Drug interactions
Brexpiprazole + Doxylamine
Severity: Moderate
Brexpiprazole and Doxylamine: 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
Doxylamine is a strongly sedating antihistamine and brexpiprazole can also cause somnolence. Together they may markedly increase drowsiness and next-day impairment.
What this interaction means in plain words
Brexpiprazole and Doxylamine 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; Doxylamine belongs to Respiratory.
Why it happens
Additive CNS depression via H1 antagonism and antipsychotic sedation.
What to do
Advise the patient on additive sedation and avoidance of driving until response is known. Consider non-sedating options for sleep or allergy.
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 Doxylamine
Frequently asked questions
Can I take Brexpiprazole with Doxylamine?
MediHelp rates the interaction as moderate. Brexpiprazole and Doxylamine 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. Doxylamine is a strongly sedating antihistamine and brexpiprazole can also cause somnolence. Together they may markedly increase drowsiness and next-day impairment.
How serious is the interaction between Brexpiprazole and Doxylamine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Advise the patient on additive sedation and avoidance of driving until response is known. Consider non-sedating options for sleep or allergy.
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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