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Showing 1–24 of 74 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Olanzapine, risperidone Clear all
Completed Phase 4 Interventional Results available

Reducing Weight Gain and Improving Metabolic Function in Children Being Treated With Antipsychotics

NCT00806234
View directory record Official record
Conditions
Psychotic Disorders
Interventions
Aripiprazole or Perphenazine, Metformin, Olanzapine, quetiapine, risperidone, ziprasidone, aripiprazole, asenapine, iloperidone, lurasidone, paliperidone, or olanzapine/fluoxetine
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
8 Years to 19 Years
Enrollment
127 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2014
U.S. locations
4
States / cities
Baltimore, Maryland • Glen Oaks, New York • Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 24, 2017 · Synced Sep 26, 2026, 7:15 AM EDT
Completed Phase 4 Interventional

Risperidone Versus Olanzapine for Mania in Preschool Children 4 to 6 Years of Age With Bipolar Disorder

NCT00181935
View directory record Official record
Conditions
Bipolar Disorder, Mania
Interventions
risperidone (Risperdal), olanzapine (Zyprexa)
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
4 Years to 6 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2004
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 5, 2013 · Synced Sep 26, 2026, 7:15 AM 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 28, 2015 · Synced Sep 26, 2026, 7:15 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 13, 2015 · Synced Sep 26, 2026, 7:15 AM EDT
Completed Not applicable Interventional Results available

Neurocognitive Effects of Ziprasidone: Relationship to Working Memory and Dopamine Blockade

NCT00225498
View directory record Official record
Conditions
Schizophrenia
Interventions
ziprasidone vs risperidone or olanzapine
Drug
Lead sponsor
Northwell Health
Other
Eligibility
18 Years to 50 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2008
U.S. locations
1
States / cities
Glen Oaks, New York
Source: ClinicalTrials.gov public record
Updated Sep 9, 2015 · Synced Sep 26, 2026, 7:15 AM EDT
Completed Phase 4 Interventional

Antipsychotic Response in Schizophrenia

NCT00018668
View directory record Official record
Conditions
Schizophrenia
Interventions
Risperidone, Olanzapine, Quetiapine
Drug
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
21 Years to 70 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2004
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jan 20, 2009 · Synced Sep 26, 2026, 7:15 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 26, 2026, 7:15 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 26, 2026, 7:15 AM 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 23, 2015 · Synced Sep 26, 2026, 7:15 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Glucose Regulation During Risperidone and Olanzapine Treatment

NCT00006195
View directory record Official record
Conditions
Schizophrenia
Interventions
risperidone, olanzapine
Drug
Lead sponsor
National Center for Research Resources (NCRR)
NIH
Eligibility
18 Years to 60 Years
Healthy volunteers
Accepts healthy volunteers
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 11, 2006 · Synced Sep 26, 2026, 7:15 AM EDT
Withdrawn Phase 2 Interventional

Anti-psychotic Medication (Stable Dose) Weight Loss Study

NCT01272765
View directory record Official record
Conditions
Obesity
Interventions
Placebo, IHBG-10
Other · Dietary Supplement
Lead sponsor
Avera McKennan Hospital & University Health Center
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
Sioux Falls, South Dakota
Source: ClinicalTrials.gov public record
Updated May 31, 2012 · Synced Sep 26, 2026, 7:15 AM 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 24, 2026 · Synced Sep 26, 2026, 7:15 AM 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 20, 2008 · Synced Sep 26, 2026, 7:15 AM EDT
Completed Phase 4 Interventional

Treatment for First-Episode Schizophrenia

NCT00000374
View directory record Official record
Conditions
Schizophrenia
Interventions
Olanzapine, Risperidone
Drug
Lead sponsor
Northwell Health
Other
Eligibility
16 Years to 40 Years
Enrollment
125 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1998 – 2007
U.S. locations
2
States / cities
Glen Oaks, New York • The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Jan 12, 2012 · Synced Sep 26, 2026, 7:15 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study to Compare Disease Progression and Modification Following Treatment With Paliperidone Palmitate Long-Acting Injection or Oral Antipsychotics in Participant's With Recent-onset Schizophrenia or Schizophreniform

NCT02431702
View directory record Official record
Conditions
Schizophrenia, Psychotic Disorders
Interventions
Aripiprazole, Haloperidol, Olanzapine, Oral Paliperidone ER, Perphenazine, Quetiapine, Oral Risperidone, Paliperidone Palmitate Injection (PP1M), Paliperidone Palmitate Injection (PP3M)
Drug
Lead sponsor
Janssen Scientific Affairs, LLC
Industry
Eligibility
18 Years to 35 Years
Enrollment
337 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2019
U.S. locations
34
States / cities
Little Rock, Arkansas • Garden Grove, California • Lemon Grove, California + 31 more
Source: ClinicalTrials.gov public record
Updated Apr 28, 2025 · Synced Sep 26, 2026, 7:15 AM EDT
Completed Phase 4 Interventional

