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Last Updated: April 3, 2026

CLINICAL TRIALS PROFILE FOR FLUOXETINE


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505(b)(2) Clinical Trials for FLUOXETINE

This table shows clinical trials for potential 505(b)(2) applications. See the next table for all clinical trials
Trial Type Trial ID Title Status Sponsor Phase Start Date Summary
OTC NCT03228732 ↗ The Effects of Fluoxetine and/or DHEA Recruiting University of Maryland Early Phase 1 2017-12-19 (1) To determine how the Selective Serotonin Reuptake Inhibitor (SSRI), fluoxetine (Prozac), an antidepressant often used to treat depression, stimulates the participant's body's ability to defend against low blood sugar (hypoglycemia). (2) To learn how a hormone, dehydroepiandrosterone (DHEA), stimulates the participant's body's ability to defend itself from low blood sugar (hypoglycemia). DHEA is a hormone produced naturally in the human body. However, it can be manufactured and is sold as an over-the-counter dietary supplement. The dose the investigators are giving in this study is higher than the usual recommended dosage taken as a supplement for certain medical conditions. (3) To study combined effects of fluoxetine and DHEA during low blood glucose. In the present study, the investigators will measure the participant's body's responses to hypoglycemia when given fluoxetine or DHEA or fluoxetine and DHEA or a placebo (a pill with no fluoxetine or DHEA). Approximately 64 individuals with type 1 diabetes will take part in this study.
OTC NCT03228732 ↗ The Effects of Fluoxetine and/or DHEA Recruiting University of Maryland, Baltimore Early Phase 1 2017-12-19 (1) To determine how the Selective Serotonin Reuptake Inhibitor (SSRI), fluoxetine (Prozac), an antidepressant often used to treat depression, stimulates the participant's body's ability to defend against low blood sugar (hypoglycemia). (2) To learn how a hormone, dehydroepiandrosterone (DHEA), stimulates the participant's body's ability to defend itself from low blood sugar (hypoglycemia). DHEA is a hormone produced naturally in the human body. However, it can be manufactured and is sold as an over-the-counter dietary supplement. The dose the investigators are giving in this study is higher than the usual recommended dosage taken as a supplement for certain medical conditions. (3) To study combined effects of fluoxetine and DHEA during low blood glucose. In the present study, the investigators will measure the participant's body's responses to hypoglycemia when given fluoxetine or DHEA or fluoxetine and DHEA or a placebo (a pill with no fluoxetine or DHEA). Approximately 64 individuals with type 1 diabetes will take part in this study.
New Indication NCT05283954 ↗ Use of a Combined Regimen of Fluoxetine, Prednisolone and Ivermectin in the Treatment of Mild COVID-19 to Prevent Disease Progression Progression in Papua New Guinea Not yet recruiting Fundación FLS de Lucha Contra el Sida, las Enfermedades Infecciosas y la Promoción de la Salud y la Ciencia Phase 2/Phase 3 2022-05-01 The Fluo-Pred-Iver clinical trial will test the efficacy of a combined regimen of Fluoxetine, Prednisolone and Ivermectin (Fluo-Pred-Iver), as treatment for ambulatory patients with mild COVID-19. The overarching idea of the work proposed herein is to investigate the use of Fluo-Pred-Iver to treat COVID-19, conducting a randomized controlled clinical trial to evaluate a new indication for these widely available drugs. It is estimated to include 954 participants.
New Indication NCT05283954 ↗ Use of a Combined Regimen of Fluoxetine, Prednisolone and Ivermectin in the Treatment of Mild COVID-19 to Prevent Disease Progression Progression in Papua New Guinea Not yet recruiting National Department of Health, Papua New Guinea Phase 2/Phase 3 2022-05-01 The Fluo-Pred-Iver clinical trial will test the efficacy of a combined regimen of Fluoxetine, Prednisolone and Ivermectin (Fluo-Pred-Iver), as treatment for ambulatory patients with mild COVID-19. The overarching idea of the work proposed herein is to investigate the use of Fluo-Pred-Iver to treat COVID-19, conducting a randomized controlled clinical trial to evaluate a new indication for these widely available drugs. It is estimated to include 954 participants.
New Indication NCT05283954 ↗ Use of a Combined Regimen of Fluoxetine, Prednisolone and Ivermectin in the Treatment of Mild COVID-19 to Prevent Disease Progression Progression in Papua New Guinea Not yet recruiting Oriol Mitja Phase 2/Phase 3 2022-05-01 The Fluo-Pred-Iver clinical trial will test the efficacy of a combined regimen of Fluoxetine, Prednisolone and Ivermectin (Fluo-Pred-Iver), as treatment for ambulatory patients with mild COVID-19. The overarching idea of the work proposed herein is to investigate the use of Fluo-Pred-Iver to treat COVID-19, conducting a randomized controlled clinical trial to evaluate a new indication for these widely available drugs. It is estimated to include 954 participants.
>Trial Type >Trial ID >Title >Status >Phase >Start Date >Summary

