Venlafaxine and Alprazolam Interaction
Drug interaction information between Venlafaxine and Alprazolam.
Venlafaxine and Alprazolam have a documented minor interaction in FDA labeling.
FDA drug labeling documents a minor-severity interaction between Venlafaxine and Alprazolam. Major interactions are generally avoided, moderate ones may need monitoring or a dose adjustment, and minor ones are usually low-risk. This page shows the documented mechanism and guidance. Label-documented interactions are not a complete safety review, so always confirm your own medications with a pharmacist or doctor. Educational information, not medical advice.
How They Interact
Venlafaxine does not change how the body breaks down alprazolam. Because of this, the two drugs do not have a significant interaction with each other.
What To Do
You can typically take these two medicines together without needing a dose change. Always follow your doctor's specific advice.
FDA Label Information
This finding was confirmed in vivo by clinical drug interaction studies in which venlafaxine did not inhibit the metabolism of several CYP3A4 substrates, including alprazolam, diazepam, and terfenadine.
Venlafaxine Also Interacts With
- Aspirin moderate
- Phenelzine moderate
- Metoprolol minor
- Fluoxetine minor
- Warfarin minor
Alprazolam Also Interacts With
- Ketoconazole moderate
- Clarithromycin moderate
- Itraconazole moderate
- Digoxin moderate
- Aprepitant moderate
Frequently Asked Questions
Can I take Venlafaxine and Alprazolam together?
This is a minor interaction. You can typically take these two medicines together without needing a dose change. Always follow your doctor's specific advice.
How serious is the interaction between Venlafaxine and Alprazolam?
This interaction is classified as "minor" severity by the FDA. Minor interactions are unlikely to cause significant problems but should still be mentioned to your healthcare provider.
Why do Venlafaxine and Alprazolam interact?
Venlafaxine does not change how the body breaks down alprazolam. Because of this, the two drugs do not have a significant interaction with each other.
Understanding the Venlafaxine and Alprazolam Interaction
FDA-approved prescribing information for these two drugs flags their combination as a minor-severity interaction. Venlafaxine belongs to the Serotonin-Norepinephrine Reuptake Inhibitor (SNRI) class and Alprazolam belongs to the Benzodiazepine class - two categories that can collide when co-prescribed. The mechanism described in FDA labeling is: Venlafaxine does not change how the body breaks down alprazolam. Severity tiers matter: major flags generally advise avoidance, moderate flags often require monitoring or dose adjustment, and minor flags may only call for awareness.
Context around a specific patient determines real-world impact. Venlafaxine has 22 total documented interactions on file in this dataset, and Alprazolam has 27. Each additional medication compounds the interaction surface, which is why pharmacists run full-profile checks rather than evaluating one pair at a time. FDA-derived guidance for this pair is: You can typically take these two medicines together without needing a dose change. Timing of doses, renal and hepatic function, age, and other concurrent prescriptions all shape whether a labeled interaction matters clinically.
An interaction flag is not a verdict. A large share of labeled interactions are managed routinely in clinical practice, the fix may be as simple as spacing doses or adding a monitoring test. Others require the prescriber to choose a different medication entirely. This page surfaces FDA-sourced labeling and openFDA data for educational purposes only; it is not medical advice and cannot account for your full clinical picture. Never start, stop, or adjust either Venlafaxine or Alprazolam based on a web page, speak with your prescriber or pharmacist before making any change.
Sources: FDA Drug Labels (SPL) via openFDA (2026). This is for informational purposes only and is not medical advice. Always consult your healthcare provider about drug interactions.
Read our methodology - how this data is sourced, computed, and verified.