Drug interactions
Brivaracetam + Guanfacine
Severity: Moderate
Brivaracetam 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
Guanfacine commonly causes somnolence and fatigue, and brivaracetam can cause similar effects. Together they may cause more pronounced sedation and dizziness.
What this interaction means in plain words
Brivaracetam 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.
Brivaracetam belongs to Central Nervous System; Guanfacine belongs to Cardiovascular.
Why it happens
Additive CNS depressant effects; guanfacine acts as a central alpha-2A agonist and brivaracetam as an SV2A ligand.
What to do
Monitor for sedation, hypotension and dizziness, particularly during dose titration. Adjust the dose of either drug if daytime impairment occurs.
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 Brivaracetam
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 Brivaracetam with Guanfacine?
MediHelp rates the interaction as moderate. Brivaracetam 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. Guanfacine commonly causes somnolence and fatigue, and brivaracetam can cause similar effects. Together they may cause more pronounced sedation and dizziness.
How serious is the interaction between Brivaracetam 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 for sedation, hypotension and dizziness, particularly during dose titration. Adjust the dose of either drug if daytime impairment occurs.
What other medicines interact with Brivaracetam?
MediHelp also lists interactions of Brivaracetam with, for example, Benzhydrocodone / acetaminophen, Sodium oxybate, Acetaminophen / phenyltoloxamine. The full list is on the Brivaracetam page.
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