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ClinicalTrials.gov public records Last synced Oct 27, 2026, 5:27 AM EDT

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Showing 1–24 of 248 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: acetylcysteine Clear all
Completed Phase 1 Interventional Accepts healthy volunteers

An Open-Label Study of N-Acetyl Cysteine in Pathological Gambling

NCT00273702
View directory record Official record
Conditions
Pathological Gambling
Interventions
N-Acetyl Cysteine
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 65 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 30, 2007 · Synced Oct 27, 2026, 5:27 AM EDT
Not yet recruiting Phase 2 Interventional

NAC-REPAIR for Post-surgical Pain

NCT07227649
View directory record Official record
Conditions
Carpal Tunnel Surgery, Trigger Finger Disorder, De Quervain Syndrome, Guyon's Canal, Dupuytren Contracture, Morton Neuroma, Tarsal Tunnel Syndrome, Plantar Fasciopathy, Peroneal Nerve Entrapment
Interventions
NAC, NAC 0mg/day (Placebo)
Drug
Lead sponsor
University of Arizona
Other
Eligibility
18 Years to 75 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Jul 17, 2026 · Synced Oct 27, 2026, 5:27 AM EDT
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 Oct 27, 2026, 5:27 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 19, 2022 · Synced Oct 27, 2026, 5:27 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

The Effect of N-Acetyl Cysteine on Cortical Erosion in Early Stage Schizophrenia

NCT01339858
View directory record Official record
Conditions
Schizophrenia, Psychotic Disorder NOS, Schizoaffective Disorder, Schizophreniform
Interventions
N-Acetyl Cysteine, sugar pill
Drug · Other
Lead sponsor
Indiana University
Other
Eligibility
16 Years to 35 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2015
U.S. locations
2
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated May 8, 2019 · Synced Oct 27, 2026, 5:27 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Oral N-acetylcysteine for Protection of Human Nevi Against UV-induced Oxidative Stress/Damage in Vivo

NCT01612221
View directory record Official record
Conditions
Patients at Risk for Melanoma
Interventions
N-acetylcysteine, Placebo arm
Drug · Other
Lead sponsor
University of Utah
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jul 31, 2017 · Synced Oct 27, 2026, 5:27 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Use of NAC in Prevention of Hangover Symptoms; Independent Alcohol Consumption Protocol

NCT03104959
View directory record Official record
Conditions
Prevention of Hangover Using N-Acety Cysteine
Interventions
N-acetyl cysteine, placebo
Dietary Supplement · Other
Lead sponsor
St. Luke's Hospital and Health Network, Pennsylvania
Other
Eligibility
21 Years and older
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Bethlehem, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 11, 2018 · Synced Oct 27, 2026, 5:27 AM EDT
Recruiting Phase 4 Interventional

Reducing Perioperative Oxidative Stress to Prevent Postoperative Chronic Pain Following Total Knee Arthroplasty

NCT06083480
View directory record Official record
Conditions
Osteoarthritis, Knee, Total Knee Arthroplasty, Chronic Postsurgical Pain
Interventions
GlyNAC (combination of glycine and n-acetylcysteine), Placebo
Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
50 Years and older
Enrollment
148 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Dec 11, 2025 · Synced Oct 27, 2026, 5:27 AM EDT
Recruiting Phase 2 Interventional

Efficacy of Rifaximin With NAC in IBS-D

NCT06727422
View directory record Official record
Conditions
IBS (Irritable Bowel Syndrome), IBS-D (Diarrhea-predominant)
Interventions
rifaximin 66mg + N-acetylcysteine 560mg three times daily, RNIB21 containing rifaximin 132mg + N-acetylcysteine 560mg three times daily, Placebo
Drug
Lead sponsor
Mark Pimentel, MD
Other
Eligibility
18 Years and older
Enrollment
225 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 20, 2026 · Synced Oct 27, 2026, 5:27 AM EDT
Completed Not applicable Interventional Results available

A Pilot Trial of Acute N-Acetylcysteine Effects on Working Memory and Other Cognitive Functions in Schizophrenia

NCT01232790
View directory record Official record
Conditions
Schizophrenia
Interventions
N-Acetylcysteine, Placebo
Dietary Supplement · Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 60 Years
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Dec 1, 2015 · Synced Oct 27, 2026, 5:27 AM 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 Oct 27, 2026, 5:27 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

N-Acetylcysteine for Neuroprotection in Parkinson's Disease

NCT01470027
View directory record Official record
Conditions
Parkinson Disease
Interventions
N-acetylcysteine, Placebo
Drug
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
50 Years to 75 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 28, 2018 · Synced Oct 27, 2026, 5:27 AM EDT
Active, not recruiting Phase 2 Interventional

