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Showing 1–24 of 90 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: d-cycloserine (DCS) Clear all
Completed Phase 1 Interventional

Investigation of Cycloserine as a Smoking Cessation Treatment

NCT01062932
View directory record Official record
Conditions
Nicotine Addiction
Interventions
Cycloserine, Placebo
Drug
Lead sponsor
Baylor College of Medicine
Other
Eligibility
18 Years to 55 Years
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 26, 2012 · Synced Sep 9, 2026, 11:18 AM EDT
Completed Phase 2 Interventional Results available

D-cycloserine in the Management of Chronic Low Back Pain

NCT00125528
View directory record Official record
Conditions
Low Back Pain, Pain
Interventions
D-cycloserine, placebo
Drug
Lead sponsor
Thomas J. Schnitzer
Other
Eligibility
18 Years and older
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 8, 2017 · Synced Sep 9, 2026, 11:18 AM EDT
Terminated Phase 2 Interventional Results available

Efficacy of D-Cycloserine for Enhancing the Effects of CBT for Substance Use

NCT00430573
View directory record Official record
Conditions
Substance-Related Disorders
Interventions
D-cycloserine, Placebo
Drug
Lead sponsor
Boston University Charles River Campus
Other
Eligibility
18 Years to 70 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 16, 2018 · Synced Sep 9, 2026, 11:18 AM EDT
Completed Not applicable Interventional

Augmenting Exposure Therapy With an N-Methyl-D-Aspartate (NMDA) Agonist for Panic Disorder

NCT00131339
View directory record Official record
Conditions
Panic Disorder
Interventions
Cognitive behavioral therapy, D-cycloserine
Behavioral · Drug
Lead sponsor
Hartford Hospital
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2007
U.S. locations
2
States / cities
Hartford, Connecticut • Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 25, 2009 · Synced Sep 9, 2026, 11:18 AM EDT
Completed Early Phase 1 Interventional Results available

D-Cycloserine Augmentation of Behavior Therapy for Individuals With Body Dysmorphic Disorder

NCT00842309
View directory record Official record
Conditions
Body Dysmorphic Disorder
Interventions
d-cycloserine, Placebo
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
68 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2018
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 17, 2019 · Synced Sep 9, 2026, 11:18 AM EDT
Not listed Early Phase 1 Interventional

Augmentation of Cognitive Training in Children With TBI With D-Cyloserine

NCT02312635
View directory record Official record
Conditions
Traumatic Brain Injury
Interventions
D-Cycloserine, Cogmed Working Memory Training
Drug · Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
11 Years to 18 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Dec 8, 2014 · Synced Sep 9, 2026, 11:18 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

fMRI Study Examining Effects of D-cycloserine in Specific Phobia

NCT00591825
View directory record Official record
Conditions
Phobias
Interventions
D-cycloserine, Placebo
Drug
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years to 55 Years
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2012
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Jun 4, 2017 · Synced Sep 9, 2026, 11:18 AM EDT
Withdrawn Phase 4 Interventional

Once Weekly D-cycloserine for Schizophrenia

NCT00964041
View directory record Official record
Conditions
Schizophrenia
Interventions
D-cycloserine, Placebo
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 19, 2013 · Synced Sep 9, 2026, 11:18 AM EDT
Not listed Phase 2 Interventional

The Use of D-Cycloserine to Augment CBT for Pediatric OCD

NCT01687140
View directory record Official record
Conditions
Obsessive-Compulsive Disorder
Interventions
D-Cycloserine, Placebo
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
7 Years to 17 Years
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Sep 17, 2012 · Synced Sep 9, 2026, 11:18 AM EDT
Completed Phase 3 Interventional Results available

Effect of D-cycloserine Plus Cognitive Behavioral Therapy on People With Social Phobia

NCT00515879
View directory record Official record
Conditions
Social Anxiety Disorder
Interventions
D-cycloserine, Cognitive behavioral therapy (CBT), Placebo
Drug · Behavioral
Lead sponsor
Boston University Charles River Campus
Other
Eligibility
18 Years and older
Enrollment
169 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 25, 2019 · Synced Sep 9, 2026, 11:18 AM EDT
Completed Phase 2Phase 3 Interventional Results available

D-cycloserine and Virtual Reality Exposure to Treat Iraq War Veterans With PTSD

NCT00356278
View directory record Official record
Conditions
Stress Disorder, Post Traumatic
Interventions
D-Cycloserine, Alprazolam, Virtual Reality Exposure Therapy, Placebo
Drug · Behavioral
Lead sponsor
Emory University
Other
Eligibility
21 Years to 65 Years
Enrollment
156 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2014
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jan 7, 2016 · Synced Sep 9, 2026, 11:18 AM EDT
Completed Phase 4 Interventional Results available

D-Cycloserine Enhancement of Exposure in Social Phobia

NCT00633984
View directory record Official record
Conditions
Social Anxiety Disorder
Interventions
Cognitive Behavioral Group Therapy (CBGT), D-Cycloserine, Placebo
Behavioral · Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
169 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2012
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 13, 2014 · Synced Sep 9, 2026, 11:18 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

