupitant reduces cobimetinib clearance.
What to do
Prefer an antiemetic that does not inhibit CYP3A4. If short-term use is unavoidable, reduce cobimetinib to the labeled dose for moderate inhibitors and monitor for toxicity.
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 Netupitant-palonosetron
- Apomorphine + Netupitant-palonosetron Contraindicated
- Flibanserin + Netupitant-palonosetron Contraindicated
- Apalutamide + Netupitant-palonosetron Major
- Avapritinib + Netupitant-palonosetron Major
- Carbamazepine + Netupitant-palonosetron Major
- Encorafenib + Netupitant-palonosetron Major
Other interactions of Cobimetinib
- Cobimetinib + Efavirenz Contraindicated
- Cobimetinib + Posaconazole Contraindicated
- Amobarbital + Cobimetinib Major
- Apalutamide + Cobimetinib Major
- Aprepitant + Cobimetinib Major
- Bosentan + Cobimetinib Major
Frequently asked questions
Can I take Cobimetinib with Netupitant-palonosetron?
MediHelp rates the interaction as major. Cobimetinib and Netupitant-palonosetron 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. Netupitant inhibits CYP3A4 and can increase cobimetinib exposure. This may increase toxicities such as hemorrhage, rhabdomyolysis, retinopathy and liver injury.
How serious is the interaction between Cobimetinib and Netupitant-palonosetron?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Prefer an antiemetic that does not inhibit CYP3A4. If short-term use is unavoidable, reduce cobimetinib to the labeled dose for moderate inhibitors and monitor for toxicity.
What other medicines interact with Netupitant-palonosetron?
MediHelp also lists interactions of Netupitant-palonosetron with, for example, Apomorphine, Flibanserin, Apalutamide. The full list is on the Netupitant-palonosetron page.
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