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ClinicalTrials.gov public records Last synced Oct 19, 2026, 10:52 AM EDT

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Showing 73–96 of 1,836 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Psychosis Clear all
Completed Phase 1 Interventional

Safety and PK Trial With Injectable ZX003 (Risperidone-SABER®) Compared to Risperdal® Consta® in Stable Schizophrenia

NCT02411526
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder
Interventions
ZX003 (Risperidone-SABER®), Risperdal Consta, Oral Risperidone
Drug
Lead sponsor
Zogenix, Inc.
Industry
Eligibility
18 Years to 60 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015
U.S. locations
1
States / cities
Long Beach, California
Source: ClinicalTrials.gov public record
Updated Oct 31, 2022 · Synced Oct 19, 2026, 10:52 AM EDT
Not listed Phase 1 Interventional

A Treatment Engagement Protocol for Psychiatrically Hospitalized Adolescents at Clinical High Risk for Psychosis

NCT04314635
View directory record Official record
Conditions
Psychosis Nos/Other
Interventions
Brief family engagement intervention for CHR, Treatment as usual (TAU)
Behavioral
Lead sponsor
Rhode Island Hospital
Other
Eligibility
13 Years to 18 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
East Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Oct 6, 2022 · Synced Oct 19, 2026, 10:52 AM EDT
Completed Not applicable Interventional Results available

First Episode Schizophrenia and Cannabis-Related Disorder Study

NCT00573287
View directory record Official record
Conditions
Cannabis-Related Disorder, Substance-Related Disorders, Schizophrenia, Psychotic Disorders
Interventions
clozapine, risperidone
Drug
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
17 Years to 45 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2011
U.S. locations
5
States / cities
Concord, New Hampshire • Lebanon, New Hampshire • Manchester, New Hampshire + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 23, 2019 · Synced Oct 19, 2026, 10:52 AM EDT
Completed Phase 1 Interventional

N-acetylcysteine (NAC) for Improving Cognitive Dysfunction in Schizophrenia

NCT01885338
View directory record Official record
Conditions
Schizophrenia
Interventions
N-acetylcysteine (NAC), Inactive placebo capsule
Drug
Lead sponsor
VA Greater Los Angeles Healthcare System
Federal
Eligibility
18 Years to 65 Years
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jun 4, 2015 · Synced Oct 19, 2026, 10:52 AM EDT
Completed Phase 3 Interventional Results available

An Extension of a Long-term Safety Study of ALKS 9072 (Also Known as ALKS 9070)

NCT01895452
View directory record Official record
Conditions
Schizophrenia
Interventions
ALKS 9072, Low Dose, ALKS 9072, High Dose
Drug
Lead sponsor
Alkermes, Inc.
Industry
Eligibility
18 Years to 70 Years
Enrollment
291 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
17
States / cities
Little Rock, Arkansas • Garden Grove, California • Oakland, California + 11 more
Source: ClinicalTrials.gov public record
Updated Aug 25, 2017 · Synced Oct 19, 2026, 10:52 AM EDT
Recruiting Phase 3 Interventional

Study to Evaluate Weight Gain as Assessed by Change in BMI Z-score in Pediatric Subjects With Schizophrenia or Bipolar I Disorder

NCT05303064
View directory record Official record
Conditions
Schizophrenia, Bipolar I Disorder
Interventions
OLZ/SAM, Olanzapine
Drug
Lead sponsor
Alkermes, Inc.
Industry
Eligibility
10 Years to 17 Years
Enrollment
220 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
26
States / cities
Dothan, Alabama • Little Rock, Arkansas • Encino, California + 23 more
Source: ClinicalTrials.gov public record
Updated Aug 14, 2026 · Synced Oct 19, 2026, 10:52 AM EDT
Completed Phase 4 Interventional Results available

Comparison of Antipsychotics for Metabolic Problems in Schizophrenia or Schizoaffective Disorder

NCT00423878
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder
Interventions
Risperidone, Olanzapine, Quetiapine, Aripiprazole
Drug
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
18 Years to 65 Years
Enrollment
215 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
28
States / cities
Colton, California • Palo Alto, California • New Haven, Connecticut + 25 more
Source: ClinicalTrials.gov public record
Updated Nov 2, 2016 · Synced Oct 19, 2026, 10:52 AM EDT
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 11, 2026 · Synced Oct 19, 2026, 10:52 AM EDT
Completed Phase 2 Interventional Results available

