Drug interactions
Fexofenadine + Tenapanor
Severity: Minor
Fexofenadine and Tenapanor: 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
Tenapanor inhibits intestinal OATP2B1, which contributes to fexofenadine absorption, and may reduce its exposure. This could blunt antihistamine efficacy.
What this interaction means in plain words
Fexofenadine and Tenapanor 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; Tenapanor belongs to Gastrointestinal Tract.
Why it happens
Inhibition of intestinal OATP2B1 uptake reduces oral absorption of fexofenadine.
What to do
Monitor for reduced allergy symptom control; consider separating doses or using an alternative antihistamine if efficacy declines.
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 Tenapanor
- Enalapril-hydrochlorothiazide + Tenapanor Moderate
- Enalapril + Tenapanor Moderate
- Rosuvastatin + Tenapanor Moderate
- Atorvastatin + Tenapanor Minor
- Bosentan + Tenapanor Minor
- Fluvastatin + Tenapanor Minor
Frequently asked questions
Can I take Fexofenadine with Tenapanor?
MediHelp rates the interaction as minor. Fexofenadine and Tenapanor have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Tenapanor inhibits intestinal OATP2B1, which contributes to fexofenadine absorption, and may reduce its exposure. This could blunt antihistamine efficacy.
How serious is the interaction between Fexofenadine and Tenapanor?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for reduced allergy symptom control; consider separating doses or using an alternative antihistamine if efficacy declines.
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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