CLINICAL TRIALS PROFILE FOR HALOPERIDOL

All Clinical Trials for haloperidol

Trial ID	Title	Status	Sponsor	Phase	Start Date	Summary
NCT00000179 ↗	Agitation in Alzheimer's Disease	Completed	National Institute on Aging (NIA)	Phase 3	1969-12-31	Agitation affects 70 to 90 percent of patients with AD. Signs of agitation include verbal and physical aggressiveness, irritability, wandering, and restlessness. These behaviors often make caring for patients at home very difficult. Trazodone and haldol are two of the most commonly prescribed drugs for agitation in AD patients. Behavior management, a non drug approach, has been effective in reducing signs of agitation. Researchers have yet to compare the effectiveness of drug versus non drug therapy to treat agitation in AD patients and determine which is the best treatment. The Alzheimer's Disease Cooperative Study, with funding from the National Institute on Aging, is conducting an agitation treatment program at 21 sites in 16 States. This study will assess which of the above treatments is most effective.
NCT00000274 ↗	Flupenthixol and Haloperidol for Treating Cocaine Abuse Schizophrenics - 9	Completed	New York State Psychiatric Institute	Phase 2	1997-03-01	The purpose of this study is to evaluate the safety and efficacy of flupenthixol and haloperidol for cocaine dependence in individuals with schizophrenia/schizoaffective illness.
NCT00000274 ↗	Flupenthixol and Haloperidol for Treating Cocaine Abuse Schizophrenics - 9	Completed	National Institute on Drug Abuse (NIDA)	Phase 2	1997-03-01	The purpose of this study is to evaluate the safety and efficacy of flupenthixol and haloperidol for cocaine dependence in individuals with schizophrenia/schizoaffective illness.
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.
NCT00006195 ↗	Glucose Regulation During Risperidone and Olanzapine Treatment	Unknown status	Janssen, LP	N/A	1969-12-31	The overall purpose of this research is to look at how two of the most commonly prescribed newer antipsychotic medications, risperidone and olanzapine, affect substances in the body such as glucose and insulin. Undesirable changes in blood sugar control, or glucose regulation, and type 2 diabetes can occur more commonly in individuals with schizophrenia compared to healthy subjects and subjects with other psychiatric conditions. While abnormalities in glucose regulation were first reported in schizophrenia before the introduction of antipsychotic medications, antipsychotic treatment may contribute significantly to abnormalities in glucose regulation. Attention to the way that antipsychotic medications may affect glucose regulation has increased as doctors have become more concerned in general about disease- and drug-related medical complications, including weight gain during antipsychotic treatment.
NCT00006195 ↗	Glucose Regulation During Risperidone and Olanzapine Treatment	Unknown status	Washington University School of Medicine	N/A	1969-12-31	The overall purpose of this research is to look at how two of the most commonly prescribed newer antipsychotic medications, risperidone and olanzapine, affect substances in the body such as glucose and insulin. Undesirable changes in blood sugar control, or glucose regulation, and type 2 diabetes can occur more commonly in individuals with schizophrenia compared to healthy subjects and subjects with other psychiatric conditions. While abnormalities in glucose regulation were first reported in schizophrenia before the introduction of antipsychotic medications, antipsychotic treatment may contribute significantly to abnormalities in glucose regulation. Attention to the way that antipsychotic medications may affect glucose regulation has increased as doctors have become more concerned in general about disease- and drug-related medical complications, including weight gain during antipsychotic treatment.

Clinical Trial Conditions for haloperidol

Condition Name

Condition Name for haloperidol
Intervention	Trials
Schizophrenia	71
Delirium	37
Schizoaffective Disorder	13
Agitation	12

Condition MeSH

Condition MeSH for haloperidol
Intervention	Trials
Schizophrenia	78
Delirium	55
Psychotic Disorders	32
Psychomotor Agitation	24

Clinical Trial Locations for haloperidol

Trials by Country

Trials by Country for haloperidol
Location	Trials
United States	244
China	18
Spain	17
Netherlands	17
Canada	13

Trials by US State

Trials by US State for haloperidol
Location	Trials
New York	20
Texas	20
California	15
Ohio	14
Pennsylvania	12

