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ClinicalTrials.gov public records Last synced Oct 17, 2026, 6:30 AM EDT

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Showing 97–120 of 203 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: quetiapine Clear all
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Clinical Study to Investigate the Effect of the Combination of Psychotropic Drugs and an Opioid on Ventilation

NCT04310579
View directory record Official record
Conditions
Hypercapnia, Ventilatory Depression
Interventions
Oxycodone and Midazolam, Oxycodone, Paroxetine, and Quetiapine
Drug
Lead sponsor
Food and Drug Administration (FDA)
Federal
Eligibility
18 Years to 50 Years
Enrollment
55 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
West Bend, Wisconsin
Source: ClinicalTrials.gov public record
Updated May 21, 2024 · Synced Oct 17, 2026, 6:30 AM EDT
Completed Phase 3 Interventional

Efficacy and Safety of Seroquel Plus Mood Stabilizer in the Maintenance of Bipolar I Disorder

NCT00081380
View directory record Official record
Conditions
Bipolar Disorder
Interventions
Seroquel®, quetiapine fumarate (atypical antipsychotic), lithium (mood stabilizer), divalproex (mood stabilizer)
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years and older
Enrollment
710 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
81
States / cities
Birmingham, Alabama • Scottsdale, Arizona • Little Rock, Arkansas + 78 more
Source: ClinicalTrials.gov public record
Updated Dec 22, 2008 · Synced Oct 17, 2026, 6:30 AM EDT
Completed Phase 3 Interventional

Immediate Release (IR) to Sustained Release (SR) Switching Study: Study of Switching From IR Seroquel to SR Seroquel in Outpatients With Schizophrenia

NCT00206128
View directory record Official record
Conditions
Schizophrenia
Interventions
Seroquel SR
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 65 Years
Enrollment
454 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
18
States / cities
Birmingham, Alabama • Anaheim, California • Cerritos, California + 15 more
Source: ClinicalTrials.gov public record
Updated Jan 4, 2013 · Synced Oct 17, 2026, 6:30 AM EDT
Completed Phase 3 Interventional

Seroquel in Bipolar Depression Versus SSRI

NCT00119652
View directory record Official record
Conditions
Bipolar Disorder, Bipolar Depression, Depression
Interventions
quetiapine fumarate (Seroquel), paroxetine, mood stabilizing activity
Drug · Behavioral
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 65 Years
Enrollment
676 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
28
States / cities
Phoenix, Arizona • Little Rock, Arkansas • National City, California + 25 more
Source: ClinicalTrials.gov public record
Updated Jan 4, 2013 · Synced Oct 17, 2026, 6:30 AM EDT
Completed Phase 4 Interventional

CATIE- Schizophrenia Trial

NCT00014001
View directory record Official record
Conditions
Schizophrenia
Interventions
perphenazine, olanzapine, quetiapine, risperidone, ziprasidone, clozapine, fluphenazine decanoate
Drug
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
18 Years to 65 Years
Enrollment
1,600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2004
U.S. locations
54
States / cities
Chula Vista, California • Los Angeles, California • Orange, California + 45 more
Source: ClinicalTrials.gov public record
Updated Jun 17, 2015 · Synced Oct 17, 2026, 6:30 AM EDT
Terminated Phase 3 Interventional Results available

Quetiapine Extended Release (XR) Treatment of Major Depressive Disorder With Comorbid Generalized Anxiety Disorder

NCT00868374
View directory record Official record
Conditions
Major Depressive Disorder, Generalized Anxiety Disorder
Interventions
Quetiapine XR, Placebo
Drug
Lead sponsor
Keming Gao
Other
Eligibility
18 Years to 70 Years
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 29, 2016 · Synced Oct 17, 2026, 6:30 AM EDT
Completed Phase 4 Interventional

Improving Substance Use and Clinical Outcomes in Heavy Cannabis Users With Quetiapine

