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Showing 1–24 of 205 matching trials from the live ClinicalTrials.gov search.
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Withdrawn Phase 4 Interventional

A Pilot Study Investigating the Efficacy of Minocycline and N-Acetyl Cysteine for Bipolar Depression

NCT02719392
View directory record Official record
Conditions
Bipolar Disorder, Bipolar Depression
Interventions
N-acetylcysteine, Minocycline, Placebo
Dietary Supplement · Drug · Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 23, 2026 · Synced Sep 15, 2026, 1:57 AM EDT
Terminated Phase 4 Interventional Results available

Study of N-Acetylcysteine in Acute Liver Failure (ALF)

NCT00896025
View directory record Official record
Conditions
Acute Liver Failure, Fulminant Hepatic Failure
Interventions
N-acetylcysteine
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 70 Years
Enrollment
255 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2016
U.S. locations
21
States / cities
Birmingham, Alabama • Los Angeles, California • Sacramento, California + 15 more
Source: ClinicalTrials.gov public record
Updated May 31, 2020 · Synced Sep 15, 2026, 1:57 AM EDT
Completed Not applicable Interventional Results available

Nipple-Areola Complex (NAC) Irradiation After Nipple-Sparing Mastectomy and Reconstruction

NCT01208974
View directory record Official record
Conditions
Breast Cancer, Ductal Carcinoma
Interventions
Nipple-Sparing Mastectomy, Breast Reconstruction, Axillary Surgery, Prophylactic Nipple-Areolar Complex RT
Procedure · Radiation
Lead sponsor
University of Miami
Other
Eligibility
18 Years and older · Female only
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2026
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Aug 12, 2026 · Synced Sep 15, 2026, 1:57 AM EDT
Completed Phase 3 Interventional Results available

N-acetylcysteine in Non-Acetaminophen Pediatric Acute Liver Failure

NCT00248625
View directory record Official record
Conditions
Acute Liver Failure, Hepatic Encephalopathy
Interventions
N-acetylcysteine, Placebo
Drug
Lead sponsor
University of Pittsburgh
Other
Eligibility
Up to 18 Years
Enrollment
184 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2010
U.S. locations
17
States / cities
San Francisco, California • Denver, Colorado • Atlanta, Georgia + 13 more
Source: ClinicalTrials.gov public record
Updated Jul 27, 2016 · Synced Sep 15, 2026, 1:57 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effectiveness of N-acetylcysteine in Treating Cocaine Dependent Individuals - 1

NCT00136825
View directory record Official record
Conditions
Cocaine-Related Disorders
Interventions
N-Acetylcysteine, Placebo
Drug
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 45 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2005
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Jan 11, 2017 · Synced Sep 15, 2026, 1:57 AM EDT
Active, not recruiting Phase 2 Interventional

Neuroprotection With N-acetyl Cysteine for Patients With Progressive Multiple Sclerosis

NCT05122559
View directory record Official record
Conditions
Multiple Sclerosis, Multiple Sclerosis, Primary Progressive, Multiple Sclerosis, Secondary Progressive
Interventions
N-acetyl cysteine, Placebo
Drug
Lead sponsor
Emmanuelle Waubant, MD PhD
Other
Eligibility
40 Years to 70 Years
Enrollment
98 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Mar 10, 2026 · Synced Sep 15, 2026, 1:57 AM EDT
Completed Phase 2 Interventional Results available

Effectiveness of N-Acetylcysteine (NAC) in Treating Cocaine Dependent Individuals - 1

NCT00218491
View directory record Official record
Conditions
Cocaine Dependence
Interventions
N-Acetylcysteine, Matching Placebo
Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 65 Years
Enrollment
111 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2010
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Jan 14, 2019 · Synced Sep 15, 2026, 1:57 AM EDT
Not yet recruiting Phase 2 Interventional

Use of N-Acetylcysteine in the Treatment of Repetitive and Self-Injurious Behaviors in Cornelia de Lange Syndrome