A Study to Evaluate the Effects of Basmisanil in Participants With Cognitive Impairment Associated With Schizophrenia (CIAS) Treated With Antipsychotics

NCT02953639
View directory record Official record
Conditions
Schizophrenia
Interventions
Basmisanil, Placebo
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years to 50 Years
Enrollment
214 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
37
States / cities
Little Rock, Arkansas • Rogers, Arkansas • Culver City, California + 32 more
Source: ClinicalTrials.gov public record
Updated Feb 9, 2021 · Synced Oct 19, 2026, 10:52 AM EDT
Completed Not applicable Interventional

A Comparative Study of New Medications for Psychosis in Adolescents

NCT00222495
View directory record Official record
Conditions
Psychotic Disorders, Schizophrenia, Schizophreniform Disorders, Schizoaffective Disorders
Interventions
quetiapine, olanzapine, risperidone
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
12 Years to 18 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2006
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 11, 2006 · Synced Oct 19, 2026, 10:52 AM EDT
Not yet recruiting Phase 4 Interventional Accepts healthy volunteers

Clinical Trial of an IL-23 Inhibitor for Immune Activation in Clinical Trial of an IL-23 Inhibitor for Immune Activation in People With Schizophrenia

NCT07615075
View directory record Official record
Conditions
Schizophrenia, Schizo Affective Disorder, Healthy
Interventions
Placebo, IL-23
Drug
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 64 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2030
U.S. locations
1
States / cities
Catonsville, Maryland
Source: ClinicalTrials.gov public record
Updated May 29, 2026 · Synced Oct 19, 2026, 10:52 AM EDT
Completed Phase 3 Interventional

Trial of Safety Nets In Hospitalized Patients

NCT00409370
View directory record Official record
Conditions
Delirium, Agitated Behavior, Alcohol Withdrawl, Acute Confusional State, Acute Psychosis
Interventions
SOMA safe enclosure
Device
Lead sponsor
Griffin Hospital
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2005
U.S. locations
1
States / cities
Derby, Connecticut
Source: ClinicalTrials.gov public record
Updated Dec 8, 2006 · Synced Oct 19, 2026, 10:52 AM EDT
Completed Not applicable Interventional Results available

D-cycloserine Augmentation of Cognitive Remediation in Schizophrenia

NCT00963924
View directory record Official record
Conditions
Schizophrenia
Interventions
D-cycloserine, Placebo, Cognitive Remediation
Drug · Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 6, 2018 · Synced Oct 19, 2026, 10:52 AM EDT
Terminated Phase 2 Interventional Results available

Trial to Investigate the Safety and Efficacy of GWP42003-P Versus Placebo as Adjunctive Therapy in Participants With Schizophrenia Experiencing Inadequate Response to Ongoing Antipsychotic Treatment

NCT04421456
View directory record Official record
Conditions
Schizophrenia
Interventions
GWP42003-P, Placebo
Drug
Lead sponsor
Jazz Pharmaceuticals
Industry
Eligibility
18 Years to 55 Years
Enrollment
95 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
19
States / cities
Bentonville, Arkansas • Little Rock, Arkansas • Garden Grove, California + 16 more
Source: ClinicalTrials.gov public record
Updated Jun 15, 2023 · Synced Oct 19, 2026, 10:52 AM EDT
Completed Phase 4 Interventional Results available

Varenicline for Cognitive Deficits and Cigarette Smoking in Schizophrenia - Efficacy and Predictors

NCT00802919
View directory record Official record
Conditions
Schizophrenia, Cigarette Smoking
Interventions
Varenicline, Placebo for varenicline
Drug
Lead sponsor
Nathan Kline Institute for Psychiatric Research
Other
Eligibility
18 Years to 65 Years
Enrollment
93 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2013
U.S. locations
2
States / cities
New York, New York • Orangeburg, New York
Source: ClinicalTrials.gov public record
Updated Dec 2, 2017 · Synced Oct 19, 2026, 10:52 AM EDT
Withdrawn Phase 1 Interventional

Study Evaluating The Effects Of Single Oral Doses Of NSA-789 On Auditory P50 Suppression In Schizophrenic Patients

