Drug interactions
Amobarbital + Cobimetinib
Severity: Major
Amobarbital 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
Cobimetinib is a CYP3A4 substrate and amobarbital induces this enzyme. Co-use may reduce cobimetinib exposure and therapeutic effect.
What this interaction means in plain words
Amobarbital 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.
Amobarbital belongs to Central Nervous System; Cobimetinib belongs to Oncology.
Why it happens
CYP3A4 induction by amobarbital increases cobimetinib metabolism.
What to do
Avoid combining with strong or moderate CYP3A inducers and use an alternative sedative. Monitor for loss of efficacy if combined.
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 Amobarbital
- Amobarbital + Calcium / magnesium / potassium / sodium oxybates Contraindicated
- Amobarbital + Doravirine Contraindicated
- Amobarbital + Elbasvir / grazoprevir Contraindicated
- Amobarbital + Isavuconazonium Contraindicated
- Amobarbital + Isocarboxazid Contraindicated
- Amobarbital + Lonafarnib Contraindicated
Other interactions of Cobimetinib
- Cobimetinib + Efavirenz Contraindicated
- Cobimetinib + Posaconazole Contraindicated
- Apalutamide + Cobimetinib Major
- Aprepitant + Cobimetinib Major
- Bosentan + Cobimetinib Major
- Carbamazepine + Cobimetinib Major
Frequently asked questions
Can I take Amobarbital with Cobimetinib?
MediHelp rates the interaction as major. Amobarbital 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. Cobimetinib is a CYP3A4 substrate and amobarbital induces this enzyme. Co-use may reduce cobimetinib exposure and therapeutic effect.
How serious is the interaction between Amobarbital 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 combining with strong or moderate CYP3A inducers and use an alternative sedative. Monitor for loss of efficacy if combined.
What other medicines interact with Amobarbital?
MediHelp also lists interactions of Amobarbital with, for example, Calcium / magnesium / potassium / sodium oxybates, Doravirine, Elbasvir / grazoprevir. The full list is on the Amobarbital page.
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