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Showing 1–24 of 289 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Antipsychotics Clear all
Recruiting Phase 4 Interventional

CLOZAPINE Response in Biotype-1

NCT04580134
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder, Bipolar 1 Disorder
Interventions
clozapine, risperidone
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 60 Years
Enrollment
524 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
5
States / cities
Hartford, Connecticut • Athens, Georgia • Chicago, Illinois + 2 more
Source: ClinicalTrials.gov public record
Updated May 10, 2026 · Synced Sep 8, 2026, 6:54 AM EDT
Completed Phase 4 Interventional Results available

A Double-blind, Placebo Controlled Trial of Risperidone for the Treatment of Anorexia Nervosa

NCT00140426
View directory record Official record
Conditions
Anorexia Nervosa
Interventions
Risperidone, Placebo
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
12 Years to 21 Years · Female only
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2009
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Feb 1, 2016 · Synced Sep 8, 2026, 6:54 AM EDT
Completed Phase 3 Interventional

A 26-Week Extension Study of EVP-6124 (Alpha-7 nAChR) as an Adjunctive Pro-Cognitive Treatment in Schizophrenia Subjects on Chronic Stable Atypical Antipsychotic Therapy

NCT01714713
View directory record Official record
Conditions
Schizophrenia, Impaired Cognition
Interventions
EVP-6124
Drug
Lead sponsor
FORUM Pharmaceuticals Inc
Industry
Eligibility
18 Years to 50 Years
Enrollment
830 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
69
States / cities
Little Rock, Arkansas • Anaheim, California • Bellflower, California + 66 more
Source: ClinicalTrials.gov public record
Updated May 2, 2016 · Synced Sep 8, 2026, 6:54 AM EDT
Completed Phase 3 Interventional Results available

Monotherapy Brexpiprazole (OPC-34712) Trial in the Treatment of Adults With Schizophrenia With Impulsivity

NCT02194933
View directory record Official record
Conditions
Schizophrenia With Impulsivity
Interventions
Brexpiprazole
Drug
Lead sponsor
Otsuka Pharmaceutical Development & Commercialization, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Orange, California
Source: ClinicalTrials.gov public record
Updated Nov 7, 2018 · Synced Sep 8, 2026, 6:54 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Family Perspectives:Treatment of Psychiatric Illnesses With Atypical Long Acting Injectable Antipsychotic Medication

NCT00287027
View directory record Official record
Conditions
Psychotic Disorders
Interventions
Risperdal Long Acting Injectable Antipsychotic Medication
Drug
Lead sponsor
National Alliance on Mental Illness New Hampshire
Other
Eligibility
18 Years to 65 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
1
States / cities
Concord, New Hampshire
Source: ClinicalTrials.gov public record
Updated Jan 4, 2007 · Synced Sep 8, 2026, 6:54 AM EDT
Completed Phase 1 Interventional

Study to Assess the Safety and Pharmacokinetics of ADASUVE® at Doses of 2.5, 5, or 10 mg in Children and Adolescents (10 Through 17 Years of Age) With Any Condition Warranting Chronic Use of an Antipsychotic Medication

NCT02184767
View directory record Official record
Conditions
BiPolar
Interventions
ADASUVE®
Drug
Lead sponsor
Teva Branded Pharmaceutical Products R&D, Inc.
Industry
Eligibility
10 Years to 17 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
2
States / cities
Atlanta, Georgia • Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Nov 11, 2021 · Synced Sep 8, 2026, 6:54 AM 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 25, 2024 · Synced Sep 8, 2026, 6:54 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Acute Impact of Intramuscular (IM) Aripiprazole and Olanzapine on Insulin Resistance in High Risk Prediabetics

NCT01411930
View directory record Official record
Conditions
Diabetes
Interventions
Intramuscular olanzapine, aripiprazole, Intramuscular aripiprazole, olanzapine
Drug
Lead sponsor
Veterans Medical Research Foundation
Other
Eligibility
40 Years to 65 Years · Male only
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Dec 19, 2012 · Synced Sep 8, 2026, 6:54 AM 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 9, 2018 · Synced Sep 8, 2026, 6:54 AM EDT
Completed Phase 2 Interventional

The MIND Study: Modifying the INcidence of Delirium

NCT00096863
View directory record Official record
Conditions
Delirium, Cognition Disorders
Interventions
Ziprasidone, Haloperidol, Placebo
Drug · Other
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years and older
Enrollment
102 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2007
U.S. locations
5
States / cities
Iowa City, Iowa • Chapel Hill, North Carolina • Greensboro, North Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Jan 28, 2016 · Synced Sep 8, 2026, 6:54 AM EDT
Completed Phase 4 Interventional Results available

Omega-3 Fatty Acids (Lovaza) for Second Generation Antipsychotic-Associated Hypertriglyceridemia

NCT00833976
View directory record Official record
Conditions
High Triglycerides, Hypercholesterolemia, Schizophrenia, Schizoaffective Disorder, Bipolar Disorder
Interventions
Lovaza
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 75 Years
Enrollment
65 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Sep 8, 2026, 6:54 AM EDT
Completed Phase 4 Interventional Results available

Metformin for Overweight & OBese ChILdren and Adolescents With BDS Treated With SGAs