D-Cycloserine and Social Skills Training in Autism Spectrum Disorders

NCT01086475
View directory record Official record
Conditions
Autistic Disorder, Asperger's Disorder, Pervasive Developmental Disorder NOS
Interventions
D-cycloserine, Placebo
Drug
Lead sponsor
Indiana University
Other
Eligibility
5 Years to 11 Years
Enrollment
68 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2014
U.S. locations
2
States / cities
Indianapolis, Indiana • Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 13, 2016 · Synced Sep 9, 2026, 11:18 AM EDT
Completed Phase 3 Interventional Results available

A Randomized Controlled Trial of Cognitive Remediation and D-cycloserine for Individuals With Bipolar Disorder

NCT01934972
View directory record Official record
Conditions
Bipolar Disorder
Interventions
CR + DCS (D-cycloserine), CR + placebo
Other
Lead sponsor
University of Arizona
Other
Eligibility
18 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Jun 15, 2020 · Synced Sep 9, 2026, 11:18 AM EDT
Completed Phase 1Phase 2 Interventional Results available

D-cycloserine and Treatment of Feeding Disorders

NCT01923896
View directory record Official record
Conditions
Feeding Disorders, Specific Phobia
Interventions
Behavioral Intervention, d-cycloserine (DCS), Placebo
Behavioral · Drug
Lead sponsor
Emory University
Other
Eligibility
18 Months to 6 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Oct 22, 2014 · Synced Sep 9, 2026, 11:18 AM EDT
Not yet recruiting Phase 2Phase 3 Interventional

Optimized, Neuroplasticity-Enhanced-Depression (ONE-D) Transcranial Magnetic Stimulation (TMS) Treatment for Female Athletes With Co-morbid Depression and Concussion

NCT07507214
View directory record Official record
Conditions
Concussion, Depression
Interventions
ONE-D TMS protocol and d-cycloserine (125 mg)
Device
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 65 Years · Female only
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Ocala, Florida
Source: ClinicalTrials.gov public record
Updated Aug 17, 2026 · Synced Sep 9, 2026, 11:18 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

The Cognitive Enhancing Effects of D-Cycloserine Among Non-Demented Elderly

NCT01361633
View directory record Official record
Conditions
Treatment, Placebo
Interventions
d-cycloserine, Sugar Pill
Drug
Lead sponsor
Hartford Hospital
Other
Eligibility
60 Years and older
Enrollment
51 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 17, 2021 · Synced Sep 9, 2026, 11:18 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

The Effects of D-cycloserine on Stimulus Generalization of Conditioned Fear Healthy Controls.

NCT01733030
View directory record Official record
Conditions
Post Traumatic Stress Syndrome
Interventions
Seromycin
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 55 Years
Enrollment
56 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated May 3, 2017 · Synced Sep 9, 2026, 11:18 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Food Exposure Therapy in Anorexia Nervosa

NCT00755820
View directory record Official record
Conditions
Anorexia Nervosa
Interventions
Exposure Therapy + D-Cycloserine, Exposure Therapy + Placebo, Supportive Psychotherapy
Behavioral
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
18 Years to 45 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2012
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 25, 2012 · Synced Sep 9, 2026, 11:18 AM EDT
Terminated Phase 2 Interventional Results available

D-cycloserine for the Treatment of Chronic, Refractory Low Back Pain

NCT03535688
View directory record Official record
Conditions
Low Back Pain, Pain
Interventions
D-cycloserine, Placebo
Drug
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older
Enrollment
203 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 3, 2026 · Synced Sep 9, 2026, 11:18 AM EDT
Completed Phase 2 Interventional

Treatment of Chronic Bothersome Tinnitus Using Cognitive Training and D-cycloserine

NCT01550796
View directory record Official record
Conditions
Tinnitus
Interventions
Cognitive Training
Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
35 Years to 65 Years
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated May 22, 2013 · Synced Sep 9, 2026, 11:18 AM EDT
Completed Phase 2 Interventional Results available

Sequential Therapy for the Treatment of Severe Bipolar Depression.

NCT02974010
View directory record Official record
Conditions
Bipolar Depression, Suicidal Ideas, Suicidal Ideation, Suicide, Attempted
Interventions
NRX-101 Oral Capsule, Lurasidone Oral Capsule, Ketamine Intravenous Infusion, Saline Solution Intravenous Infusion
Drug
Lead sponsor
NeuroRx, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
4
States / cities
Birmingham, Alabama • Fort Lauderdale, Florida • Charlotte, North Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated May 24, 2021 · Synced Sep 9, 2026, 11:18 AM EDT
Recruiting Phase 1Phase 2 Interventional

A Pilot Trial of One-Day Accelerated TMS and D-cycloserine in Suicidal Patients With Borderline Personality Disorder

NCT07460947
View directory record Official record
Conditions
Borderline Personality Disorder (BPD)
Interventions
TMS, D-Cycloserine (DCS)
Device · Drug
Lead sponsor
Mclean Hospital
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Belmont, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 4, 2026 · Synced Sep 9, 2026, 11:18 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Glycine and Oral D-Cycloserine in Alcoholic Patients and Healthy Subjects

NCT00635102
View directory record Official record
Conditions
Alcohol Dependence
Interventions
D-Cycloserine PO and Glycine IV, Placebo D-Cycloserine PO and placebo Glycine IV, Placebo D-Cycloserine PO and Glycine IV, D-Cycloserine PO and placebo Glycine IV
Drug
Lead sponsor
Yale University
Other
Eligibility
21 Years to 70 Years
Enrollment
57 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1997 – 2008
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Dec 15, 2016 · Synced Sep 9, 2026, 11:18 AM EDT