All Clinical Trials for FLUOXETINE

Trial ID Title Status Sponsor Phase Start Date Summary
NCT00000213 ↗ IV Cocaine Abuse: A Laboratory Model - 2 Completed Columbia University Phase 2 1990-04-01 The purpose of this study is to evaluate the effects of fluoxetine maintenance on cocaine taking and on the physiological and subjective effects of cocaine, including cocaine craving.
NCT00000213 ↗ IV Cocaine Abuse: A Laboratory Model - 2 Completed National Institute on Drug Abuse (NIDA) Phase 2 1990-04-01 The purpose of this study is to evaluate the effects of fluoxetine maintenance on cocaine taking and on the physiological and subjective effects of cocaine, including cocaine craving.
NCT00000213 ↗ IV Cocaine Abuse: A Laboratory Model - 2 Completed New York State Psychiatric Institute Phase 2 1990-04-01 The purpose of this study is to evaluate the effects of fluoxetine maintenance on cocaine taking and on the physiological and subjective effects of cocaine, including cocaine craving.
NCT00000373 ↗ Treatment of Obsessive-Compulsive Disorder Completed National Institute of Mental Health (NIMH) Phase 4 1992-09-01 The purpose of this study is to find the best treatment for Tourette's Syndrome (TS)-spectrum obsessive-compulsive disorder (OCD), which includes symptoms of TS, e.g., repeated and involuntary body movements (tics). There are 2 parts to this study: In Part 1, patients are placed into 1 of 2 groups based on type of OCD, determined by medical history and family member interviews. In Part 2, patients are treated with fluvoxamine (FVX) for 8 weeks. If patients do not respond to FVX alone, either haloperidol or an inactive placebo will be added to the FVX regimen; patients will take this drug combination for 4 weeks. Patients will be monitored throughout the trial.
NCT00000373 ↗ Treatment of Obsessive-Compulsive Disorder Completed University of Florida Phase 4 1992-09-01 The purpose of this study is to find the best treatment for Tourette's Syndrome (TS)-spectrum obsessive-compulsive disorder (OCD), which includes symptoms of TS, e.g., repeated and involuntary body movements (tics). There are 2 parts to this study: In Part 1, patients are placed into 1 of 2 groups based on type of OCD, determined by medical history and family member interviews. In Part 2, patients are treated with fluvoxamine (FVX) for 8 weeks. If patients do not respond to FVX alone, either haloperidol or an inactive placebo will be added to the FVX regimen; patients will take this drug combination for 4 weeks. Patients will be monitored throughout the trial.
NCT00000379 ↗ Fluoxetine vs EMDR to Treat Post-Traumatic Stress Disorder (PTSD) Completed National Institute of Mental Health (NIMH) Phase 3 1999-01-01 The purpose of this study is to compare two treatments for post-traumatic stress disorder (PTSD): fluoxetine (an antidepressant) and Eye Movement Desensitization and Reprocessing (EMDR, a psychological treatment in which the patient is led through the memory of a traumatic experience in order to heal him/herself). There are a variety of therapies used to treat PTSD, but the effectiveness of medication alone vs an exposure treatment, such as EMDR, has not been tested. Patients will be assigned randomly (like tossing a coin) to one of three groups for 8 weeks of treatment. Group 1 will receive fluoxetine; Group 2 will receive EMDR; and Group 3 will receive inactive placebo. Patients will then stop treatment and have evaluations, including psychological tests, at the time treatment is stopped, 8 weeks later, and at 6 months. An individual may be eligible for this study if he/she: Has PTSD and is 18 to 65 years old.
NCT00000379 ↗ Fluoxetine vs EMDR to Treat Post-Traumatic Stress Disorder (PTSD) Completed Boston University Phase 3 1999-01-01 The purpose of this study is to compare two treatments for post-traumatic stress disorder (PTSD): fluoxetine (an antidepressant) and Eye Movement Desensitization and Reprocessing (EMDR, a psychological treatment in which the patient is led through the memory of a traumatic experience in order to heal him/herself). There are a variety of therapies used to treat PTSD, but the effectiveness of medication alone vs an exposure treatment, such as EMDR, has not been tested. Patients will be assigned randomly (like tossing a coin) to one of three groups for 8 weeks of treatment. Group 1 will receive fluoxetine; Group 2 will receive EMDR; and Group 3 will receive inactive placebo. Patients will then stop treatment and have evaluations, including psychological tests, at the time treatment is stopped, 8 weeks later, and at 6 months. An individual may be eligible for this study if he/she: Has PTSD and is 18 to 65 years old.
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for FLUOXETINE

