Drug interactions
Diazepam intranasal + Fexofenadine
Severity: Minor
Diazepam intranasal 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 any additive effect with diazepam is expected to be small. Sedation from diazepam remains the main concern.
What this interaction means in plain words
Diazepam intranasal 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
Theoretical additive CNS depression, limited by negligible central penetration of fexofenadine.
What to do
No specific action is needed beyond counseling about diazepam-related drowsiness.
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 Diazepam intranasal with Fexofenadine?
MediHelp rates the interaction as minor. Diazepam intranasal 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 any additive effect with diazepam is expected to be small. Sedation from diazepam remains the main concern.
How serious is the interaction between Diazepam intranasal 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 specific action is needed beyond counseling about diazepam-related drowsiness.
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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