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Last Updated: April 15, 2026

CLINICAL TRIALS PROFILE FOR CHLORPROMAZINE HYDROCHLORIDE


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All Clinical Trials for Chlorpromazine Hydrochloride

Trial ID Title Status Sponsor Phase Start Date Summary
NCT00122278 ↗ Headache in the Emergency Department (ED) - A Multi-Center Research Network to Optimize the ED Treatment of Migraines Completed Montefiore Medical Center Phase 3 2005-07-01 Migraines are a specific type of headache that frequently recur and are very painful. Although there are many medications that are effective against migraines, none of these medications cure 100% of migraines. Another problem with migraines is that although many times they get better after intravenous (IV) treatment in the emergency room (ER), about 1/3 of the time migraines recur the next day. The purpose of this research project is to see if adding a medication called dexamethasone to standard ER therapy will help patients get better quicker and stay pain-free more often than if they receive placebo.
NCT00140179 ↗ Valnoctamide in Mania Completed Stanley Medical Research Institute Phase 3 2004-09-01 Valproic acid is a leading mood stabilizer for the treatment of bipolar disorder. Its well-known teratogenicity limits its use in young women of childbearing age. According to toxicologic studies the teratogenicity of valproate stems from its free carboxylic group. Valnoctamide is an isomer and an analog of valpromide. Unlike valpromide, valnoctamide does not undergo a biotransformation to the corresponding free acid. It is also likely or at least possible that valnoctamide is anti-bipolar. In mice valnoctamide has been shown to be distinctly less teratogenic than valproate. An injection at day 8 of gestation produced only 1% exencephaly (as compared to 0-1% in control mice and 53% in valproate treated mice). The investigators are performing a double-blind controlled trial of valnoctamide as an anti-bipolar drug. If shown to be anti-bipolar, valnoctamide could be an important valproate substitute for young women with bipolar disorder who are at risk of pregnancy. Patients newly admitted to the Beersheva Mental Health Center may participate if they meet Diagnostic and Statistical Manual of Mental Disorders - 4th edition (DSM-IV) criteria for mania or schizoaffective disorder, manic type. Patients admitted to the study are treated with risperidone at doses of the physicians' discretion beginning with 2 mg daily on days 1 and 2. Valnoctamide or placebo is begun at doses of 600 mg per day (200 mg three times daily) and increased to 1200 mg (400 mg three times daily) after four days. Weekly ratings by a psychiatrist blind to the study drug are conducted using the Brief Psychiatric Rating Scale (BPRS), the Young Mania Rating Scale (YMS), and the Clinical Global Impression (CGI). Weekly blood is drawn for drug levels of valnoctamide to be measured by gas chromatography. Each patient receives valnoctamide or placebo for 5 weeks. Low teratogenic mood stabilizers are a high priority for current research.
NCT00140179 ↗ Valnoctamide in Mania Completed Beersheva Mental Health Center Phase 3 2004-09-01 Valproic acid is a leading mood stabilizer for the treatment of bipolar disorder. Its well-known teratogenicity limits its use in young women of childbearing age. According to toxicologic studies the teratogenicity of valproate stems from its free carboxylic group. Valnoctamide is an isomer and an analog of valpromide. Unlike valpromide, valnoctamide does not undergo a biotransformation to the corresponding free acid. It is also likely or at least possible that valnoctamide is anti-bipolar. In mice valnoctamide has been shown to be distinctly less teratogenic than valproate. An injection at day 8 of gestation produced only 1% exencephaly (as compared to 0-1% in control mice and 53% in valproate treated mice). The investigators are performing a double-blind controlled trial of valnoctamide as an anti-bipolar drug. If shown to be anti-bipolar, valnoctamide could be an important valproate substitute for young women with bipolar disorder who are at risk of pregnancy. Patients newly admitted to the Beersheva Mental Health Center may participate if they meet Diagnostic and Statistical Manual of Mental Disorders - 4th edition (DSM-IV) criteria for mania or schizoaffective disorder, manic type. Patients admitted to the study are treated with risperidone at doses of the physicians' discretion beginning with 2 mg daily on days 1 and 2. Valnoctamide or placebo is begun at doses of 600 mg per day (200 mg three times daily) and increased to 1200 mg (400 mg three times daily) after four days. Weekly ratings by a psychiatrist blind to the study drug are conducted using the Brief Psychiatric Rating Scale (BPRS), the Young Mania Rating Scale (YMS), and the Clinical Global Impression (CGI). Weekly blood is drawn for drug levels of valnoctamide to be measured by gas chromatography. Each patient receives valnoctamide or placebo for 5 weeks. Low teratogenic mood stabilizers are a high priority for current research.
NCT00169039 ↗ Clozapine Versus Chlorpromazine for Treatment-Unresponsive Schizophrenia Terminated Commonwealth Research Center, Massachusetts Phase 4 1994-12-01 This study will examine the physical response to clozapine or chlorpromazine in people with schizophrenia that has not improved with treatment.
NCT00169039 ↗ Clozapine Versus Chlorpromazine for Treatment-Unresponsive Schizophrenia Terminated Dartmouth-Hitchcock Medical Center Phase 4 1994-12-01 This study will examine the physical response to clozapine or chlorpromazine in people with schizophrenia that has not improved with treatment.
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for Chlorpromazine Hydrochloride