A Study of N-acetylcysteine in Patients With COVID-19 Infection

NCT04374461
View directory record Official record
Conditions
Covid-19
Interventions
N-acetylcysteine, Peripheral Blood
Drug · Other
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 1, 2026 · Synced Oct 27, 2026, 5:27 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 2, 2015 · Synced Oct 27, 2026, 5:27 AM EDT
Completed Phase 3 Interventional Results available

Prevention of Serious Adverse Events Following Angiography

NCT01467466
View directory record Official record
Conditions
Acute Renal Failure, Kidney Disease, Coronary Artery Disease
Interventions
IV isotonic saline, IV isotonic bicarbonate, N-acetylcysteine, Placebo
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
5,177 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
35
States / cities
Tucson, Arizona • Little Rock, Arkansas • Palo Alto, California + 32 more
Source: ClinicalTrials.gov public record
Updated Nov 5, 2025 · Synced Oct 27, 2026, 5:27 AM EDT
Completed Phase 4 Interventional Results available

N-Acetylcysteine for Smoking Cessation in Tobacco and Cannabis Co-Use

NCT04627922
View directory record Official record
Conditions
Cannabis Use, Tobacco Use Disorder, Drug Use Disorder
Interventions
N-Acetyl cysteine, Placebo comparator, Cognitive behavioral therapy (CBT)
Drug · Other · Behavioral
Lead sponsor
Ellen Herbst
Other
Eligibility
18 Years and older
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Aug 11, 2026 · Synced Oct 27, 2026, 5:27 AM EDT
Terminated Early Phase 1 Interventional Accepts healthy volunteers

The Role of S-nitrosohemoglobin in Regulating Systemic Blood Flow During Hypoxia and Normoxia

NCT01905696
View directory record Official record
Conditions
Focus is Determination of the Role of SNO-Hb in Forearm Blood Flow Regulation
Interventions
Oral N-acetylcysteine
Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years to 40 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Dec 29, 2016 · Synced Oct 27, 2026, 5:27 AM EDT
Completed Phase 1 Interventional

NAC to Prevent Cisplatin-induced Hearing Loss

NCT02094625
View directory record Official record
Conditions
Neuroectodermal Tumors, Primitive, Liver Neoplasms, Osteosarcoma, Other Childhood Cancers Using Cisplatin-based Regimens
Interventions
N-Acetylcysteine
Drug
Lead sponsor
Children's Hospital Los Angeles
Other
Eligibility
1 Year to 21 Years
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 18, 2023 · Synced Oct 27, 2026, 5:27 AM EDT
Completed Not applicable Interventional

Use of Mucomyst to Ameliorate Oxidant Stress in Diabetics With Proteinuria

NCT00493727
View directory record Official record
Conditions
Diabetes, Proteinuria
Interventions
N-acetylcysteine(Mucomyst)
Drug
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
18 Years to 80 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
1
States / cities
Dayton, Ohio
Source: ClinicalTrials.gov public record
Updated May 19, 2008 · Synced Oct 27, 2026, 5:27 AM EDT
Completed Phase 2 Interventional Results available

NAC Phase IIB: A Multi-Center, Phase IIB, Randomized, Placebo-controlled, Double-Blind Study Of The Effects Of N-Acetylcysteine On Redox Changes and Lung Inflammation In Cystic Fibrosis Patients

NCT00809094
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
N-acetylcysteine (NAC), Placebo
Drug
Lead sponsor
Stanford University
Other
Eligibility
7 Years and older
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
11
States / cities
Birmingham, Alabama • Stanford, California • Denver, Colorado + 8 more
Source: ClinicalTrials.gov public record
Updated Apr 22, 2013 · Synced Oct 27, 2026, 5:27 AM 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 Oct 27, 2026, 5:27 AM 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 Oct 27, 2026, 5:27 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers Results available

n-Acetylcysteine and Cocaine

NCT02141620
View directory record Official record
Conditions
Cocaine Abuse, Cocaine Dependence
Interventions
Cocaine, n-Acetylcysteine, Placebo
Drug
Lead sponsor
University of Kentucky
Other
Eligibility
18 Years to 55 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Jan 4, 2017 · Synced Oct 27, 2026, 5:27 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

A Prospective, Randomized TrialComparing Oral N-Acetylcysteine and Intravenous Sodium Bicarbonate

NCT00579995
View directory record Official record
Conditions
Nephropathy
Interventions
Oral N-Acetylcysteine, Sodium Bicarbonate
Drug
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years and older
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2010
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Sep 21, 2023 · Synced Oct 27, 2026, 5:27 AM EDT