Drug interactions
Cenobamate + Tamoxifen
Severity: Moderate
Cenobamate and Tamoxifen: 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
Cenobamate induces CYP3A4 and can lower concentrations of CYP3A4 substrates. Tamoxifen exposure could fall, potentially reducing its efficacy.
What this interaction means in plain words
Cenobamate and Tamoxifen 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.
Cenobamate belongs to Central Nervous System; Tamoxifen belongs to Endocrine.
Why it happens
Induction of CYP3A4 by cenobamate increases tamoxifen metabolism.
What to do
Monitor for reduced endocrine response and consider an alternative anticonvulsant or alternative endocrine therapy if clinically feasible.
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 Tamoxifen
- Amiodarone + Tamoxifen Major
- Anastrozole + Tamoxifen Major
- Bupropion + Tamoxifen Major
- Carbamazepine + Tamoxifen Major
- Cinacalcet + Tamoxifen Major
- Dacomitinib + Tamoxifen Major
Other interactions of Cenobamate
Frequently asked questions
Can I take Cenobamate with Tamoxifen?
MediHelp rates the interaction as moderate. Cenobamate and Tamoxifen 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. Cenobamate induces CYP3A4 and can lower concentrations of CYP3A4 substrates. Tamoxifen exposure could fall, potentially reducing its efficacy.
How serious is the interaction between Cenobamate and Tamoxifen?
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 endocrine response and consider an alternative anticonvulsant or alternative endocrine therapy if clinically feasible.
What other medicines interact with Tamoxifen?
MediHelp also lists interactions of Tamoxifen with, for example, Amiodarone, Anastrozole, Bupropion. The full list is on the Tamoxifen page.
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