Drug interactions
Eliglustat + Fexofenadine
Severity: Minor
Eliglustat 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
Eliglustat inhibits P-glycoprotein and may raise plasma concentrations of fexofenadine, which is a P-gp substrate. Fexofenadine has a wide safety margin, so the increase is usually of limited clinical consequence.
What this interaction means in plain words
Eliglustat 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.
Eliglustat belongs to Miscellaneous; Fexofenadine belongs to Respiratory.
Why it happens
Eliglustat inhibits P-glycoprotein efflux, increasing fexofenadine absorption and reducing its clearance.
What to do
No routine adjustment is needed; monitor for antihistamine adverse effects such as headache or dizziness and reduce the fexofenadine dose if they occur.
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
Other interactions of Eliglustat
- Amiodarone + Eliglustat Contraindicated
- Clarithromycin + Eliglustat Contraindicated
- Dronedarone + Eliglustat Contraindicated
- Eliglustat + Itraconazole Contraindicated
- Eliglustat + Ketoconazole Contraindicated
- Eliglustat + Pimozide Contraindicated
Frequently asked questions
Can I take Eliglustat with Fexofenadine?
MediHelp rates the interaction as minor. Eliglustat 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. Eliglustat inhibits P-glycoprotein and may raise plasma concentrations of fexofenadine, which is a P-gp substrate. Fexofenadine has a wide safety margin, so the increase is usually of limited clinical consequence.
How serious is the interaction between Eliglustat 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 adjustment is needed; monitor for antihistamine adverse effects such as headache or dizziness and reduce the fexofenadine dose if they occur.
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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