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ClinicalTrials.gov public records Last synced Oct 1, 2026, 10:35 PM EDT

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Showing 1–24 of 52 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: risperidone, quetiapine Clear all
Terminated Phase 2Phase 3 Interventional

A Long-Term, Open-Label, Study on Schizophrenia

NCT01129674
View directory record Official record
Conditions
Schizophrenia
Interventions
LY2140023, Olanzapine, Aripiprazole, Risperidone, Quetiapine
Drug
Lead sponsor
Denovo Biopharma LLC
Industry
Eligibility
18 Years to 65 Years
Enrollment
560 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
42
States / cities
Little Rock, Arkansas • Escondido, California • Garden Grove, California + 39 more
Source: ClinicalTrials.gov public record
Updated Sep 14, 2026 · Synced Oct 1, 2026, 10:35 PM EDT
Completed Phase 1 Interventional

Movement Disorders Caused by Antipsychotic Drugs in Older Patients

NCT00255879
View directory record Official record
Conditions
Dyskinesia, Drug-Induced
Interventions
Quetiapine, Risperidone, Olanzapine
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
40 Years and older
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1999 – 2004
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jun 6, 2013 · Synced Oct 1, 2026, 10:35 PM EDT
Completed Phase 1 Interventional

A Clinical Study That Will Assess How Food Moves Through the Stomach and Effects Blood Glucose Levels in Subjects With Schizophrenia Taking SEP-363856 or and Prior Antipsychotic (PA) Standard

NCT05402111
View directory record Official record
Conditions
Schizophrenia
Interventions
SEP-363856, Prior antipsychotic (risperidone, olanzapine, quetiapine or aripiprazole)
Drug
Lead sponsor
Otsuka Pharmaceutical Development & Commercialization, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
7
States / cities
Little Rock, Arkansas • Rogers, Arkansas • Long Beach, California + 4 more
Source: ClinicalTrials.gov public record
Updated Jun 26, 2024 · Synced Oct 1, 2026, 10:35 PM EDT
Completed Phase 3 Interventional

Switch Study of Existing Atypical Antipsychotics to Bifeprunox

NCT00347425
View directory record Official record
Conditions
Schizophrenia and Schizoaffective Disorder
Interventions
Aripiprazole, Olanzapine, Risperidone, Quetiapine, Ziprasidone
Drug
Lead sponsor
Solvay Pharmaceuticals
Industry
Eligibility
18 Years to 65 Years
Enrollment
286 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
63
States / cities
Birmingham, Alabama • Little Rock, Arkansas • Anaheim, California + 54 more
Source: ClinicalTrials.gov public record
Updated May 21, 2008 · Synced Oct 1, 2026, 10:35 PM EDT
Completed Phase 4 Interventional Results available

Preventing Relapse in Schizophrenia: Oral Antipsychotics Compared To Injectables: Evaluating Efficacy

NCT00330863
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder
Interventions
Risperidone microspheres, Risperidone, Olanzapine, Quetiapine, Ziprasidone, Aripiprazole, Paliperidone
Drug
Lead sponsor
Northwell Health
Other
Eligibility
18 Years to 65 Years
Enrollment
357 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2011
U.S. locations
8
States / cities
Los Angeles, California • Augusta, Georgia • Iowa City, Iowa + 5 more
Source: ClinicalTrials.gov public record
Updated Jul 10, 2018 · Synced Oct 1, 2026, 10:35 PM EDT
Withdrawn Phase 2 Interventional

Anti-psychotic Medication (New Use) Weight Loss Study

NCT01272752
View directory record Official record
Conditions
Obesity
Interventions
IHBG-10, Placebo
Dietary Supplement
Lead sponsor
Avera McKennan Hospital & University Health Center
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013
U.S. locations
1
States / cities
Sioux Falls, South Dakota
Source: ClinicalTrials.gov public record
Updated Jun 1, 2012 · Synced Oct 1, 2026, 10:35 PM EDT
Completed Phase 4 Interventional

Efficacy and Safety of Two Atypical Antipsychotics vs. Placebo in Patients With an Acute Exacerbation of Either Schizophrenia or Schizoaffective Disorder

NCT00061802
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder
Interventions
risperidone, quetiapine
Drug
Lead sponsor
Johnson & Johnson Pharmaceutical Research & Development, L.L.C.
Industry
Eligibility
18 Years to 65 Years
Enrollment
225 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2004
U.S. locations
7
States / cities
San Diego, California • Hoffman Est, Illinois • Lake Charles, Louisiana + 4 more
Source: ClinicalTrials.gov public record
Updated Feb 7, 2012 · Synced Oct 1, 2026, 10:35 PM EDT
Completed No phase listed Observational

A Study to Assess Stroke Risk Among Users of Typical Versus Atypical Antipsychotics Stratified by Broad Age Group

