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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 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 25, 2026, 5:04 PM EDT
Completed Phase 2 Interventional Results available

Improving Therapeutic Learning in Depression: Proof of Concept

NCT02376257
View directory record Official record
Conditions
Major Depressive Disorder
Interventions
250 mg DCS, 100 mg Modafinil, Placebo
Drug
Lead sponsor
Boston University Charles River Campus
Other
Eligibility
18 Years to 65 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 18, 2018 · Synced Sep 25, 2026, 5:04 PM EDT
Completed Phase 2 Interventional Results available

Effect of D-cycloserine on Treatment of Posttraumatic Stress Disorder (PTSD) in Youth

NCT01157416
View directory record Official record
Conditions
Posttraumatic Stress Disorders, PTSD
Interventions
D-cycloserine, Placebo pill, CBT
Drug · Behavioral
Lead sponsor
Tulane University School of Medicine
Other
Eligibility
7 Years to 12 Years
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Apr 20, 2017 · Synced Sep 25, 2026, 5:04 PM EDT
Terminated Phase 4 Interventional Results available

Treating Urological Chronic Pelvic Pain Syndrome (UCPPS) Pain

NCT02385266
View directory record Official record
Conditions
Chronic Prostatitis With Chronic Pelvic Pain Syndrome
Interventions
D-Cycloserine, Placebo (for D-cycloserine)
Drug
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older · Male only
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 16, 2023 · Synced Sep 25, 2026, 5:04 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 25, 2026, 5:04 PM EDT
Completed Not applicable Interventional Results available

Virtual Reality & D-cycloserine (DCS) for Posttraumatic Stress Disorder (PTSD)

NCT00632632
View directory record Official record
Conditions
Posttraumatic Stress Disorder
Interventions
D-Cycloserine, Placebo
Drug · Other
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years to 70 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2012
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 26, 2015 · Synced Sep 25, 2026, 5:04 PM EDT
Not yet recruiting Early Phase 1 Interventional

Single Day of Ultra-accelerated TMS With a Single Dose of NRX-101

NCT07785102
View directory record Official record
Conditions
Major Depression
Interventions
TMS, NRX-101
Device · Drug
Lead sponsor
Mclean Hospital
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Belmont, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 21, 2026 · Synced Sep 25, 2026, 5:04 PM EDT
Completed Phase 3 Interventional

Safety and Effectiveness of D-Cycloserine in Children With Autism

NCT00198120
View directory record Official record
Conditions
Autistic Disorder
Interventions
D-cycloserine, Placebo
Drug
Lead sponsor
Indiana University
Other
Eligibility
3 Years to 12 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2010
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Apr 11, 2016 · Synced Sep 25, 2026, 5:04 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 25, 2026, 5:04 PM EDT
Completed Phase 3 Interventional Results available

Enhancing Exposure Therapy for Post Traumatic Stress Disorder (PTSD): Virtual Reality and Imaginal Exposure With a Cognitive Enhancer

NCT01352637
View directory record Official record
Conditions
Post Traumatic Stress Disorder
Interventions
DCS (D-Cycloserine ) + Prolonged Imaginal Exposure, DCS (D-Cycloserine ) + Virtual Reality Exposure, Placebo + Prolonged Imaginal Exposure, Placebo (sugar pill) + Virtual Reality Exposure
Drug
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years to 70 Years
Enrollment
192 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2018
U.S. locations
5
States / cities
Long Beach, California • Los Angeles, California • Atlanta, Georgia + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 1, 2019 · Synced Sep 25, 2026, 5:04 PM EDT
Completed Not applicable Interventional Results available

2/2 D-Cycloserine Augmentation of CBT for Pediatric OCD

NCT01404208
View directory record Official record
Conditions
Obsessive-Compulsive Disorder
Interventions
D-Cycloserine, Placebo
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
7 Years to 17 Years
Enrollment
206 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 27, 2017 · Synced Sep 25, 2026, 5:04 PM EDT
Completed Phase 2 Interventional Results available

Use of an Antibiotic as an Enhancer for the Treatment of Social Phobia

NCT00128401
View directory record Official record
Conditions
Phobic Disorders, Anxiety, Social Phobia
Interventions
D-Cycloserine, Placebo
Drug
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
8 Years to 55 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2012
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated May 19, 2014 · Synced Sep 25, 2026, 5:04 PM 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 25, 2026, 5:04 PM EDT
Completed Phase 4 Interventional Results available

D-Cycloserine Augmentation of Cognitive Behavioral Therapy for Delusions

NCT01981759
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder, Delusional Disorder
Interventions
D-Cycloserine, Placebo, Cognitive Behavioral Therapy
Drug · Other · Behavioral
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 68 Years
Enrollment
58 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
2
States / cities
Baltimore, Maryland • New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 24, 2020 · Synced Sep 25, 2026, 5:04 PM EDT
Withdrawn Phase 2 Interventional

D-Cycloserine and Virtual Reality Exposure Therapy

NCT02933684
View directory record Official record
Conditions
Social Anxiety Disorder
Interventions
Seromycin, Virtual Reality Exposure Therapy, Placebo
Drug · Behavioral
Lead sponsor
Georgia State University
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Apr 12, 2018 · Synced Sep 25, 2026, 5:04 PM 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 25, 2026, 5:04 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 25, 2026, 5:04 PM EDT
Terminated Early Phase 1 Interventional Accepts healthy volunteers

AIH for Spinal Cord Repair

NCT03780829
View directory record Official record
Conditions
SCI
Interventions
hypoxia, sham hypoxia, D-cycloserine, sham-NMDA agonist, exercise training
Behavioral · Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years to 85 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2026
U.S. locations
1
States / cities
Hines, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 26, 2026 · Synced Sep 25, 2026, 5:04 PM EDT
Available No phase listed Expanded access

NRX-101 Expanded Access

NCT05779267
View directory record Official record
Conditions
Treatment-Resistant Depression
Interventions
NRX-101, Transcranial Magnetic Stimulation Sham
Drug · Device
Lead sponsor
NeuroRx, Inc.
Industry
Eligibility
18 Years and older
U.S. locations
1
States / cities
Belmont, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 16, 2026 · Synced Sep 25, 2026, 5:04 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Lower Limb Function After Spinal Cord Injury

NCT02635893
View directory record Official record
Conditions
Spinal Cord Injury
Interventions
D-Cycloserine, Placebo, Training, Stimulation, Placebo Stimulation
Drug · Other
Lead sponsor
Shirley Ryan AbilityLab
Other
Eligibility
18 Years to 85 Years
Enrollment
257 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 30, 2021 · Synced Sep 25, 2026, 5:04 PM 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 25, 2026, 5:04 PM EDT
Completed Not applicable Interventional Results available

Cognitive Enhancement and Relapse Prevention in Cocaine Addiction

NCT01067846
View directory record Official record
Conditions
Cocaine Addiction
Interventions
Seromycin (D-cycloserine, DCS), Placebo, Computerized Cognitive Behavioral Therapy
Drug · Behavioral
Lead sponsor
University of Arkansas
Other
Eligibility
18 Years to 65 Years
Enrollment
85 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Nov 25, 2013 · Synced Sep 25, 2026, 5:04 PM 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 25, 2026, 5:04 PM 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 25, 2026, 5:04 PM EDT