Drug interactions
Buprenorphine long-acting + Fexofenadine
Severity: Minor
Buprenorphine long-acting 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
Buprenorphine causes sedation, but fexofenadine is minimally sedating, so a meaningful additive effect is unlikely.
What this interaction means in plain words
Buprenorphine long-acting 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 action beyond routine counseling about opioid 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 Buprenorphine long-acting with Fexofenadine?
MediHelp rates the interaction as minor. Buprenorphine long-acting 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. Buprenorphine causes sedation, but fexofenadine is minimally sedating, so a meaningful additive effect is unlikely.
How serious is the interaction between Buprenorphine long-acting 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 action beyond routine counseling about opioid 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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