NCT04002700
View directory record Official record
Conditions
Stroke
Interventions
Haloperidol, Typical Antipsychotics, Atypical Antipsychotics
Drug
Lead sponsor
Janssen Research & Development, LLC
Industry
Eligibility
18 Years and older
Enrollment
1,234,412 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
1
States / cities
Titusville, New Jersey
Source: ClinicalTrials.gov public record
Updated Jun 25, 2025 · Synced Oct 1, 2026, 10:35 PM EDT
Terminated Phase 4 Interventional Results available

1/2-MC4R Genotype and Pediatric Antipsychotic Drug- Induced Weight Gain

NCT01844700
View directory record Official record
Conditions
High Risk MC4R Genotype, Low Risk MC4R Genotype, One Week or Less Antipsychotic Lifetime Exposure
Interventions
Ziprasidone, aripiprazole, quetiapine, or risperidone
Drug
Lead sponsor
Northwell Health
Other
Eligibility
13 Years to 18 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Glen Oaks, New York
Source: ClinicalTrials.gov public record
Updated Feb 5, 2016 · Synced Oct 1, 2026, 10:35 PM EDT
Not yet recruiting Not applicable Interventional

Evaluating the Impact of Ketogenic Therapy on Symptom Severity and Metabolic Side Effect Profile Among Individuals Living With Bipolar Disorder in A Rural Southern Catchment Area

NCT07570875
View directory record Official record
Conditions
Bipolar Disorder
Interventions
Ketogenic foodstuffs, Standard of Care Oral antipsychotics, Standard of care long acting injectable medication for bipolar disorder
Dietary Supplement · Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Montgomery, Alabama
Source: ClinicalTrials.gov public record
Updated Sep 21, 2026 · Synced Oct 1, 2026, 10:35 PM EDT
Recruiting No phase listed Observational

Maternal And Infant Antipsychotic Study

NCT06049953
View directory record Official record
Conditions
Antipsychotics, Pregnancy
Interventions
Antipsychotics, Non-antipsychotic medication, No Medication
Drug · Other
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older · Female only
Enrollment
74 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 22, 2026 · Synced Oct 1, 2026, 10:35 PM EDT
Completed Phase 1 Interventional

Reducing Antipsychotic-Induced Weight Gain in Children With Metformin

NCT01231074
View directory record Official record
Conditions
Obesity, Weight Gain, Psychotropic Induced Weight Gain
Interventions
Metformin
Drug
Lead sponsor
Nationwide Children's Hospital
Other
Eligibility
10 Years to 17 Years
Enrollment
96 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 2, 2019 · Synced Oct 1, 2026, 10:35 PM EDT
Completed Phase 2 Interventional Results available

A Study to Assess the Safety and Efficacy of ASP4345 as Add-on Treatment for Cognitive Impairment in Subjects With Schizophrenia on Stable Doses of Antipsychotic Medication

NCT03557931
View directory record Official record
Conditions
Schizophrenia
Interventions
ASP4345, placebo, risperidone, quetiapine, olanzapine, ziprasidone, aripiprazole, brexpiprazole, paliperidone, lurasidone
Drug
Lead sponsor
Astellas Pharma Global Development, Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
233 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
27
States / cities
Cerritos, California • Garden Grove, California • Lemon Grove, California + 19 more
Source: ClinicalTrials.gov public record
Updated Nov 12, 2024 · Synced Oct 1, 2026, 10:35 PM EDT
Terminated No phase listed Observational

Longitudinal Comparative Effectiveness of Bipolar Disorder Therapies

NCT02893371
View directory record Official record
Conditions
Bipolar Disorder
Interventions
Lithium Carbonate, Lamotrigine, Valproic Acid, Oxcarbazepine, Carbamazepine, Ziprasidone, Risperidone, Quetiapine, Olanzapine, Aripiprazole, Fluoxetine / Olanzapine, Haloperidol, Perphenazine, Clozapine, Asenapine, Lurasidone, Paliperidone, Mirtazapine, Bupropion, Desvenlafaxine, Duloxetine, Venlafaxine, Citalopram, Escitalopram, Fluoxetine, Fluvoxamine, Paroxetine, Sertraline, Vilazodone, Doxepin
Drug
Lead sponsor
University of New Mexico
Other
Eligibility
Not listed
Enrollment
1,037,352 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated Mar 12, 2024 · Synced Oct 1, 2026, 10:35 PM EDT
Completed Phase 4 Interventional

Aripiprazole Used as Dual Therapy in the Treatement of Patients With Chronic Stable Schizophrenia or Schizoaffective Disorder.

