Drug interactions
Levetiracetam + Methsuximide
Severity: Moderate
Levetiracetam and Methsuximide: 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
Both agents commonly cause somnolence, dizziness and ataxia, so combined use may increase sedation and impair coordination. The effect is usually most noticeable when either drug is started or the dose is raised.
What this interaction means in plain words
Levetiracetam and Methsuximide 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.
Levetiracetam belongs to Central Nervous System; Methsuximide belongs to Central Nervous System.
Why it happens
Additive central nervous system depressant effects of two antiseizure drugs.
What to do
Titrate doses gradually and monitor for excessive drowsiness and unsteadiness. Advise patients to avoid driving until the response to the combination is known.
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 Levetiracetam
Other interactions of Methsuximide
- Amisulpride + Methsuximide Moderate
- Amobarbital + Methsuximide Moderate
- Apalutamide + Methsuximide Moderate
- Asenapine + Methsuximide Moderate
- Brexpiprazole + Methsuximide Moderate
- Brivaracetam + Methsuximide Moderate
Frequently asked questions
Can I take Levetiracetam with Methsuximide?
MediHelp rates the interaction as moderate. Levetiracetam and Methsuximide 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. Both agents commonly cause somnolence, dizziness and ataxia, so combined use may increase sedation and impair coordination. The effect is usually most noticeable when either drug is started or the dose is raised.
How serious is the interaction between Levetiracetam and Methsuximide?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Titrate doses gradually and monitor for excessive drowsiness and unsteadiness. Advise patients to avoid driving until the response to the combination is known.
What other medicines interact with Levetiracetam?
MediHelp also lists interactions of Levetiracetam with, for example, Oliceridine, Opium tincture, Sodium oxybate. The full list is on the Levetiracetam page.
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