NCT04381897
View directory record Official record
Conditions
Cornelia de Lange Syndrome
Interventions
N-acetyl cysteine, Placebo
Drug · Other
Lead sponsor
Johns Hopkins University
Other
Eligibility
13 Years to 35 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 13, 2026 · Synced Sep 15, 2026, 1:57 AM 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 18, 2026 · Synced Sep 15, 2026, 1:57 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study to Determine the Safety, Tolerability, and Pharmacokinetic Profile of HPN-07 and HPN-07 Plus NAC

NCT02259595
View directory record Official record
Conditions
Hearing Loss, Sensorineural Hearing Loss, Noise-Induced Hearing Loss
Interventions
HPN-07, NAC, Placebo
Drug
Lead sponsor
Otologic Pharmaceutics, Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Raleigh, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 30, 2015 · Synced Sep 15, 2026, 1:57 AM EDT
Completed Phase 2 Interventional Results available

N-Acetyl Cysteine in Trichotillomania

NCT00354770
View directory record Official record
Conditions
Trichotillomania
Interventions
Placebo, N-Acetyl Cysteine
Drug
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 22, 2023 · Synced Sep 15, 2026, 1:57 AM EDT
Completed Not applicable Interventional Results available

Effect of the Anti-oxidant N-acetylcysteine on Beta-cell Function in Type 2 Diabetes

NCT01394510
View directory record Official record
Conditions
Type 2 Diabetes, Oxidative Stress
Interventions
N-acetylcysteine
Drug
Lead sponsor
Utzschneider, Kristina, M.D.
Individual
Eligibility
18 Years to 75 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jun 16, 2016 · Synced Sep 15, 2026, 1:57 AM EDT
Completed Phase 2 Interventional Results available

A Study of Oral N-Acetylcysteine in Children With Autism Spectrum Disorders

NCT00453180
View directory record Official record
Conditions
Autistic Disorder, Asperger Syndrome, Child Development Disorders, Pervasive
Interventions
N-acetylcysteine, Placebo
Drug
Lead sponsor
Indiana University
Other
Eligibility
4 Years to 12 Years
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Jun 13, 2017 · Synced Sep 15, 2026, 1:57 AM EDT
Completed Not applicable Interventional

OA for Breast Cancer NAC Response

NCT05337280
View directory record Official record
Conditions
Breast Cancer
Interventions
Imagio OA/US
Device
Lead sponsor
Seno Medical Instruments Inc.
Industry
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Apr 11, 2023 · Synced Sep 15, 2026, 1:57 AM EDT
Completed Phase 3 Interventional Results available

Evaluating the Effectiveness of Prednisone, Azathioprine, and N-acetylcysteine in Patients With IPF

NCT00650091
View directory record Official record
Conditions
Pulmonary Fibrosis
Interventions
N-acetylcysteine (NAC), Placebo
Drug
Lead sponsor
Duke University
Other
Eligibility
35 Years to 85 Years
Enrollment
264 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2014
U.S. locations
26
States / cities
Birmingham, Alabama • Los Angeles, California • San Francisco, California + 20 more
Source: ClinicalTrials.gov public record
Updated Jun 1, 2015 · Synced Sep 15, 2026, 1:57 AM EDT
Completed Phase 1Phase 2 Interventional Results available

N-acetylcysteine in Alcohol Dependence

NCT00568087
View directory record Official record
Conditions
Alcoholism
Interventions
N-acetylcysteine, Placebo
Drug
Lead sponsor
Minneapolis Veterans Affairs Medical Center
Federal
Eligibility
18 Years to 65 Years
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 17, 2020 · Synced Sep 15, 2026, 1:57 AM EDT
Completed Phase 1 Interventional

