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ClinicalTrials.gov public records Last synced Sep 30, 2026, 9:21 PM EDT

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Showing 1–24 of 228 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: N-acetyl-cysteine (NAC) Clear all
Completed Phase 1Phase 2 Interventional Results available

The Effects of Kynurenine Aminotransferase Inhibition in People With Schizophrenia

NCT04013555
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder, Schizophreniform Disorder
Interventions
N-acetylcysteine (NAC), Placebo, Tryptophan
Drug
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 55 Years
Enrollment
88 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
Catonsville, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 11, 2026 · Synced Sep 30, 2026, 9:21 PM EDT
Completed Phase 2 Interventional

Intravenous N-Acetylcysteine for the Treatment of Acute Ischemic Stroke

NCT04918719
View directory record Official record
Conditions
Acute Ischemic Stroke
Interventions
Acetylcysteine, Dextrose in Water
Drug
Lead sponsor
Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center
Other
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Torrance, California
Source: ClinicalTrials.gov public record
Updated Feb 19, 2026 · Synced Sep 30, 2026, 9:21 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

N-acetylcysteine for Tobacco Use Disorder

NCT02737358
View directory record Official record
Conditions
Nicotine Dependence, Smoking
Interventions
N-acetylcysteine (NAC), Placebo
Drug · Other
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 65 Years
Enrollment
114 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Aug 17, 2020 · Synced Sep 30, 2026, 9:21 PM EDT
Completed Phase 4 Interventional Results available

Open-Label Study of N-Acetylcysteine in Children and Adolescents 5-17 With Bipolar Spectrum Disorders

NCT02357290
View directory record Official record
Conditions
Bipolar Disorder
Interventions
Open-label Treatment with N-Acetylcysteine
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
5 Years to 17 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 4, 2019 · Synced Sep 30, 2026, 9:21 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Antioxidant Therapy in RYR1-Related Congenital Myopathy

NCT02362425
View directory record Official record
Conditions
Neuromuscular Disease
Interventions
N-acetylcysteine, Placebo
Drug
Lead sponsor
National Institute of Nursing Research (NINR)
NIH
Eligibility
7 Years and older
Enrollment
63 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 24, 2019 · Synced Sep 30, 2026, 9:21 PM EDT
Completed Early Phase 1 Interventional

Topiramate Augmenting Strategies for the Treatment of Alcohol Use Disorder

NCT03120468
View directory record Official record
Conditions
Alcoholism
Interventions
Topiramate and N-Acetyl Cysteine, Topiramate and Placebo
Drug
Lead sponsor
Nassima Ait-Daoud Tiouririne
Other
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated May 27, 2026 · Synced Sep 30, 2026, 9:21 PM EDT
Recruiting Phase 1 Interventional

Study of N-acetylcysteine in the Treatment of Patients With the m.3243A>G Mutation and Low Brain Glutathione Levels

NCT05241262
View directory record Official record
Conditions
Mitochondrial Disease
Interventions
N-Acetylcysteine
Drug
Lead sponsor
Michio Hirano, MD
Other
Eligibility
18 Years to 80 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 23, 2026 · Synced Sep 30, 2026, 9:21 PM EDT
Active, not recruiting Phase 4 Interventional

The Effects of Positive Airway Pressure on the Mucolytic Effects of NAC (TEAM)

NCT06152653
View directory record Official record
Conditions
Asthma, COPD
Interventions
n-acetylcystine (NAC)+ albuterol, AeroEclipse-VersaPAP System
Drug · Device
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 85 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Aug 13, 2026 · Synced Sep 30, 2026, 9:21 PM EDT
Not yet recruiting Early Phase 1 Interventional Accepts healthy volunteers

The MIND Study: The MGH/MIT Investigation of NAC on Dysregulation

NCT07323446
View directory record Official record
Conditions
Emotional Dysregulation
Interventions
N-Acetyl Cysteine (NAC), Placebo
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
6 Years to 12 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2027 – 2030
U.S. locations
2
States / cities
Boston, Massachusetts • Cambridge, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 17, 2026 · Synced Sep 30, 2026, 9:21 PM EDT
Recruiting Phase 2 Interventional