NCT00325689
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder
Interventions
Quetiapine or Risperidone + Aripiprazole, Quetiapine or Risperidone + placebo
Drug
Lead sponsor
Otsuka Pharmaceutical Development & Commercialization, Inc.
Industry
Eligibility
18 Years and older
Enrollment
323 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
48
States / cities
Little Rock, Arkansas • Cerritos, California • Costa Mesa, California + 37 more
Source: ClinicalTrials.gov public record
Updated Nov 8, 2013 · Synced Oct 1, 2026, 10:35 PM EDT
Terminated Phase 4 Interventional

An Exploratory Analysis of Immune and Inflammatory Response Associated With Clozapine

NCT05741502
View directory record Official record
Conditions
Treatment-resistant Schizophrenia
Interventions
Clozapine, Antipsychotics,Other (non-Clozapine)
Drug
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 65 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 25, 2026 · Synced Oct 1, 2026, 10:35 PM EDT
Completed Phase 4 Interventional

A Comparison of Two Standard Therapies in the Management of Dementia With Agitation

NCT00208819
View directory record Official record
Conditions
Senile Dementia, Alzheimer Type, Dementia, Alzheimer Type, Alzheimer Disease, Dementia
Interventions
risperidone, quetiapine, olanzapine, divalproex
Drug
Lead sponsor
Emory University
Other
Eligibility
65 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2007
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Nov 13, 2013 · Synced Oct 1, 2026, 10:35 PM EDT
Completed Phase 4 Interventional Results available

A Study of the Cataractogenic Potential of Seroquel and Risperdal in the Treatment of Participants With Schizophrenia or Schizoaffective Disorder

NCT00206102
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder
Interventions
quetiapine fumarate, risperidone
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 65 Years
Enrollment
1,098 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2008
U.S. locations
63
States / cities
Little Rock, Arkansas • Mabelvale, Arkansas • Morrilton, Arkansas + 60 more
Source: ClinicalTrials.gov public record
Updated Jan 14, 2013 · Synced Oct 1, 2026, 10:35 PM EDT
Completed Phase 1 Interventional

Parallel Group, Multiple Dose Pharmacokinetics Study of Five Antipsychotic Medications in Psychiatric Participants

NCT02087579
View directory record Official record
Conditions
Psychotic Disorders, Schizophrenia, Bipolar Disorder, Depressive Disorder
Interventions
Aripiprazole, oral formulation, Olanzapine, oral formulation, Paliperidone, oral formulation, Paliperidone, LAI, Quetiapine, oral formulation, Risperidone, oral formulation, Risperidone, LAI
Drug
Lead sponsor
Janssen Research & Development, LLC
Industry
Eligibility
18 Years to 70 Years
Enrollment
305 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014
U.S. locations
6
States / cities
Garden Grove, California • Kissimmee, Florida • Atlanta, Georgia + 3 more
Source: ClinicalTrials.gov public record
Updated Oct 29, 2015 · Synced Oct 1, 2026, 10:35 PM EDT
Completed Not applicable Interventional

CATIE-Alzheimer's Disease Trial

NCT00015548
View directory record Official record
Conditions
Alzheimer's Disease
Interventions
Olanzapine, Quetiapine, Risperidone, Citalopram
Drug
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
Not listed
Enrollment
450 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2004
U.S. locations
34
States / cities
Tuscaloosa, Alabama • Irvine, California • Los Angeles, California + 29 more
Source: ClinicalTrials.gov public record
Updated Jun 17, 2015 · Synced Oct 1, 2026, 10:35 PM EDT
Recruiting Phase 3 Interventional

Lumateperone for the Improvement of Apathy in Patients With Psychotic Symptoms.

NCT06482554
View directory record Official record
Conditions
Apathy, Schizophrenia, Schizophrenia; Psychosis
Interventions
Lumateperone 42 mg, Risperidone 2 mg
Drug
Lead sponsor
Louisiana State University Health Sciences Center Shreveport
Other
Eligibility
18 Years to 65 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Shreveport, Louisiana
Source: ClinicalTrials.gov public record
Updated Jul 1, 2024 · Synced Oct 1, 2026, 10:35 PM EDT
Not listed No phase listed Observational

DNA Diagnostics for Minimizing Metabolic Side-Effects of Antipsychotics

NCT00752960
View directory record Official record
Conditions
Psychoses
Interventions
Not listed
Lead sponsor
Genomas, Inc
Industry
Eligibility
18 Years to 59 Years
Enrollment
1,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
2
States / cities
Hartford, Connecticut • Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Sep 16, 2008 · Synced Oct 1, 2026, 10:35 PM EDT
Completed Phase 4 Interventional Results available

15 Month Study for Adults Who Have Been Diagnosed With Schizophrenia and Incarcerated

NCT01157351
View directory record Official record
Conditions
Schizophrenia
Interventions
paliperidone, risperidone, haloperidole, perphenazine, aripiprazole, quetiapine, paliperidone palmitate, olanzapine
Drug
Lead sponsor
Janssen Scientific Affairs, LLC
Industry
Eligibility
18 Years to 65 Years
Enrollment
450 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
55
States / cities
Bullhead City, Arizona • Tuscon, Arizona • Little Rock, Arkansas + 52 more
Source: ClinicalTrials.gov public record
Updated Apr 24, 2015 · Synced Oct 1, 2026, 10:35 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

National Pregnancy Registry for Psychiatric Medications

NCT01246765
View directory record Official record
Conditions
Pregnant Women, Psychotropic Drugs
Interventions
Not listed
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
5,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2033
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 24, 2025 · Synced Oct 1, 2026, 10:35 PM EDT