Drug interactions
Eslicarbazepine + Guanfacine
Severity: Moderate
Eslicarbazepine and Guanfacine: 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
Eslicarbazepine may lower guanfacine concentrations and weaken its blood pressure or ADHD effect. Stronger CYP3A4 inducers markedly reduce guanfacine exposure, and a smaller effect is expected with eslicarbazepine.
What this interaction means in plain words
Eslicarbazepine and Guanfacine 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.
Eslicarbazepine belongs to Central Nervous System; Guanfacine belongs to Cardiovascular.
Why it happens
CYP3A4 induction increases the metabolism of guanfacine.
What to do
Monitor blood pressure and symptom control, and increase the guanfacine dose if response is lost. Reassess the dose when eslicarbazepine is stopped.
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 Eslicarbazepine
- Eslicarbazepine + Mavacamten Contraindicated
- Eslicarbazepine + Rilpivirine Contraindicated
- Artemether / lumefantrine + Eslicarbazepine Major
- Avapritinib + Eslicarbazepine Major
- Bedaquiline + Eslicarbazepine Major
- Benzhydrocodone / acetaminophen + Eslicarbazepine Major
Other interactions of Guanfacine
- Clonidine + Guanfacine Major
- Guanfacine + Lofexidine Major
- Aldesleukin + Guanfacine Moderate
- Amiodarone + Guanfacine Moderate
- Amisulpride + Guanfacine Moderate
- Amitriptyline + Guanfacine Moderate
Frequently asked questions
Can I take Eslicarbazepine with Guanfacine?
MediHelp rates the interaction as moderate. Eslicarbazepine and Guanfacine 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. Eslicarbazepine may lower guanfacine concentrations and weaken its blood pressure or ADHD effect. Stronger CYP3A4 inducers markedly reduce guanfacine exposure, and a smaller effect is expected with eslicarbazepine.
How serious is the interaction between Eslicarbazepine and Guanfacine?
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 blood pressure and symptom control, and increase the guanfacine dose if response is lost. Reassess the dose when eslicarbazepine is stopped.
What other medicines interact with Eslicarbazepine?
MediHelp also lists interactions of Eslicarbazepine with, for example, Mavacamten, Rilpivirine, Artemether / lumefantrine. The full list is on the Eslicarbazepine page.
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