Drug interactions
Asenapine transdermal + Fexofenadine
Severity: Minor
Asenapine transdermal and Fexofenadine: minor 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
Fexofenadine is minimally sedating, so additive sedation with an antipsychotic is unlikely to be significant. Any effect would mainly reflect the sedative properties of asenapine.
What this interaction means in plain words
Asenapine transdermal and Fexofenadine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Possible additive CNS depression, which is minimal because fexofenadine does not cross the blood-brain barrier appreciably.
What to do
No routine action beyond counseling about drowsiness from the antipsychotic.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Fexofenadine
- Danicopan + Fexofenadine Moderate
- Erdafitinib + Fexofenadine Moderate
- Fexofenadine + Glecaprevir / pibrentasvir Moderate
- Fexofenadine + Grapefruit Moderate
- Fexofenadine + Juice Moderate
- Acrivastine + Fexofenadine Minor
Frequently asked questions
Can I take Asenapine transdermal with Fexofenadine?
MediHelp rates the interaction as minor. Asenapine transdermal and Fexofenadine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Fexofenadine is minimally sedating, so additive sedation with an antipsychotic is unlikely to be significant. Any effect would mainly reflect the sedative properties of asenapine.
How serious is the interaction between Asenapine transdermal and Fexofenadine?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No routine action beyond counseling about drowsiness from the antipsychotic.
What other medicines interact with Fexofenadine?
MediHelp also lists interactions of Fexofenadine with, for example, Danicopan, Erdafitinib, Glecaprevir / pibrentasvir. The full list is on the Fexofenadine page.
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