Independent directory Public ClinicalTrials.gov records United States
Clear filters
ClinicalTrials.gov public records Last synced Sep 2, 2026, 10:02 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–12 of 12 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
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
Conditions
Schizophrenia
Interventions
Olanzapine, Perphenazine, Aripiprazole, Metformin, Simvastatin, Benztropine
Drug
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
18 Years to 40 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
13
States / cities
Colton, California • Palo Alto, California • New Haven, Connecticut + 10 more
Conditions
HIV Infections, Peripheral Nervous System Disease
Interventions
Mexiletine hydrochloride, Benztropine mesylate, Amitriptyline hydrochloride
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 1997
U.S. locations
36
States / cities
Birmingham, Alabama • Los Angeles, California • San Diego, California + 23 more
Conditions
Neuropathic Pain, Pain, Spinal Cord Injuries
Interventions
Venalafaxine hydrochloride
Drug
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
18 Years to 70 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2008
U.S. locations
1
States / cities
Miami, Florida
Conditions
Schizophenia Disorder, Schizoaffective Disorder, Bipolar Disorder, Psychiatric Disorders
Interventions
Reduction of anticholinergic medication
Other
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years and older
Enrollment
53 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
4
States / cities
Altoona, Pennsylvania • Erie, Pennsylvania • McKeesport, Pennsylvania + 1 more
Conditions
Cocaine-Related Disorders
Interventions
Benztropine
Drug
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
22 Years to 48 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2003
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Conditions
Temporomandibular Joint Disorders
Interventions
Nortriptyline Oral Capsule, Benztropine Oral Product, CBT, Disease MGT
Drug · Behavioral
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 65 Years
Enrollment
140 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2008
U.S. locations
1
States / cities
Baltimore, Maryland
Completed Phase 4 Interventional Results available

NMDA Antagonists in Bipolar Depression

NCT01833897
Conditions
Bipolar Disorder
Interventions
Standard of Care, Ketamine, D-cycloserine
Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
18 Years to 60 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
1
States / cities
New York, New York
Completed Phase 2 Interventional Results available

Efficacy of Antidepressants in Chronic Back Pain

NCT00964886
Conditions
Back Pain
Interventions
cognitive behavioral therapy, desipramine hydrochloride, benztropine mesylate 0.125 mg daily
Behavioral · Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years to 70 Years
Enrollment
142 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
1
States / cities
San Diego, California
Conditions
Agitation
Interventions
Quetiapine, Haloperidol, Lorazepam, Cogentin
Drug
Lead sponsor
University of Southern California
Other
Eligibility
18 Years to 60 Years
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
Los Angeles, California
Conditions
Back Pain, Sciatica
Interventions
Desipramine, Fluoxetine, Benztropine
Drug
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
21 Years to 65 Years
Enrollment
130 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1999 – 2004
U.S. locations
1
States / cities
San Diego, California
Recruiting Phase 4 Interventional Accepts healthy volunteers

Anticholinergic Deprescription in Schizophrenia

NCT06562608
Conditions
Schizophrenia, Schizoaffective Disorder
Interventions
Anticholinergic Deprescription, No Anticholinergic Deprescription
Drug
Lead sponsor
Deepak K. Sarpal, M.D.
Other
Eligibility
40 Years to 70 Years
Enrollment
105 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania