Drug interactions
Carbamazepine + Istradefylline
Severity: Major
Carbamazepine and Istradefylline: 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
Carbamazepine reduces istradefylline exposure, potentially lessening its benefit in Parkinson's disease off episodes.
What this interaction means in plain words
Carbamazepine and Istradefylline 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.
Carbamazepine belongs to Central Nervous System; Istradefylline belongs to Central Nervous System.
Why it happens
Carbamazepine induces CYP3A4, increasing istradefylline clearance.
What to do
Avoid combination per labeling and use an alternative anticonvulsant. Monitor motor 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 Carbamazepine
- Artemether / lumefantrine + Carbamazepine Contraindicated
- Cabotegravir + Carbamazepine Contraindicated
- Carbamazepine + Delamanid Contraindicated
- Carbamazepine + Dienogest / estradiol valerate Contraindicated
- Carbamazepine + Doravirine Contraindicated
- Carbamazepine + Elbasvir / grazoprevir Contraindicated
Other interactions of Istradefylline
Frequently asked questions
Can I take Carbamazepine with Istradefylline?
MediHelp rates the interaction as major. Carbamazepine and Istradefylline 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. Carbamazepine reduces istradefylline exposure, potentially lessening its benefit in Parkinson's disease off episodes.
How serious is the interaction between Carbamazepine and Istradefylline?
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 combination per labeling and use an alternative anticonvulsant. Monitor motor response if unavoidable.
What other medicines interact with Carbamazepine?
MediHelp also lists interactions of Carbamazepine with, for example, Artemether / lumefantrine, Cabotegravir, Delamanid. The full list is on the Carbamazepine page.
Full monographs, dosing and an interaction checker in the MediHelp app
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