NCT01153490
View directory record Official record
Conditions
Cannabis Dependence
Interventions
Behavioral Intervention
Behavioral
Lead sponsor
Northwell Health
Other
Eligibility
18 Years to 65 Years
Enrollment
124 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
2
States / cities
Glen Oaks, New York • Manhasset, New York
Source: ClinicalTrials.gov public record
Updated Apr 17, 2018 · Synced Oct 17, 2026, 6:30 AM 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 17, 2026, 6:30 AM EDT
Completed Phase 3 Interventional

Quetiapine Fumarate Bipolar Maintenance Monotherapy

NCT00314184
View directory record Official record
Conditions
Bipolar Disorder
Interventions
quetiapine fumarate
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years and older
Enrollment
1,255 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
30
States / cities
Cerritos, California • San Diego, California • Santa Ana, California + 27 more
Source: ClinicalTrials.gov public record
Updated Dec 22, 2008 · Synced Oct 17, 2026, 6:30 AM EDT
Not listed Not applicable Interventional

Quetiapine Decreases Smoking in Patients With Chronic Schizophrenia

NCT00231101
View directory record Official record
Conditions
Smoking Behavior in Schizophrenia
Interventions
Quetiapine
Drug
Lead sponsor
Arthur P. Noyes Research Foundation
Other
Eligibility
18 Years to 65 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
1
States / cities
Norristown, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 17, 2006 · Synced Oct 17, 2026, 6:30 AM EDT
Withdrawn Phase 2Phase 3 Interventional

Quetiapine Treatment for Pediatric Delirium

NCT03572257
View directory record Official record
Conditions
Delirium
Interventions
Quetiapine, Placebo
Drug · Other
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
Up to 21 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Apr 8, 2020 · Synced Oct 17, 2026, 6:30 AM EDT
Completed Phase 1 Interventional

A Clinical Study That Will Assess the Effect of SEP-363856 or Prior Antipsychotic (PA) Standard of Care on Body-weight Associated Parameters in Subjects With Schizophrenia

NCT05542264
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
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
4
States / cities
Little Rock, Arkansas • Rogers, Arkansas • Dayton, Ohio + 1 more
Source: ClinicalTrials.gov public record
Updated Jun 26, 2024 · Synced Oct 17, 2026, 6:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Crossover Bioequivalence Study of Quetiapine Fumarate 25 mg Tablets Under Fasted Conditions

NCT01570907
View directory record Official record
Conditions
Treatment for Bipolar I Disorder
Interventions
Quetiapine Fumarate
Drug
Lead sponsor
Roxane Laboratories
Industry
Eligibility
18 Years to 45 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 23, 2018 · Synced Oct 17, 2026, 6:30 AM EDT
Completed Phase 2Phase 3 Interventional Results available

Psychotherapy for Bipolar II Depression, Pilot Study, Phase II

NCT00411463
View directory record Official record
Conditions
Bipolar II Disorder
Interventions
Interpersonal and Social Rhythm Therapy (IPSRT-BPII), Seroquel
Behavioral · Drug
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years to 65 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2010
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 30, 2017 · Synced Oct 17, 2026, 6:30 AM EDT
Terminated Phase 4 Interventional Results available

Gao Bipolar Spectrum Lithium/Quetiapine Study

NCT01526148
View directory record Official record
Conditions
Bipolar Disorder
Interventions
Lithium, Quetiapine
Drug
Lead sponsor
University Hospitals Cleveland Medical Center
Other
Eligibility
18 Years and older
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 16, 2017 · Synced Oct 17, 2026, 6:30 AM EDT
Completed Phase 3 Interventional Results available

Lurasidone HCL - A 6-week Phase 3 Study of Patients With Acute Schizophrenia.