The FIGHT-RP1 Study

NCT03063021
View directory record Official record
Conditions
Retinitis Pigmentosa
Interventions
N-Acetyl Cysteine (NAC)
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 18, 2022 · Synced Sep 15, 2026, 1:57 AM EDT
Completed No phase listed Observational

Treatment of Acetaminophen Toxicity With N-acetylcysteine

NCT00725179
View directory record Official record
Conditions
Acetaminophen Toxicity
Interventions
Not listed
Lead sponsor
Akron Children's Hospital
Other
Eligibility
Not listed
Enrollment
130 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008
U.S. locations
1
States / cities
Akron, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 8, 2011 · Synced Sep 15, 2026, 1:57 AM EDT
Not listed Phase 2 Interventional Accepts healthy volunteers

NAC for Attenuation of COVID-19 Symptomatology

NCT05074121
View directory record Official record
Conditions
Covid19, COVID-19 Pneumonia, COVID-19 Respiratory Infection, COVID-19 Lower Respiratory Infection, SARS-CoV2 Infection, SARS-CoV-2 Acute Respiratory Disease, SARS-Associated Coronavirus as Cause of Disease Classified Elsewhere, Oxidative Stress
Interventions
N-acetylcysteine, Placebo
Drug · Other
Lead sponsor
Cambridge Health Alliance
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Everett, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 6, 2023 · Synced Sep 15, 2026, 1:57 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Efficacy of N-Acetylcysteine (NAC) in Preventing COVID-19 From Progressing to Severe Disease

NCT04419025
View directory record Official record
Conditions
COVID, Sars-CoV2, SARS-Associated Coronavirus as Cause of Disease Classified Elsewhere, Oxidative Stress
Interventions
N-acetylcysteine
Drug
Lead sponsor
Cambridge Health Alliance
Other
Eligibility
18 Years and older
Enrollment
165 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
4
States / cities
Cambridge, Massachusetts • Everett, Massachusetts • Somerville, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 27, 2021 · Synced Sep 15, 2026, 1:57 AM EDT
Terminated Phase 1 Interventional

Study of Neoadjuvant Chemotherapy With Nanoparticle Albumin Bound Paclitaxel, Doxorubicin and Cyclophosphamide (NAC) in Patients With Stages II-III Breast Cancer

NCT01090128
View directory record Official record
Conditions
Stages II-III Breast Cancer
Interventions
Nanoparticle Albumin Bound Paclitaxel, doxorubicin, cyclophosphamide
Drug
Lead sponsor
University of Utah
Other
Eligibility
18 Years and older · Female only
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2017
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Mar 30, 2017 · Synced Sep 15, 2026, 1:57 AM EDT
Completed No phase listed Observational

Treatment of APAP Toxicity With IV and Oral NAC 2008-2011

NCT01465542
View directory record Official record
Conditions
Acetaminophen Toxicity
Interventions
Not listed
Lead sponsor
Akron Children's Hospital
Other
Eligibility
1 Month to 21 Years
Enrollment
47 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
1
States / cities
Akron, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 24, 2023 · Synced Sep 15, 2026, 1:57 AM EDT
Completed Early Phase 1 Interventional

Functional Magnetic Resonance Imaging of N-acetylcysteine in Cocaine Dependence

NCT02994875
View directory record Official record
Conditions
Cocaine Dependence
Interventions
N-acetylcysteine, Placebo
Dietary Supplement · Other
Lead sponsor
Yale University
Other
Eligibility
18 Years to 65 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Oct 4, 2020 · Synced Sep 15, 2026, 1:57 AM EDT
Completed Phase 2 Interventional Results available

N-acetylcysteine Treatment of Alcohol Use Disorder In Veterans With TBI

NCT02791945
View directory record Official record
Conditions
Traumatic Brain Injury (TBI), Hazardous and Harmful Alcohol Use
Interventions
Medical Management Counseling, N-acetylcysteine, Placebo
Behavioral · Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated May 10, 2021 · Synced Sep 15, 2026, 1:57 AM EDT