Drug interactions
Brexpiprazole + Methsuximide
Severity: Moderate
Brexpiprazole 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 can cause drowsiness and dizziness, so combined use may increase sedation and impair coordination. Methsuximide's active metabolite may also modestly induce CYP3A4, which could lower brexpiprazole exposure, though this is less well characterized.
What this interaction means in plain words
Brexpiprazole 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.
Brexpiprazole belongs to Central Nervous System; Methsuximide belongs to Central Nervous System.
Why it happens
Additive CNS depression; possible weak CYP3A4 induction by methsuximide is not well established.
What to do
Monitor for sedation and for loss of antipsychotic efficacy when methsuximide is started or stopped. Adjust brexpiprazole dose according to clinical response.
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 Brexpiprazole
Other interactions of Methsuximide
- Amisulpride + Methsuximide Moderate
- Amobarbital + Methsuximide Moderate
- Apalutamide + Methsuximide Moderate
- Asenapine + Methsuximide Moderate
- Brivaracetam + Methsuximide Moderate
- Cariprazine + Methsuximide Moderate
Frequently asked questions
Can I take Brexpiprazole with Methsuximide?
MediHelp rates the interaction as moderate. Brexpiprazole 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 can cause drowsiness and dizziness, so combined use may increase sedation and impair coordination. Methsuximide's active metabolite may also modestly induce CYP3A4, which could lower brexpiprazole exposure, though this is less well characterized.
How serious is the interaction between Brexpiprazole 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: Monitor for sedation and for loss of antipsychotic efficacy when methsuximide is started or stopped. Adjust brexpiprazole dose according to clinical response.
What other medicines interact with Brexpiprazole?
MediHelp also lists interactions of Brexpiprazole with, for example, Alfentanil, Amisulpride, Apalutamide. The full list is on the Brexpiprazole page.
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