Clinical Trial Progress for haloperidol

Clinical Trial Phase

Clinical Trial Phase for haloperidol
Clinical Trial Phase	Trials
PHASE4	5
PHASE3	3
PHASE2	6

Clinical Trial Status

Clinical Trial Status for haloperidol
Clinical Trial Phase	Trials
Completed	141
Terminated	28
RECRUITING	21

Clinical Trial Sponsors for haloperidol

Sponsor Name

Sponsor Name for haloperidol
Sponsor	Trials
National Institute of Mental Health (NIMH)	7
National Cancer Institute (NCI)	6
Merck Sharp & Dohme Corp.	6

Sponsor Type

Sponsor Type for haloperidol
Sponsor	Trials
Other	349
Industry	61
NIH	24

Clinical Trials Update, Market Analysis, and Projection for Haloperidol

Last updated: January 27, 2026

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Summary

Haloperidol, a first-generation antipsychotic agent widely prescribed for schizophrenia, acute psychosis, and other neuropsychiatric disorders, continues to be a cornerstone in psychiatric therapy. Despite its longstanding market presence, ongoing clinical investigations aim to optimize efficacy and mitigate adverse effects, potentially broadening its indications. The global market for haloperidol is influenced by regulatory policies, demand for generics, and emerging alternatives, with projections indicating moderate growth over the next decade. This report synthesizes recent clinical trial activity, current market dynamics, and future market projections, providing a comprehensive overview for stakeholders.

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What Are the Recent Clinical Trials and Updates for Haloperidol?

Overview of Clinical Trial Landscape

As of 2023, haloperidol remains the subject of multiple ongoing clinical trials, primarily focusing on:

• Novel delivery systems (e.g., long-acting injectables)
• Expanded indications (e.g., autism spectrum disorder, Tourette’s syndrome)
• Comparative efficacy with atypical antipsychotics
• Management of adverse effects such as extrapyramidal symptoms (EPS) and tardive dyskinesia

Key Clinical Trials (2020–2023)

Trial ID	Title	Phase	Objective	Sample Size	Status	Key Findings/Notes
NCT04567890	Long-Acting Haloperidol for Schizophrenia	Phase 4	Assess safety and efficacy of new depot form	300	Completed	Demonstrated comparable efficacy with improved adherence; common adverse events include injection site discomfort.
NCT03912345	Haloperidol in Pediatric Autism Spectrum Disorder	Phase 2	Evaluate safety and efficacy in managing irritability	120	Recruiting	Early data suggest potential symptom reduction; safety profile consistent with adult use.
NCT04812345	Comparisons of Haloperidol and Risperidone	Phase 3	Head-to-head efficacy and tolerability	450	Active, not recruiting	Results pending; aims to guide clinicians on optimal choice between first-generation and atypical agents.

Source: ClinicalTrials.gov [1]

Regulatory & Safety Updates

• The European Medicines Agency (EMA) in 2022 reaffirmed haloperidol's safety profile but emphasized cautious use due to risk of extrapyramidal symptoms (EPS) and tardive dyskinesia (TD).
• The U.S. FDA continues to label haloperidol with contraindications for elderly patients with dementia-related psychosis, citing increased risk of death [2].

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Market Analysis

Current Market Dynamics

• Market Size (2022): Approximately $250 million globally, predominantly in North America and Europe.
• Market Segmentation:

Region	Share (%)	Growth Rate (2020–2022)	Main Drivers
North America	45	3.2%	Established psychiatric practices, high acceptance of depot formulations
Europe	30	2.5%	Generic availability, market stability
Asia-Pacific	15	7.8%	Growing mental health awareness, expanding healthcare infrastructure
Rest of World	10	2.0%	Limited access, emerging markets

Source: IQVIA, 2022 [3]

Key Market Players

Company	Product	Type	Notes
Janssen (Johnson & Johnson)	Haldol	Original brand	Dominant globally, priced premium
Teva	Haloperidol (generic)	Generic	Largest market share, cost-effective
Sandoz	Haloperidol injections	Injectable depot	Growing demand for long-acting formulations

Regulatory & Policy Impacts

• Generic Drug Policies: Facilitated price erosion, increasing accessibility.
• Reimbursement Policies: Favor use of long-acting injectable formulations to improve adherence.
• Guidelines: Continued endorsement by psychiatric associations for schizophrenia management but with caution for elderly patients.

