Desvenlafaxine and Linezolid Interaction
Drug interaction information between Desvenlafaxine and Linezolid.
Desvenlafaxine and Linezolid have a documented moderate interaction in FDA labeling.
FDA drug labeling documents a moderate-severity interaction between Desvenlafaxine and Linezolid. 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
Both of these drugs increase the levels of a brain chemical called serotonin. If serotonin levels get too high, it can cause a serious and potentially life-threatening reaction called serotonin syndrome.
What To Do
Avoid taking these two medications at the same time. If you are prescribed linezolid, your doctor will likely have you stop taking desvenlafaxine temporarily.
FDA Label Information
• In a patient who is being treated with linezolid or intravenous methylene blue. Examples selegiline, tranylcypromine, isocarboxazid, phenelzine, linezolid, methylene blue Other Serotonergic Drugs Clinical Impact Concomitant use of PRISTIQ with other serotonergic drugs increases the risk of serotonin syndrome.
Desvenlafaxine Also Interacts With
- Aspirin moderate
- Phenelzine moderate
- Tranylcypromine moderate
- Selegiline moderate
- Warfarin moderate
Linezolid Also Interacts With
- Citalopram major
- Escitalopram major
- Mirtazapine major
- Paroxetine major
- Safinamide major
Frequently Asked Questions
Can I take Desvenlafaxine and Linezolid together?
This is a moderate interaction. Avoid taking these two medications at the same time. If you are prescribed linezolid, your doctor will likely have you stop taking desvenlafaxine temporarily.
How serious is the interaction between Desvenlafaxine and Linezolid?
This interaction is classified as "moderate" severity by the FDA. Moderate interactions may worsen your condition or change how your medications work.
Why do Desvenlafaxine and Linezolid interact?
Both of these drugs increase the levels of a brain chemical called serotonin. If serotonin levels get too high, it can cause a serious and potentially life-threatening reaction called serotonin syndrome.
Understanding the Desvenlafaxine and Linezolid Interaction
FDA-approved prescribing information for these two drugs flags their combination as a moderate-severity interaction. Desvenlafaxine belongs to the Serotonin-Norepinephrine Reuptake Inhibitor (SNRI) class and Linezolid belongs to the Oxazolidinone Antibiotic class - two categories that can collide when co-prescribed. The mechanism described in FDA labeling is: Both of these drugs increase the levels of a brain chemical called serotonin. 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. Desvenlafaxine has 19 total documented interactions on file in this dataset, and Linezolid has 29. 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: Avoid taking these two medications at the same time. 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 Desvenlafaxine or Linezolid 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.