Drug interactions
Armodafinil + Carbamazepine
Severity: Moderate
Armodafinil and Carbamazepine: 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
Carbamazepine is a strong CYP3A4 inducer that can lower armodafinil levels, while armodafinil's weak induction may also reduce carbamazepine levels. Either drug may lose some effectiveness, which matters for seizure control with carbamazepine.
What this interaction means in plain words
Armodafinil and Carbamazepine 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.
Armodafinil belongs to Central Nervous System; Carbamazepine belongs to Central Nervous System.
Why it happens
Mutual CYP3A4 induction, with carbamazepine also being an autoinducer and armodafinil a weak inducer.
What to do
Monitor carbamazepine serum concentrations and seizure control when armodafinil is started or stopped. Titrate armodafinil to clinical response as higher doses may be needed.
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 Armodafinil
Other interactions of Carbamazepine
- Artemether / lumefantrine + Carbamazepine Contraindicated
- Cabotegravir + Carbamazepine Contraindicated
- Carbamazepine + Delamanid Contraindicated
- Carbamazepine + Dienogest / estradiol valerate Contraindicated
- Carbamazepine + Doravirine Contraindicated
- Carbamazepine + Elbasvir / grazoprevir Contraindicated
Frequently asked questions
Can I take Armodafinil with Carbamazepine?
MediHelp rates the interaction as moderate. Armodafinil and Carbamazepine 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. Carbamazepine is a strong CYP3A4 inducer that can lower armodafinil levels, while armodafinil's weak induction may also reduce carbamazepine levels. Either drug may lose some effectiveness, which matters for seizure control with carbamazepine.
How serious is the interaction between Armodafinil and Carbamazepine?
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 carbamazepine serum concentrations and seizure control when armodafinil is started or stopped. Titrate armodafinil to clinical response as higher doses may be needed.
What other medicines interact with Armodafinil?
MediHelp also lists interactions of Armodafinil with, for example, Avapritinib, Elacestrant, Elbasvir / grazoprevir. The full list is on the Armodafinil page.
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