NCT00790192
View directory record Official record
Conditions
Schizophrenia
Interventions
Lurasidone, Quetiapine XR, Placebo
Drug
Lead sponsor
Sumitomo Pharma America, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
488 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
29
States / cities
Little Rock, Arkansas • Cerritos, California • Costa Mesa, California + 23 more
Source: ClinicalTrials.gov public record
Updated Mar 17, 2016 · Synced Oct 17, 2026, 6:30 AM EDT
Terminated Phase 2 Interventional Results available

Study to Evaluate Safety and Daytime Sedation in Subjects With Parkinson's Disease With Neuropsychiatric Symptoms Treated With Pimavanserin or Low-Dose Quetiapine

NCT04164758
View directory record Official record
Conditions
Parkinson's Disease
Interventions
Pimavanserin, Placebo, Quetiapine
Drug · Other
Lead sponsor
ACADIA Pharmaceuticals Inc.
Industry
Eligibility
50 Years to 85 Years
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
16
States / cities
Scottsdale, Arizona • Tucson, Arizona • Sacramento, California + 13 more
Source: ClinicalTrials.gov public record
Updated Oct 14, 2021 · Synced Oct 17, 2026, 6:30 AM EDT
Completed Phase 3 Interventional

Safety & Efficacy Study of Quetiapine Fumarate (SEROQUEL®) vs. Placebo and Active Control in Major Depressive Disorder

NCT00321490
View directory record Official record
Conditions
Major Depressive Disorder
Interventions
Quetiapine fumarate, Duloxetine
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 65 Years
Enrollment
600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
34
States / cities
Birmingham, Alabama • Scottsdale, Arizona • Beverly Hills, California + 31 more
Source: ClinicalTrials.gov public record
Updated Mar 25, 2009 · Synced Oct 17, 2026, 6:30 AM EDT
Completed No phase listed Observational

Adherence in Patients Admitted to a Psychiatric Unit for Acute Psychosis: an Analysis of Serum Levels of Antipsychotics.

NCT01786369
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder, Bipolar Disorder
Interventions
Not listed
Lead sponsor
Northwell Health
Other
Eligibility
18 Years and older
Enrollment
106 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Glen Oaks, New York
Source: ClinicalTrials.gov public record
Updated Apr 14, 2015 · Synced Oct 17, 2026, 6:30 AM EDT
Completed Phase 3 Interventional Results available

Treatment of Mania Symptoms With Drug Therapy

NCT00183443
View directory record Official record
Conditions
Bipolar Disorder, Schizophrenia
Interventions
Divalproex-extended release (DVP-ER), Lithium, Quetiapine
Drug
Lead sponsor
Palo Alto Veterans Institute for Research
Other
Eligibility
18 Years to 65 Years
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2010
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Jul 17, 2018 · Synced Oct 17, 2026, 6:30 AM EDT
Terminated Phase 4 Interventional Results available

Seroquel Alone Versus Seroquel With an SSRI for Depression With Psychotic Symptoms

NCT00955474
View directory record Official record
Conditions
Major Depressive Disorder With Psychotic Features
Interventions
Quetiapine, escitalopram, Sertraline, Citalopram
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 85 Years
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2013
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 20, 2017 · Synced Oct 17, 2026, 6:30 AM EDT
Terminated Phase 3 Interventional

Treatment of Depression With Quetiapine

NCT00174603
View directory record Official record
Conditions
Major Depression With Psychotic Features
Interventions
quetiapine
Drug
Lead sponsor
Rush University Medical Center
Other
Eligibility
18 Years to 75 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jan 10, 2008 · Synced Oct 17, 2026, 6:30 AM EDT
Not listed Phase 4 Interventional

Treatment Study Comparing Aripiprazole Once Monthly With Standard of Care Medication in Outpatients With Schizophrenia

NCT02282085
View directory record Official record
Conditions
Schizophrenia
Interventions
Aripiprazole Once-Monthly, Oral Antipsychotic (i.e. aripiprazole, risperidone, lurasidone, quetiapine, olanzapine, ziprasidone, etc)
Drug
Lead sponsor
Matt Byerly
Other
Eligibility
18 Years to 60 Years
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2014
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jun 8, 2015 · Synced Oct 17, 2026, 6:30 AM 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 17, 2026, 6:30 AM EDT