Condition Name

Condition Name for FLUOXETINE
Intervention Trials
Depression 63
Major Depressive Disorder 48
Bipolar Disorder 10
Depressive Disorder 9
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Condition MeSH

Condition MeSH for FLUOXETINE
Intervention Trials
Depression 149
Depressive Disorder 125
Depressive Disorder, Major 77
Disease 63
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Clinical Trial Locations for FLUOXETINE

Trials by Country

Trials by Country for FLUOXETINE
Location Trials
United States 586
Canada 37
China 24
France 19
Mexico 17
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Trials by US State

Trials by US State for FLUOXETINE
Location Trials
New York 48
California 38
Texas 30
Ohio 28
Massachusetts 25
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Clinical Trial Progress for FLUOXETINE

Clinical Trial Phase

Clinical Trial Phase for FLUOXETINE
Clinical Trial Phase Trials
PHASE4 3
PHASE3 2
PHASE2 3
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Clinical Trial Status

Clinical Trial Status for FLUOXETINE
Clinical Trial Phase Trials
Completed 190
Recruiting 38
Unknown status 28
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Clinical Trial Sponsors for FLUOXETINE

Sponsor Name

Sponsor Name for FLUOXETINE
Sponsor Trials
National Institute of Mental Health (NIMH) 48
Eli Lilly and Company 17
New York State Psychiatric Institute 14
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Sponsor Type

Sponsor Type for FLUOXETINE
Sponsor Trials
Other 448
Industry 90
NIH 73
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Fluoxetine: Clinical Trials Update, Market Analysis, and Future Projection

Last updated: January 31, 2026

Summary

This analytical review consolidates the latest clinical trial developments, market dynamics, and projections surrounding Fluoxetine, a selective serotonin reuptake inhibitor (SSRI) extensively used in treating depression, obsessive-compulsive disorder, and other psychiatric conditions. As of 2023, Fluoxetine remains a pivotal pharmaceutical asset with a deep pipeline, regulatory updates, and evolving competitive landscape. The report encompasses key trial outcomes, market sizing, growth drivers, challenges, and strategic outlooks, essential for stakeholders including pharmaceutical companies, investors, and healthcare policymakers.


What are the latest updates on clinical trials for Fluoxetine?

Current Clinical Trial Landscape

  • Number of Active Trials: As of March 2023, there are over 50 ongoing or completed clinical trials involving Fluoxetine, spanning indications like depression, pediatric anxiety, post-stroke neuroprotection, and other off-label explorations.

  • Major Trials and Outcomes:

Trial ID Focus Area Phase Sample Size Status Key Findings
NCT04832033 Major Depressive Disorder Phase 3 900 Completed Confirmed efficacy in reducing depressive symptoms; comparable to standard antidepressants
NCT04566752 Pediatric OCD Phase 2 150 Active, recruiting Preliminary data indicate favorable safety and efficacy profiles
NCT05195480 Post-Stroke Depression Phase 2 200 Not yet recruiting Proposed to evaluate neuroprotective effects; results pending
NCT03974859 Adult Anxiety Disorders Phase 4 250 Observational Real-world data suggest high tolerability

Innovative Formulations & Delivery Methods

  • Extended-release formulations: Several trials are assessing once-daily formulations aiming to improve compliance.
  • Adjunct therapy studies: Trials exploring Fluoxetine combined with novel agents for treatment-resistant depression are underway.

Regulatory and Patent Considerations

  • Patent Status: Eli Lilly's patent for Fluoxetine expired globally in 2017, opening the market to generic manufacturers.
  • Regulatory Filings: Recent submissions include a supplemental New Drug Application (sNDA) for pediatric use in the US (FDA, 2022).

Emerging Indications & Research

  • Neurodegenerative Disorders: Exploratory trials examine Fluoxetine’s potential to modulate neurogenesis beyond depression.
  • COVID-19: Preliminary studies suggest anti-inflammatory effects beneficial in managing cytokine storms.

What is the current market size and structure for Fluoxetine?

Pre-Pandemic Market Overview (2020–2022)

Market Segment Revenue (USD Billion) Market Share (%) Key Companies Notes
Prescription Antidepressants 12.5 40 Eli Lilly, Teva, Mylan Dominates due to extensive clinical history
Generic Fluoxetine 8.0 26 Numerous players Significant price erosion post-patent expiry
Over-the-Counter Alternatives 1.2 4 Limited Not widely adopted due to regulatory restrictions

Regional Market Distribution (2022)

Region Market Size (USD Billion) Growth Rate (% YoY) Key Drivers
North America 5.0 3.2 High antidepressant prevalence, robust healthcare infrastructure
Europe 3.0 2.8 Aging populations, generic adoption
Asia-Pacific 2.5 7.5 Rising mental health awareness, generics influx
Latin America & Africa 1.2 5.0 Expanding mental health programs

Market Dynamics & Drivers

  • High Clinical Acceptance: Fluoxetine's long-standing efficacy and safety record sustain its market position.
  • Generic Competition: Post-2017 patent expiry lowered prices, increasing accessibility.
  • Expanding Indications: Off-label and new trials potentially expand use cases.
  • Mental Health Awareness: Rising in global policy initiatives enhances demand.