NCT00781794
View directory record Official record
Conditions
Schizophrenia
Interventions
NSA-789 at 2 different doses
Drug
Lead sponsor
Wyeth is now a wholly owned subsidiary of Pfizer
Industry
Eligibility
18 Years to 55 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009
U.S. locations
1
States / cities
Glendale, California
Source: ClinicalTrials.gov public record
Updated Aug 20, 2021 · Synced Oct 19, 2026, 10:52 AM EDT
Completed Not applicable Interventional Results available

The Use of Skills Training to Augment Compensated Work Therapy (CWT)/VI for Veterans With SMI

NCT00272168
View directory record Official record
Conditions
Mental Illness, Schizophrenia
Interventions
Maryland Program for Vocational Effectiveness, Supportive Treatment for SMI
Behavioral · Other
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years to 65 Years
Enrollment
88 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 17, 2016 · Synced Oct 19, 2026, 10:52 AM EDT
Terminated Not applicable Interventional Results available

Treating Refractory Schizophrenia With rTMS

NCT02242578
View directory record Official record
Conditions
Schizophrenia
Interventions
1 Hz rTMS, 10 Hz rTMS
Device
Lead sponsor
Seton Healthcare Family
Other
Eligibility
18 Years to 80 Years
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2018
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Apr 12, 2021 · Synced Oct 19, 2026, 10:52 AM EDT
Completed Phase 4 Interventional Results available

Metformin for the Prevention of the Metabolic Side-effects of Zyprexa

NCT00682448
View directory record Official record
Conditions
Metabolic Complications
Interventions
Metformin, Placebo
Drug
Lead sponsor
Rush University Medical Center
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 2, 2021 · Synced Oct 19, 2026, 10:52 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Memantine Effects on Sensorimotor Gating and Neurocognition in Schizophrenia

NCT03860597
View directory record Official record
Conditions
Schizophrenia, Schizo Affective Disorder, Schizoaffective Disorder, Healthy
Interventions
Memantine, Placebos
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 50 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Dec 21, 2022 · Synced Oct 19, 2026, 10:52 AM EDT
Recruiting Phase 2 Interventional

GLP-1R Agonist Treatment for Opioid Use Disorder

NCT06548490
View directory record Official record
Conditions
Opioid Use Disorder, Opioid Abuse and Addiction, Narcotic-Related Disorders, Substance-Related Disorders, Chemically-Induced Disorders, Mental Disorder, Opioid
Interventions
Semaglutide Pen Injector, Placebo
Drug
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
18 Years to 75 Years
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
4
States / cities
Baltimore, Maryland • Fall River, Massachusetts • New York, New York + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 28, 2026 · Synced Oct 19, 2026, 10:52 AM EDT
Withdrawn Phase 4 Interventional Accepts healthy volunteers

Relationship Between Efficacy of Lumateperone and Brain Glutamate and Dopamine

NCT05890768
View directory record Official record
Conditions
Psychosis
Interventions
Lumateperone, Risperidone
Drug
Lead sponsor
University of New Mexico
Other
Eligibility
18 Years to 40 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated Mar 5, 2025 · Synced Oct 19, 2026, 10:52 AM EDT
Not yet recruiting Phase 4 Interventional

An Open-Label Study to Evaluate the Efficacy and Tolerability of Xanomeline/Trospium In First Episode/Early Phase Schizophrenia Patients

NCT06923891
View directory record Official record
Conditions
Schizophrenia
Interventions
Xanomeline/Trospium
Drug
Lead sponsor
Vanguard Research Group
Other
Eligibility
18 Years to 40 Years
Enrollment
172 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Richmond, Texas
Source: ClinicalTrials.gov public record
Updated Apr 11, 2025 · Synced Oct 19, 2026, 10:52 AM EDT
Completed Phase 2 Interventional Results available

A Study to Evaluate Multiple Oral Doses of Luvadaxistat in Adults With Schizophrenia

NCT03359785
View directory record Official record
Conditions
Schizophrenia
Interventions
Luvadaxistat, Matching Placebo
Drug
Lead sponsor
Neurocrine Biosciences
Industry
Eligibility
18 Years to 60 Years
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Gaithersburg, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 28, 2024 · Synced Oct 19, 2026, 10:52 AM EDT