Escitalopram Outperforms Fluoxetine in Long-Term Depression Study
A meta-analysis of 115 studies found three antidepressants sustained symptom improvement better than fluoxetine over time.
Updated on Nov. 11, 2026 in Mental Health
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A meta-analysis published in The Lancet Psychiatry compared 21 antidepressant drugs against fluoxetine, also known as Prozac, across 115 studies. Most drugs were comparable in effectiveness and discontinuation over the study period.
Why it matters
Most antidepressant trials last around eight weeks, and little prior research compared drugs beyond that window. The findings add evidence on how sustained response differs across commonly prescribed treatments for major depressive disorder.
The analysis pooled 115 studies covering 21 antidepressants, with follow-up exceeding 12 weeks and one study running up to two years, compared against fluoxetine as the benchmark. Effect sizes and confidence intervals for the sustained-response differences are not included in the extracted data.
The players
The Lancet Psychiatry
A peer-reviewed medical journal published by Elsevier that focuses on research in psychiatry and mental health.
The details
Researchers pooled published and unpublished studies of participants with major depressive disorder and measured whether participants sustained a response and whether they stopped taking the drug. Participants who discontinued a drug for any reason were counted as not improved.
Timeline
Most antidepressant trials have typically lasted around eight weeks.
The meta-analysis was published in The Lancet Psychiatry on November 10, 2026.
Health Landscape
The analysis extends evidence beyond the eight-week clinical trial window that has defined most antidepressant efficacy research. Comparing long-term sustained response across 21 drugs against fluoxetine reshapes how clinicians and researchers weigh options for major depressive disorder.
Readers managing depression may find that long-term symptom control differs across medications, which is a question to raise with a prescriber. Any change in treatment should be discussed with a qualified clinician rather than made independently.
The takeaway
Long-term response, not just short-term improvement, can differ meaningfully between antidepressants. Discussing sustained outcomes with a clinician may help inform treatment decisions.
Further reading
Explore more on Mental Health research and treatment options.
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