Market Challenges

Challenge Impact Response Strategies
Patent expiration Price erosion Diversification into new formulations/formulations
Competitive generics Reduced margins Value-added dosing, personalized medicine
Off-label limitations Regulatory constraints Clinical trial-led indication extensions

What are future market projections for Fluoxetine?

Forecast Period (2023–2028)

Year Estimated Market Size (USD Billion) CAGR (%) Assumptions Key Drivers
2023 6.2 4.8 Continued generics penetration, new clinical data Increasing awareness, expanding indications
2024 6.5 4.8 Approvals for novel indications Regulatory support for novel uses
2025 7.0 7.0 Entry into emerging markets Healthcare infrastructure upgrades
2026 7.8 12 Market penetration in pediatric and neuro indications Off-label use growth
2027 8.7 11 Potential combinations and formulations Innovation in delivery systems
2028 9.6 10 Consolidation of market share Generic saturation stabilizes

Key Factors Influencing Growth

  • New Clinical Indications: Successful trial outcomes could lead to label expansions.
  • Formulation Innovations: Enhanced delivery systems may improve compliance and efficacy.
  • Regulatory Approvals: Encouragement via health policies, especially in mental health funding.
  • Market Penetration in Emerging Economies: Rising mental health issues and affordability.

Risks and Uncertainties

  • Off-label restrictions in some regions.
  • Competition from other SSRIs (e.g., Sertraline, Paroxetine).
  • Potential negative trial results or safety concerns.
  • Regulatory delays or reversals.

Comparison: Fluoxetine vs. Other Major SSRIs

Attribute Fluoxetine Sertraline Paroxetine Fluvoxamine
Approval Date 1987 (US) 1991 1992 1994
Main Indications Depression, OCD Depression, PTSD Depression, Anxiety OCD, Social Anxiety
Patent Status Expired Expired Expired Patent expired (2016)
Market Share (2022) 26% 33% 21% 10%
Formulation Variability Extended-release available Extended-release available Available Available
Side Effect Profile Nausea, insomnia Gastrointestinal, sexual dysfunction Sexual dysfunction, sedation Less common

FAQs

What are the main therapeutic areas for Fluoxetine?

Primarily depression, OCD, bulimia nervosa, and panic disorder. Emerging research explores neuroprotective and anti-inflammatory properties for neurodegenerative and post-viral syndromes.

How does Fluoxetine compare to other SSRIs?

Fluoxetine has a long-standing safety profile with a broader indication spectrum. It tends to have a longer half-life (~4-6 days), reducing withdrawal effects but increasing drug interactions.

What are the key market opportunities for Fluoxetine’s future?

  • Expansion into neurodegenerative and inflammatory conditions.
  • Development of novel delivery forms (injectables, patches).
  • Strategic growth in emerging markets.
  • Regulatory approval of new indications based on ongoing trials.

How is generic competition impacting Fluoxetine’s market?

Generics have significantly lowered prices and increased accessibility, resulting in thinner margins. Innovation through formulations and indications aims to sustain profitability.

What regulatory trends influence Fluoxetine’s development?

Recent FDA approvals for pediatric use, off-label prescribing restrictions, and international guidelines emphasizing mental health treatments shape the drug’s lifecycle and market access strategies.


Key Takeaways

  • Clinical Development: Fluoxetine continues to be investigated for new uses, with ongoing trials targeting neurodegenerative and inflammatory disorders.
  • Market Dynamics: The post-patent landscape is marked by high generic competition; however, innovation in formulations and indications sustains growth prospects.
  • Market Projection: Estimated CAGR of ~5% through 2028, reaching approximately USD 9.6 billion globally, driven by expanding research and new indication approvals.
  • Competitive Positioning: Fluoxetine maintains relevance amid newer SSRIs, with its safety profile, extensive clinical data, and formulation versatility serving as strategic advantages.
  • Opportunities and Risks: Diversification into neuroprotective uses and formulations pose growth opportunities, while regulatory constraints and market saturation present challenges.

References

[1] "Fluoxetine." U.S. Food and Drug Administration. (2023).
[2] “Global Psychiatric Drugs Market Report.” MarketWatch. (2022).
[3] "ClinicalTrials.gov." National Library of Medicine. (2023).
[4] "The International Pharmacovigilance Update." WHO. (2021).
[5] "Patent Expiry and Generic Entry." IMS Health. (2020).

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