NCT02515773
View directory record Official record
Conditions
Bipolar Disorder
Interventions
Metformin, healthy lifestyle intervention (LIFE)
Drug · Behavioral
Lead sponsor
Melissa Delbello
Other
Eligibility
8 Years to 19 Years
Enrollment
1,565 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2023
U.S. locations
29
States / cities
Covington, Kentucky • Neptune City, New Jersey • Amityville, New York + 13 more
Source: ClinicalTrials.gov public record
Updated Jan 13, 2025 · Synced Sep 8, 2026, 6:54 AM EDT
Terminated Phase 3 Interventional

Study to Evaluate the Efficacy, Safety, and Tolerability of Valbenazine as an Adjunctive Treatment for Schizophrenia

NCT05654870
View directory record Official record
Conditions
Schizophrenia
Interventions
Valbenazine, Placebo
Drug
Lead sponsor
Neurocrine Biosciences
Industry
Eligibility
13 Years and older
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
3
States / cities
San Jose, California • Coral Gables, Florida • Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Nov 11, 2024 · Synced Sep 8, 2026, 6:54 AM EDT
Terminated Phase 2 Interventional

A Study Of PF-03463275 As Add-On Therapy In Outpatients With Persistent Negative Symptoms Of Schizophrenia

NCT00977522
View directory record Official record
Conditions
Schizophrenia
Interventions
PF-03463275, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 55 Years
Enrollment
207 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
37
States / cities
Cerritos, California • Chula Vista, California • Escondido, California + 26 more
Source: ClinicalTrials.gov public record
Updated Feb 6, 2012 · Synced Sep 8, 2026, 6:54 AM EDT
Completed Phase 3 Interventional Results available

An Extension Study to a Clinical Study That Will Continue to Evaluate the Effectiveness and Safety of SEP-363856 in People With Schizophrenia That Switch to SEP-363856 From Their From Their Current Antipsychotic Medication

NCT05741528
View directory record Official record
Conditions
Schizophrenia
Interventions
SEP-363856
Drug
Lead sponsor
Otsuka Pharmaceutical Development & Commercialization, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
16
States / cities
Anaheim, California • Bellflower, California • Garden Grove, California + 12 more
Source: ClinicalTrials.gov public record
Updated Dec 10, 2025 · Synced Sep 8, 2026, 6:54 AM 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 23, 2025 · Synced Sep 8, 2026, 6:54 AM EDT
Completed Phase 4 Interventional

The Effects of Aripiprazole on Patients With Metabolic Syndrome

NCT00224822
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder, Bipolar Disorder, Metabolic Syndrome X
Interventions
Aripiprazole
Drug
Lead sponsor
New Mexico VA Healthcare System
Federal
Eligibility
18 Years to 65 Years
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2007
U.S. locations
1
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated Mar 23, 2010 · Synced Sep 8, 2026, 6:54 AM EDT
Completed Phase 3 Interventional Results available

The Modifying the Impact of ICU-Associated Neurological Dysfunction-USA (MIND-USA) Study

NCT01211522
View directory record Official record
Conditions
Delirium, Impaired Cognition, Long Term Psychologic Disorders
Interventions
Haloperidol, Ziprasidone, Placebo
Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
566 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2018
U.S. locations
16
States / cities
Denver, Colorado • New Haven, Connecticut • Indianapolis, Indiana + 12 more
Source: ClinicalTrials.gov public record
Updated Nov 17, 2019 · Synced Sep 8, 2026, 6:54 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Remediation of Schizophrenia Sensory Gating Deficit With Aripiprazole

NCT00567099
View directory record Official record
Conditions
Schizophrenia, Sensory Gating
Interventions
Aripiprzole
Drug
Lead sponsor
New Mexico VA Healthcare System
Federal
Eligibility
18 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2008
U.S. locations
1
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated May 24, 2010 · Synced Sep 8, 2026, 6:54 AM EDT
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
Eli Lilly and Company
Industry
Eligibility
18 Years to 65 Years
Enrollment
1,210 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 Jan 20, 2013 · Synced Sep 8, 2026, 6:54 AM 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 16, 2015 · Synced Sep 8, 2026, 6:54 AM EDT
Terminated Not applicable Interventional Results available

Oxytocin Add on Study for Stable Schizophrenic Patients

NCT00506909
View directory record Official record
Conditions
Schizophrenia
Interventions
Oxytocin, Placebo
Drug
Lead sponsor
David Feifel
Other
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2014
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Sep 24, 2019 · Synced Sep 8, 2026, 6:54 AM EDT
Completed No phase listed Observational

Relative Effectiveness of Schizophrenia Therapy Study

NCT01245348
View directory record Official record
Conditions
Schizophrenia, Bipolar Disorder
Interventions
SULT4A1-1 genetic test
Genetic
Lead sponsor
Medco Health Solutions, Inc.
Industry
Eligibility
18 Years and older
Enrollment
1,110 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Franklin Lakes, New Jersey
Source: ClinicalTrials.gov public record
Updated Feb 24, 2013 · Synced Sep 8, 2026, 6:54 AM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Pimavanserin vs. Quetiapine for Treatment of Parkinson's Psychosis

NCT04373317
View directory record Official record
Conditions
Parkinson's Disease Psychosis
Interventions
Pimavanserin, Quetiapine
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
40 Years and older
Enrollment
358 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2028
U.S. locations
24
States / cities
Tucson, Arizona • Loma Linda, California • Palo Alto, California + 20 more
Source: ClinicalTrials.gov public record
Updated Aug 18, 2026 · Synced Sep 8, 2026, 6:54 AM EDT