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Linezolid and Escitalopram Interaction

Drug interaction information between Linezolid and Escitalopram.

Linezolid and Escitalopram have a documented major interaction in FDA labeling.

FDA drug labeling documents a major-severity interaction between Linezolid and Escitalopram. 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.

Drug A

Linezolid

Oxazolidinone Antibiotic

Drug B

Escitalopram

Selective Serotonin Reuptake Inhibitor (SSRI)

How They Interact

Linezolid acts as a special type of medicine that stops the body from clearing serotonin, which can cause a dangerous reaction when mixed with escitalopram.

What To Do

This combination is not allowed and should be avoided to prevent serious health problems.

FDA Label Information

Intervention: Escitalopram is contraindicated in patients taking MAOIs, including MAOIs such as linezolid or intravenous methylene blue [ see Dosage and Administration (2.7) , Contraindications (4) , and Warnings and Precautions (5.2) ] Pimozide Clinical Impact: Concomitant use of racemic citalopram with pimozide increases plasma concentrations of pimozide, a drug with a narrow therapeutic index, and may increase the risk of QT prolongation and/or ventricular arrhythmias compared to use of racemic citalopram alone [ see Clinical Pharmacology (12.3) ].

Escitalopram Also Interacts With

View all Escitalopram interactions →

Frequently Asked Questions

Can I take Linezolid and Escitalopram together?

This is a major interaction. This combination is not allowed and should be avoided to prevent serious health problems.

How serious is the interaction between Linezolid and Escitalopram?

This interaction is classified as "major" severity by the FDA. Major interactions may be life-threatening or cause serious side effects.

Why do Linezolid and Escitalopram interact?

Linezolid acts as a special type of medicine that stops the body from clearing serotonin, which can cause a dangerous reaction when mixed with escitalopram.

Understanding the Linezolid and Escitalopram Interaction

FDA-approved prescribing information for these two drugs flags their combination as a major-severity interaction. Linezolid belongs to the Oxazolidinone Antibiotic class and Escitalopram belongs to the Selective Serotonin Reuptake Inhibitor (SSRI) class - two categories that can collide when co-prescribed. The mechanism described in FDA labeling is: Linezolid acts as a special type of medicine that stops the body from clearing serotonin, which can cause a dangerous reaction when mixed with escitalopram. 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. Linezolid has 29 total documented interactions on file in this dataset, and Escitalopram has 12. 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: This combination is not allowed and should be avoided to prevent serious health problems. 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 Linezolid or Escitalopram 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.