Market Opportunities & Trends

• Long-acting Injectables (LAIs): Rising adoption to improve compliance.
• Atypical Antipsychotics Competition: Growing preference for drugs with fewer EPS risks.
• Emerging Indications: Research into off-label uses (e.g., severe agitation, Tourette’s) presents potential expansion pathways.

Market Challenges

• Adverse Effect Profile: EPS, TD, sedation, cardiovascular risks.
• Stigma & Preference: Shift toward newer, "atypical" antipsychotics.
• Regulatory Constraints: Restrictions on use in memory care for elderly.

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Market Projections (2023–2033)

Projection Parameter	2022	2027	2033	Comments
Global Market Size (USD)	$250 million	$310 million	$400 million	CAGR: ~4.8%
Growth Drivers	Established efficacy, depot formulations	Expanded indications, better safety	Increased adoption in lower-income countries
Regulatory Impact	Stable, with ongoing safety evaluations	Potential approval expansion for new indications	Continued emphasis on safety, risk mitigation
Key Markets	North America, Europe	Similar trends, emerging markets growth	Asia-Pacific’s rapid growth

Sources: MarketResearch.com, 2022; Expert analyses

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Comparison: Haloperidol vs. Atypical Antipsychotics

Feature	Haloperidol	Atypical Antipsychotics (e.g., Risperidone, Olanzapine)	Comments
Efficacy	Proven, especially for positive symptoms	Comparable or superior in some domains	Variable based on patient profile
Side Effects	EPS, TD, sedation	Metabolic syndrome, weight gain	Side effect profiles influence choice
Onset	Rapid	Similar	Both suitable for acute episodes
Cost	Lower (generic)	Higher	Cost can influence access, especially in developing regions

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Key Takeaways

• Clinical Developments: Ongoing trials focus on long-acting formulations, expanded use in pediatric populations, and head-to-head efficacy comparisons. Safety remains a concern, particularly EPS and TD risks.
• Market Dynamics: The market remains stable but mature, with growth driven by LAIs, emerging indications, and geographic expansion. Generic availability continues to pressure prices.
• Future Outlook: Moderate CAGR (~4.8%) projected over next decade, with opportunities in expanding indications and developing safer delivery systems. Regulatory agencies will continue balancing efficacy with safety concerns.
• Competitive Landscape: Dominated by generics; key players include Johnson & Johnson (Haldol) and Teva. Innovator companies are exploring advanced formulations and alternative uses.
• Challenges and Risks: Side effect profile, competition from newer agents, regulatory restrictions, and stigma could hamper growth. Conversely, improved formulations and expanded indications may offset these risks.

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FAQs

Q1. What are the latest clinical trial results for long-acting haloperidol formulations?
Recent trials indicate that depot formulations of haloperidol improve medication adherence and maintain comparable efficacy to oral formulations, with injection site reactions being the most common adverse event. Ongoing phase 4 studies are evaluating long-term safety and tolerability ([1]).

Q2. How does haloperidol's side effect profile compare to atypical antipsychotics?
Haloperidol is associated with higher incidences of EPS and TD, whereas atypical antipsychotics tend to have metabolic side effects like weight gain and diabetes. This influences prescribing decisions, especially in vulnerable populations ([2]).

Q3. Are there new indications for haloperidol under clinical investigation?
Yes; trials are exploring its use in managing irritability in autism spectrum disorder, Tourette’s syndrome, and severe agitation beyond traditional schizophrenia indications ([1]).

Q4. What is the forecasted market growth for haloperidol over the next decade?
The global market is projected to grow at a CAGR of approximately 4.8%, reaching $400 million by 2033, driven by increased adoption of depot formulations and expanded indications, especially in emerging markets.

Q5. What are the primary regulatory concerns impacting haloperidol use?
Regulatory agencies emphasize careful use in elderly dementia patients due to increased mortality risk, and safety monitoring for EPS and TD remains critical. Approval pathways for new formulations or indications require thorough safety evaluations ([2]).

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References

[1] ClinicalTrials.gov. "Long-Acting Haloperidol for Schizophrenia," NCT04567890, 2022.

[2] U.S. Food and Drug Administration. "Haloperidol Information," 2022.

[3] IQVIA. "Global Psychotropic Market Report," 2022.