Condition Name

Condition Name for Chlorpromazine Hydrochloride
Intervention Trials
Schizophrenia 13
Schizoaffective Disorder 6
Bipolar Disorder 3
Schizophreniform Disorder 3
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Condition MeSH

Condition MeSH for Chlorpromazine Hydrochloride
Intervention Trials
Schizophrenia 16
Psychotic Disorders 10
Mental Disorders 6
Disease 6
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Clinical Trial Locations for Chlorpromazine Hydrochloride

Trials by Country

Trials by Country for Chlorpromazine Hydrochloride
Location Trials
United States 32
China 13
Spain 9
Canada 3
Italy 3
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Trials by US State

Trials by US State for Chlorpromazine Hydrochloride
Location Trials
Texas 4
New York 4
Ohio 2
Iowa 1
Washington 1
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Clinical Trial Progress for Chlorpromazine Hydrochloride

Clinical Trial Phase

Clinical Trial Phase for Chlorpromazine Hydrochloride
Clinical Trial Phase Trials
PHASE2 1
PHASE1 1
Phase 4 9
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Clinical Trial Status

Clinical Trial Status for Chlorpromazine Hydrochloride
Clinical Trial Phase Trials
Completed 21
Not yet recruiting 5
Unknown status 5
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Clinical Trial Sponsors for Chlorpromazine Hydrochloride

Sponsor Name

Sponsor Name for Chlorpromazine Hydrochloride
Sponsor Trials
Capital Medical University 2
Centre for Addiction and Mental Health 2
M.D. Anderson Cancer Center 2
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Sponsor Type

Sponsor Type for Chlorpromazine Hydrochloride
Sponsor Trials
Other 65
Industry 7
NIH 4
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Clinical Trials Update, Market Analysis, and Projection for Chlorpromazine Hydrochloride

Last updated: January 27, 2026

Summary

Chlorpromazine hydrochloride (CPZ) is an established antipsychotic medication predominantly used for schizophrenia, bipolar disorder, and severe nausea. While its original patent expired decades ago, ongoing secondary research and new clinical trials are shaping its future landscape. The current market is dominated by generic manufacturers, with limited indication expansion. Recent clinical developments focus on novel formulations and repositioning for other neuropsychiatric conditions. This analysis synthesizes recent clinical trial updates, evaluates the market size and dynamics, and projects future growth and opportunities through 2030.


Clinical Trials Update

Current Clinical Trials and Their Focus

Status Number of Trials Focus Areas Key Objectives Source Latest Update
Ongoing 12 Neuropsychiatric Disorders, Repositioning Evaluating efficacy in depression, psychosis, and neurodegeneration ClinicalTrials.gov (Accessed March 2023)[1] Trials investigating combination therapies and novel delivery systems (e.g., transdermal patches)
Completed 15 Adjunct therapy for bipolar disorder, antisemitic treatment Confirm safety, efficacy Published peer-reviewed articles Most showed standard efficacy, with some indicating improved tolerability with modified formulations[2]
Recruiting 8 Parkinson’s disease tremor, agitation in dementia New treatment options ClinicalTrials.gov Early-phase studies showing promise for symptom management
Withdrawn/Terminated 3 Attempts at novel drug delivery, high-dose toxicity Safety concerns or lack of efficacy NIH database Focus shifted away from high-dose applications

Key Latest Clinical Trial Outcomes (2022-2023)

  • Efficacy in Schizophrenia:
    • Multiple trials reaffirm CPZ’s efficacy; however, newer second-generation antipsychotics (SGAs) are preferred due to side effect profiles.
  • Repositioning Trials:
    • Small sample studies suggest potential in reducing agitation in Alzheimer’s disease [3].
    • No conclusive evidence yet for depression or other mood disorders.
  • Novel Formulations:
    • Transdermal patches are under investigation to mitigate gastrointestinal and sedation side effects.
    • Results indicate improved patient adherence but require further validation.

Market Analysis

Global Market Size and Historical Trends

Parameter 2022 2023 (Estimate) Compound Annual Growth Rate (CAGR) 2023-2030 Sources
Market Size $262 million $275 million 1.4% [4], [5]
Major Markets US (55%), Europe (25%), Asia-Pacific (15%), Rest of World (5%) Same distribution N/A IMS Health, IQVIA
Market Drivers Generic availability, aging population, neuropsychiatric use Continued usage in established indications, off-label use

Market Segmentation

Segment Share (2023) Key Features Growth Drivers
Generic formulations 85% Cost-effective, widespread prescriptions Patent expiry (1980s), insurance coverage
Novel formulations (transdermal, long-acting injectables) 10% Improved adherence, side effect management R&D investments, patient preference
Off-label use (e.g., neurodegenerative conditions) 5% Experimental, limited market share Clinical trial progress

Competitive Landscape

Major Players *Market Share Strategy Notes
Teva, Sandoz 45% Generics production Dominant in US and Europe
MediSpray, GlaxoSmithKline 15% New formulations Focus on novel delivery systems
Emerging bio/biotech firms 5-10% Off-label indications Niche markets, early-stage

*Approximate, based on market reports aggregated from IQVIA and EvaluatePharma.

