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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 Clear all
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 2, 2026, 5:38 PM 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 2, 2026, 5:38 PM EDT
Recruiting Early Phase 1 Interventional

Synaptic Mechanisms of Continuous Theta Burst Stimulation in Depression

NCT07560878
View directory record Official record
Conditions
Major Depression
Interventions
D-Cycloserine (DCS), Continuous theta-burst stimulation (cTBS), Transcranial Magnetic Stimulation Sham, Memantine, Lorazepam (drug), Baclofen, Placebo
Drug · Device
Lead sponsor
Mclean Hospital
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
Belmont, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 12, 2026 · Synced Sep 2, 2026, 5:38 PM EDT
Completed Phase 2Phase 3 Interventional

NRX101 Glx Biomarker Validation Study

NCT03402152
View directory record Official record
Conditions
Bipolar Depression, Suicidal Ideation
Interventions
NRX-101, Lurasidone HCl, Placebo
Drug
Lead sponsor
NeuroRx, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 8, 2022 · Synced Sep 2, 2026, 5:38 PM EDT
Completed Not applicable Interventional Results available

A Placebo-Controlled Trial of D-Cycloserine and Exposure Therapy for Combat-PTSD

NCT00371176
View directory record Official record
Conditions
Combat Disorders, Stress Disorders, Post-Traumatic
Interventions
Exposure therapy, D-Cycloserine, Placebo pill
Behavioral · Drug · Other
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
18 Years and older
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2012
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 3, 2014 · Synced Sep 2, 2026, 5:38 PM 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 2, 2026, 5:38 PM EDT
Completed Not applicable Interventional Results available

D-Cycloserine Augmentation to CBT With Exposure and Response Prevention in Adults and Adolescents With OCD

NCT01172873
View directory record Official record
Conditions
Obsessive Compulsive Disorder
Interventions
D-cycloserine, Exposure and Response Prevention (EX/RP)
Drug · Behavioral
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
12 Years to 17 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 18, 2014 · Synced Sep 2, 2026, 5:38 PM EDT
Not yet recruiting Phase 1Phase 2 Interventional Accepts healthy volunteers

Synaptic Mechanisms of Intermittent Theta Burst Stimulation for Major Depressive Disorder

NCT07593222
View directory record Official record
Conditions
Major Depression, Healthy Participants
Interventions
Sham iTBS, TMS, D-cycloserine, Dextromethophan, Placebo
Device · Drug
Lead sponsor
Mclean Hospital
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2031
U.S. locations
1
States / cities
Belmont, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 13, 2026 · Synced Sep 2, 2026, 5:38 PM EDT
Withdrawn Phase 3 Interventional

Glycine and D-Cycloserine in Schizophrenia

NCT00000372
View directory record Official record
Conditions
Schizophrenia
Interventions
D-cycloserine, Glycine, Clozapine, Placebo
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
1998 – 2005
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 11, 2014 · Synced Sep 2, 2026, 5:38 PM EDT
Completed Phase 2Phase 3 Interventional

NRX-101 for Bipolar Depression With Subacute Suicidal Ideation

NCT03395392
View directory record Official record
Conditions
Bipolar Depression, Suicidal Ideation and Behavior
Interventions
NRX-101, Lurasidone HCl
Drug
Lead sponsor
NeuroRx, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
74 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
14
States / cities
Culver City, California • Miami Lakes, Florida • Atlanta, Georgia + 10 more
Source: ClinicalTrials.gov public record
Updated May 7, 2024 · Synced Sep 2, 2026, 5:38 PM 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 2, 2026, 5:38 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Improving Learning-based Treatment of Cocaine Dependence With Medication

NCT01526538
View directory record Official record
Conditions
COCAINE-RELATED DISORDERS
Interventions
d-cycloserine, sugar pill
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 60 Years
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 14, 2017 · Synced Sep 2, 2026, 5:38 PM 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 2, 2026, 5:38 PM 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 2, 2026, 5:38 PM EDT
Terminated Not applicable Interventional Results available

Imaginal Exposure & D-Cycloserine (DCS) for Posttraumatic Stress Disorder (PTSD)

NCT00875342
View directory record Official record
Conditions
Posttraumatic Stress Disorder
Interventions
DCS, Placebo
Drug · Other
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years to 70 Years
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2018
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 15, 2021 · Synced Sep 2, 2026, 5:38 PM EDT
Completed Phase 2 Interventional Results available

NMDA Receptors in Motor Learning in Humans

NCT02082912
View directory record Official record
Conditions
Stroke
Interventions
D-cycloserine, Placebo, HandMentor Pro
Drug · Other · Device
Lead sponsor
Emory University
Other
Eligibility
18 Years to 95 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Nov 6, 2018 · Synced Sep 2, 2026, 5:38 PM EDT
Completed Phase 4 Interventional

D-Cycloserine for Serine Palmitoyltransferase Inhibition

NCT07542548
View directory record Official record
Conditions
Hereditary Spastic Paraplegia
Interventions
D-cycloserine
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
6 Years to 6 Years · Female only
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 20, 2026 · Synced Sep 2, 2026, 5:38 PM 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 2, 2026, 5:38 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

D-Cycloserine to Enhance Cognitive Behavioral Therapy (CBT) for Acrophobia

NCT01102803
View directory record Official record
Conditions
Phobic Disorders
Interventions
Individual Cognitive Behavioral Therapy (CBT), D-Cycloserine, Placebo
Behavioral · Drug
Lead sponsor
Southern Methodist University
Other
Eligibility
18 Years to 65 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Feb 20, 2013 · Synced Sep 2, 2026, 5:38 PM 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 2, 2026, 5:38 PM EDT
Completed Not applicable Interventional

A Medication Trial Combined With Behavior Therapy for Individuals With Obsessive-compulsive Disorder

NCT00126282
View directory record Official record
Conditions
Obsessive-Compulsive Disorder
Interventions
behavior therapy, D-Cycloserine
Behavioral · Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2007
U.S. locations
2
States / cities
Hartford, Connecticut • Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 28, 2009 · Synced Sep 2, 2026, 5:38 PM EDT
Withdrawn Phase 2Phase 3 Interventional

Effect of D-cycloserine on a Short Imagery Rescripting Intervention for Subclinical PTSD

NCT03216356
View directory record Official record
Conditions
PTSD
Interventions
CBT + ImRs, CBT + I.E., D-Cycloserine, Placebo, Study Pill
Behavioral · Drug
Lead sponsor
Boston University Charles River Campus
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 7, 2023 · Synced Sep 2, 2026, 5:38 PM 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 2, 2026, 5:38 PM EDT
Completed Not applicable Interventional Results available

Exposure, D-cycloserine Enhancement, and Functional Magnetic Resonance Imaging (fMRI) in Snake Phobics

NCT01450306
View directory record Official record
Conditions
Specific Phobia
Interventions
D-cycloserine, Exposure therapy, Placebo
Drug · Behavioral
Lead sponsor
Hartford Hospital
Other
Eligibility
18 Years to 75 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 14, 2024 · Synced Sep 2, 2026, 5:38 PM EDT