Treatment of Geriatric Bipolar Mood Disorders: A Pilot Study

NCT00177567
View directory record Official record
Conditions
Bipolar Disorder
Interventions
lithium carbonate, Depakote-ER, risperidone, olanzapine, paroxetine, bupropion, lamotrigine, venlafaxine, tranylcypromine, mirtazapine
Drug
Lead sponsor
University of Pittsburgh
Other
Eligibility
60 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2004
U.S. locations
2
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 14, 2005 · Synced Sep 26, 2026, 7:15 AM EDT
Completed Not applicable Interventional Results available

Glucose and Lipid Metabolism on Antipsychotic Medication

NCT00515723
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder, Type 2 Diabetes Mellitus, Hyperglycemia
Interventions
risperidone, olanzapine, quetiapine, ziprasidone
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 60 Years
Enrollment
96 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2008
U.S. locations
2
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 1, 2019 · Synced Sep 26, 2026, 7:15 AM EDT
Completed Phase 2 Interventional Results available

A Study Evaluating the Safety, Efficacy, and Pharmacokinetics of Miricorilant in Obese Adult Patients With Schizophrenia While Taking Antipsychotic Medications (GRATITUDE II)

NCT04524403
View directory record Official record
Conditions
Antipsychotic-induced Weight Gain (AIWG)
Interventions
Miricorlilant, Placebo
Drug
Lead sponsor
Corcept Therapeutics
Industry
Eligibility
18 Years to 65 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
40
States / cities
Bentonville, Arkansas • Little Rock, Arkansas • Culver City, California + 33 more
Source: ClinicalTrials.gov public record
Updated Jun 12, 2024 · Synced Sep 26, 2026, 7:15 AM EDT
Completed Phase 4 Interventional

Comparative Effects of Chronic Treatment With Olanzapine and Risperidone on Glucose and Lipid Metabolism

NCT00287820
View directory record Official record
Conditions
Schizophrenia, Diabetes, Metabolic Syndrome, Hyperglycemia
Interventions
olanzapine, risperidone
Drug
Lead sponsor
Nathan Kline Institute for Psychiatric Research
Other
Eligibility
18 Years to 65 Years
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2007
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 24, 2011 · Synced Sep 26, 2026, 7:15 AM EDT
Completed Phase 2Phase 3 Interventional

Trial of Ampakine Added to Clozapine, Olanzapine or Risperidone in Patients With Schizophrenia

NCT00235352
View directory record Official record
Conditions
Schizophrenia
Interventions
CX516 (Ampakine)
Drug
Lead sponsor
North Suffolk Mental Health Association
Other
Eligibility
18 Years to 65 Years
Enrollment
105 participants
Timeline
2002 – 2007
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 25, 2009 · Synced Sep 26, 2026, 7:15 AM EDT
Completed Phase 2 Interventional

Depakote ER Plus an Atypical Antipsychotic Vs. an Atypical Antipsychotic Alone in the Treatment of Schizophrenia

NCT00073164
View directory record Official record
Conditions
Schizophrenia
Interventions
Divalproex Sodium Extended-Release Tablets, Olanzapine, Risperidone
Drug
Lead sponsor
Abbott
Industry
Eligibility
18 Years to 65 Years
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2003
U.S. locations
35
States / cities
Birmingham, Alabama • Tuscaloosa, Alabama • Anaheim, California + 32 more
Source: ClinicalTrials.gov public record
Updated Aug 3, 2006 · Synced Sep 26, 2026, 7:15 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 26, 2026, 7:15 AM EDT
Completed Phase 4 Interventional Results available

Switching to Iloperidone From Other Antipsychotics in Schizophrenia

NCT01207414
View directory record Official record
Conditions
Schizophrenia
Interventions
iloperidone
Drug
Lead sponsor
Novartis
Industry
Eligibility
18 Years to 64 Years
Enrollment
501 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
59
States / cities
Birmingham, Alabama • Cerritos, California • Costa Mesa, California + 46 more
Source: ClinicalTrials.gov public record
Updated Mar 14, 2013 · Synced Sep 26, 2026, 7:15 AM EDT
Completed Phase 2 Interventional Results available

A Study to Assess the Safety, Efficacy, and Pharmacokinetics of Miricorilant (CORT118335) in Obese Adults With Schizophrenia or Bipolar Disorder Treated With Antipsychotic Medications

NCT03818256
View directory record Official record
Conditions
Antipsychotic-induced Weight Gain (AIWG)
Interventions
Miricorilant, Placebo
Drug
Lead sponsor
Corcept Therapeutics
Industry
Eligibility
18 Years to 65 Years
Enrollment
71 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
27
States / cities
Bentonville, Arkansas • Little Rock, Arkansas • Culver City, California + 23 more
Source: ClinicalTrials.gov public record
Updated Sep 18, 2024 · Synced Sep 26, 2026, 7:15 AM EDT