Drug interactions
Fexofenadine + Gabapentin enacarbil
Severity: Minor
Fexofenadine and Gabapentin enacarbil: 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
Gabapentin enacarbil, a prodrug of gabapentin, causes somnolence and dizziness and can contribute to respiratory depression when combined with other CNS depressants. Fexofenadine has little sedative activity, so the added risk is small.
What this interaction means in plain words
Fexofenadine and Gabapentin enacarbil 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 belongs to Respiratory; Gabapentin enacarbil belongs to Central Nervous System.
Why it happens
Possible additive CNS depression, although fexofenadine has minimal sedative effects.
What to do
No dose change is usually needed; monitor for excessive drowsiness, especially in elderly patients or those with respiratory disease.
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 Gabapentin enacarbil
Frequently asked questions
Can I take Fexofenadine with Gabapentin enacarbil?
MediHelp rates the interaction as minor. Fexofenadine and Gabapentin enacarbil have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Gabapentin enacarbil, a prodrug of gabapentin, causes somnolence and dizziness and can contribute to respiratory depression when combined with other CNS depressants. Fexofenadine has little sedative activity, so the added risk is small.
How serious is the interaction between Fexofenadine and Gabapentin enacarbil?
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 dose change is usually needed; monitor for excessive drowsiness, especially in elderly patients or those with respiratory disease.
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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