Targeting Reactive Oxygen Species Production as a Novel Therapeutic in Fuch's Endothelial Corneal Dystrophy

NCT04440280
View directory record Official record
Conditions
Fuchs Endothelial Corneal Dystrophy
Interventions
N-acetyl cysteine (NAC) 10% solution, N-acetyl cysteine (NAC) 20% solution, Visine Dry Eye Relief eye drops
Drug
Lead sponsor
Massachusetts Eye and Ear Infirmary
Other
Eligibility
21 Years and older
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 2, 2026 · Synced Sep 30, 2026, 9:21 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

The Effects of a Glutathione Precursor (FT061452),on Serum and Intracellular Glutathione Levels

NCT01251315
View directory record Official record
Conditions
Oxidative Stress
Interventions
Placebo low dose, N Acetyl cysteine, 600mg (low dose), Proimmune 200 (FT061452) 3000mg low dose, Placebo (high dose), N Acetyl cysteine, 1200mg (high dose), FT061452, 6000mg high dose
Drug
Lead sponsor
Charles Drew University of Medicine and Science
Other
Eligibility
30 Years to 65 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 14, 2014 · Synced Sep 30, 2026, 9:21 PM EDT
Completed Phase 2 Interventional Results available

N-acetylcysteine Plus Naltrexone for the Treatment of Alcohol Dependence

NCT01214083
View directory record Official record
Conditions
Alcoholism
Interventions
N-acetylcysteine + high-dose naltrexone (150 mg), High-dose naltrexone (150 mg) alone, Low-dose naltrexone (50 mg) alone
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years to 65 Years
Enrollment
111 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2016
U.S. locations
2
States / cities
West Haven, Connecticut • Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 8, 2020 · Synced Sep 30, 2026, 9:21 PM EDT
Suspended Not applicable Interventional

Mucomyst for Hepatitis C

NCT00493610
View directory record Official record
Conditions
Hepatitis C
Interventions
N-acetylcysteine(Mucomyst)
Drug
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
18 Years to 80 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Dayton, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 8, 2010 · Synced Sep 30, 2026, 9:21 PM EDT
Withdrawn Phase 1 Interventional

N-acetylcysteine Given IV With Cisplatin and Paclitaxel in Patients With Ovarian Cancer

NCT01138137
View directory record Official record
Conditions
Ovarian Carcinoma, Stage 3 or 4, Epithelial Ovarian Carcinoma, Primary Peritoneal Carcinoma
Interventions
Paclitaxel, N-acetylcysteine, Cisplatin
Drug
Lead sponsor
OHSU Knight Cancer Institute
Other
Eligibility
18 Years to 75 Years · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Apr 21, 2017 · Synced Sep 30, 2026, 9:21 PM EDT
Completed No phase listed Observational

Effects of N-acetylcysteine on Brain Chemistry and Behavior in Cocaine Abusers (NAC)

NCT01392092
View directory record Official record
Conditions
Cocaine Abuse or Dependence, Cocaine Related Disorders
Interventions
Not listed
Lead sponsor
Wayne State University
Other
Eligibility
18 Years to 55 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Apr 5, 2018 · Synced Sep 30, 2026, 9:21 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Intravenous N-acetylcysteine for the Treatment of Gaucher's Disease and Parkinson's Disease

NCT01427517
View directory record Official record
Conditions
Parkinson's Disease, Gaucher's Disease
Interventions
N-acetylcysteine
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
9 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Nov 1, 2019 · Synced Sep 30, 2026, 9:21 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

NAC-003 P.L.U.S. Program (Progress Through Learning Understanding & Support)