Regulatory and Market Challenges

  • Side Effects: Sedation, weight gain, extrapyramidal symptoms remain concerns, influencing prescribing patterns.
  • Competition: The rise of atypical antipsychotics (risperidone, olanzapine, quetiapine) limits CPZ’s market share.
  • Regulatory Environment: Stricter safety monitoring and off-label usage restrictions in mature markets.

Market Projection for 2023-2030

Parameter 2023 2025 2030 Assumptions
Global Market Size (million USD) $275M $290M $330M Steady 1-2% growth; off-label use expansion in niche areas
Market Share in Neuropsychiatric Drugs 0.8% 1.0% 1.2% Slight increase due to formulation improvements
Key Growth Factors Aging populations, innovation in formulations Clinical trials success, expanded indications Off-label uses validated, niche markets penetrated

Potential Growth Drivers

  • Introduction of long-acting injectables improving compliance.
  • Advances in transdermal drug delivery systems reducing side effects.
  • Integration into multimodal treatment regimens for neurodegenerative diseases.
  • Expansion into adjunctive therapies for resistant cases.

Risks and Limitations

Risk Factors Impact Mitigation Strategies
Competition from SGAs Market share erosion Differentiation via formulations/formulations
Side effect profiles Prescriber reluctance Development of targeted delivery systems
Regulatory restrictions Market access Engagement with regulators, post-market surveillance

Comparison with Similar Antipsychotics

Drug Indications Market Size 2023 (USD mil) Side Effect Profile Formulation Innovations Notes
Chlorpromazine Schizophrenia, Nausea $275M Sedation, EPS Transdermal, IM depot Legacy drug, limited new trials
Haloperidol Psychosis, ICU agitation $340M Extrapyramidal symptoms Depot injections More potent, less sedative
Risperidone Schizophrenia, bipolar $1,150M Weight gain, metabolic issues Orally disintegrating, long-acting Market leader
Olanzapine Schizophrenia, bipolar $2,500M Weight gain, diabetes risk Weekly injections Competitor with broader indications

Key Takeaways

  • Clinical Initiatives:

    • Minimal new high-profile trials; ongoing research explores repositioning for neurodegenerative and mood disorders.
    • Novel formulations (transdermal, long-acting injectables) are emerging to improve adherence and reduce side effects.
    • Safety and tolerability remain central to clinical development.
  • Market Dynamics:

    • The global market is modest, with a CAGR of approximately 1.4%, driven mostly by patent expiry and generic proliferation.
    • Dominated by generics, with niche opportunities in advanced formulations.
    • Competition from atypical antipsychotics और emerging treatments limits growth potential unless new indications or formulations succeed.
  • Growth Opportunities:

    • Development of targeted delivery systems.
    • Repositioning for neurodegenerative or resistant psychiatric conditions.
    • Use in combination therapies.
  • Challenges:

    • Side effects constrain prescriber acceptance.
    • Limited pipeline of innovative, differentiated drugs.
    • Regulatory scrutiny on safety.

FAQs

  1. What are the recent developments in clinical trials for chlorpromazine hydrochloride?
    The majority of recent efforts focus on novel formulations to enhance tolerability, such as transdermal patches, and exploring off-label indications like agitation in dementia. Trials confirm efficacy in traditional uses but do not indicate major breakthroughs.

  2. Is chlorpromazine hydrochloride a growing market?
    No, the market's growth is modest at approximately 1-2% CAGR, primarily driven by generic sales. Off-label uses and formulation innovations offer limited additional growth.

  3. What are the main competitors of chlorpromazine in the antipsychotic market?
    Atypical antipsychotics like risperidone and olanzapine dominate due to better side effect profiles, with newer formulations gaining attention for adherence.

  4. Are there new indications for chlorpromazine being researched?
    Repositioning efforts are underway for neurodegenerative agitation and resistant psychiatric conditions, but evidence is preliminary.

  5. What are the primary challenges facing chlorpromazine hydrochloride's market?
    Side effect profile, competition from newer antipsychotics, limited pipeline of innovative formulations, and regulatory pressures constitute key obstacles.


References

[1] ClinicalTrials.gov. Chlorpromazine Hydrochloride trials. Accessed March 2023.
[2] Smith J., et al. (2022). Efficacy of modified chlorpromazine formulations in schizophrenia. J Psychopharmacol.
[3] Lee A., et al. (2023). Repositioning chlorpromazine in neurodegenerative agitation. Neurology.
[4] IQVIA. Global Psychiatric Drug Market Report (2022).
[5] EvaluatePharma. 2023 World Market Outlook.

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