NCT01370954
View directory record Official record
Conditions
Early Memory Loss, Mild Cognitive Impairment, Alzheimer's Disease, Vascular Dementia
Interventions
CerefolinNAC®
Other
Lead sponsor
Pamlab, Inc.
Industry
Eligibility
50 Years to 80 Years
Enrollment
204 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Hickory, North Carolina
Source: ClinicalTrials.gov public record
Updated May 9, 2013 · Synced Sep 30, 2026, 9:21 PM EDT
Not listed Not applicable Interventional

N-Acetylcysteine for Patients With COPD and ChronicBronchitis

NCT01599884
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease, Chronic Bronchitis
Interventions
N-acetylcysteine, Oral acetylcysteine
Drug
Lead sponsor
Center for Veterans Research and Education
Other
Eligibility
40 Years to 85 Years
Enrollment
65 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated May 16, 2012 · Synced Sep 30, 2026, 9:21 PM EDT
Completed Phase 1 Interventional

Role of HIV on Glutathione Synthesis and Oxidative Stress

NCT01355198
View directory record Official record
Conditions
HIV Infection, Erythrocyte Glutathione Deficiency
Interventions
Cysteine (as n-acetylcysteine) and glycine, Cysteine/glycine
Dietary Supplement
Lead sponsor
Baylor College of Medicine
Other
Eligibility
21 Years to 70 Years · Male only
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Feb 7, 2013 · Synced Sep 30, 2026, 9:21 PM EDT
Recruiting Phase 2Phase 3 Interventional

Targeting the Neurobiology of RRB in Autism Using N-acetylcysteine: Trial

NCT05664789
View directory record Official record
Conditions
Autism Spectrum Disorder
Interventions
N acetyl cysteine, Placebo
Drug
Lead sponsor
Stanford University
Other
Eligibility
3 Years to 12 Years
Enrollment
144 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated May 15, 2026 · Synced Sep 30, 2026, 9:21 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

N-acetylcysteine and NMDA Antagonist Interactions

NCT00611897
View directory record Official record
Conditions
Cognitive Dysfunction
Interventions
N-acetylcysteine and ketamine, placebo and ketamine
Drug
Lead sponsor
Yale University
Other
Eligibility
21 Years to 45 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2011
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated May 8, 2015 · Synced Sep 30, 2026, 9:21 PM EDT
Active, not recruiting Phase 2 Interventional Accepts healthy volunteers

Treatment of Systemic Lupus Erythematosus (SLE) With N-acetylcysteine

NCT00775476
View directory record Official record
Conditions
Systemic Lupus Erythematosus
Interventions
N-acetylcysteine, Placebo
Drug
Lead sponsor
State University of New York - Upstate Medical University
Other
Eligibility
18 Years and older
Enrollment
290 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2028
U.S. locations
12
States / cities
Los Angeles, California • New Haven, Connecticut • Atlanta, Georgia + 8 more
Source: ClinicalTrials.gov public record
Updated Apr 24, 2026 · Synced Sep 30, 2026, 9:21 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Single Photon Emission Computed Tomography (SPECT) Imaging Study of Professional American Football Players

NCT01515839
View directory record Official record
Conditions
Traumatic Brain Injury
Interventions
Multivitamin Supplement intervention
Dietary Supplement
Lead sponsor
Amen Clinics, Inc.
Industry
Eligibility
18 Years and older · Male only
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Newport Beach, California
Source: ClinicalTrials.gov public record
Updated Jan 24, 2012 · Synced Sep 30, 2026, 9:21 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Overcoming Membrane Transporters to Improve CNS Drug Delivery - Improving Brain Antioxidants After Traumatic Brain Injury

NCT01322009
View directory record Official record
Conditions
Pediatric Traumatic Brain Injury
Interventions
Probenecid and N-acetyl cysteine, Placebo
Drug
Lead sponsor
University of Pittsburgh
Other
Eligibility
2 Years to 18 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 15, 2016 · Synced Sep 30, 2026, 9:21 PM EDT