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ClinicalTrials.gov public records Last synced Sep 30, 2026, 6:55 AM EDT

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Showing 25–48 of 228 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: N acetyl cysteine Clear all
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 Sep 30, 2026, 6:55 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Use of NAC in Alleviation of Hangover Symptoms

NCT02541422
View directory record Official record
Conditions
Hangover Symptoms, NAC
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
62 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
1
States / cities
Bethlehem, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 30, 2018 · Synced Sep 30, 2026, 6:55 AM EDT
Completed Phase 4 Interventional

Treatment of Cognitive and Negative Symptoms in Schizophrenia With N-acetylcysteine

NCT02505477
View directory record Official record
Conditions
Schizophrenia, Cognitive Deficits, Schizophrenia; Negative Type
Interventions
N-acetylcysteine, Treatment as Usual
Drug · Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 65 Years
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2023
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated May 15, 2023 · Synced Sep 30, 2026, 6:55 AM EDT
Terminated Phase 1Phase 2 Interventional Results available

Pilot Study of a Multi-Drug Regimen for Severe Pulmonary Fibrosis in Hermansky-Pudlak Syndrome

NCT00467831
View directory record Official record
Conditions
Hermansky-Pudlak Syndrome (HPS), Pulmonary Fibrosis, Oculocutaneous Albinism, Platelet Storage Pool Deficiency, Metabolic Disease
Interventions
Losartan, Zileuton, N-Acetylcysteine, Pravastatin, Erythromycin
Drug
Lead sponsor
National Human Genome Research Institute (NHGRI)
NIH
Eligibility
18 Years to 70 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2012
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 2, 2013 · Synced Sep 30, 2026, 6:55 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 Sep 30, 2026, 6:55 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 5, 2020 · Synced Sep 30, 2026, 6:55 AM 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, 6:55 AM EDT
Terminated Early Phase 1 Interventional

Glutathione, Oxidative Stress and Mitochondrial Function in COVID-19

NCT04703036
View directory record Official record
Conditions
Covid19
Interventions
Glycine, N-acetylcysteine, Alanine
Dietary Supplement
Lead sponsor
Baylor College of Medicine
Other
Eligibility
55 Years to 85 Years
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 26, 2024 · Synced Sep 30, 2026, 6:55 AM EDT
Recruiting Phase 1Phase 2 Interventional

Effect of NAC on Preventing Chemo-Related Cognitive Impairments in Ovarian Ca Pts Treated W/ PBT

NCT04520139
View directory record Official record
Conditions
Ovarian Cancer, Cognitive Impairment
Interventions
N-Acetyl-Cysteine, Placebo
Drug · Other
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years and older · Female only
Enrollment
102 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Orange, California
Source: ClinicalTrials.gov public record
Updated Jul 17, 2026 · Synced Sep 30, 2026, 6:55 AM EDT
Not listed Not applicable Interventional

N-acetylcysteine in the Treatment of Depressive Symptoms in Bipolar Offspring

NCT02865629
View directory record Official record
Conditions
Depression
Interventions
N-acetyl cysteine
Drug
Lead sponsor
University of Cincinnati
Other
Eligibility
15 Years to 24 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated May 14, 2018 · Synced Sep 30, 2026, 6:55 AM EDT
Completed Early Phase 1 Interventional

Brain Imaging to Understand the Role of Inflammation in N-Acetyl Cysteine (NAC) Treatment of Bipolar Depression

NCT03730064
View directory record Official record
Conditions
Bipolar Disorder, Depression
Interventions
N-acetyl cysteine (NAC)
Drug
Lead sponsor
Martin Lan
Other
Eligibility
18 Years to 60 Years
Enrollment
3 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 5, 2021 · Synced Sep 30, 2026, 6:55 AM 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, 6:55 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 Jun 1, 2020 · Synced Sep 30, 2026, 6:55 AM EDT
Completed Phase 1 Interventional

Open Label Study: Treatment of ALS Fatigue With PolyMVA

NCT04557410
View directory record Official record
Conditions
Amyotrophic Lateral Sclerosis
Interventions
PolyMVA
Drug
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
Not listed
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated May 27, 2021 · Synced Sep 30, 2026, 6:55 AM EDT
Terminated Phase 1 Interventional Results available

Trial of Famotidine & N-Acetyl Cysteine for Outpatients With COVID-19

NCT04545008
View directory record Official record
Conditions
Covid19
Interventions
Famotidine, N-Acetyl cysteine
Drug
Lead sponsor
Prisma Health-Upstate
Other
Eligibility
18 Years and older
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
3
States / cities
Easley, South Carolina • Greenville, South Carolina • Greer, South Carolina
Source: ClinicalTrials.gov public record
Updated Feb 18, 2022 · Synced Sep 30, 2026, 6:55 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 7, 2023 · Synced Sep 30, 2026, 6:55 AM EDT
Completed Phase 2 Interventional Results available

Repeated-Dose Oral N-acetylcysteine for the Treatment of Parkinson's Disease

NCT02212678
View directory record Official record
Conditions
Parkinson Disease
Interventions
N-acetylcysteine capsule
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated May 16, 2019 · Synced Sep 30, 2026, 6:55 AM 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, 6:55 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Glutamate-Glutamine Cycling (VCYC) During Cocaine Abstinence Using 1H-MRS

NCT02124941
View directory record Official record
Conditions
Cocaine Dependence, Healthy
Interventions
N-acetyl cysteine, [18F]FDG PET scan, 1H MRS, [11C]APP311 PET scan
Drug · Diagnostic Test
Lead sponsor
Yale University
Other
Eligibility
18 Years to 55 Years
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2022
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jul 7, 2023 · Synced Sep 30, 2026, 6:55 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 Sep 30, 2026, 6:55 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Neurocircuit Strategy to Decrease Cocaine Cue Reactivity

NCT04155632
View directory record Official record
Conditions
Cocaine-Related Disorders
Interventions
N-acetylcysteine, Theta-burst stimulation (TBS)
Drug · Device
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 65 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Sep 24, 2025 · Synced Sep 30, 2026, 6:55 AM EDT
Terminated Phase 2 Interventional Results available

Effect of Acetylcysteine With Topotecan Hydrochloride on the Tumor Microenvironment in Patients With Persistent or Recurrent High Grade Ovarian, Primary Peritoneal, or Fallopian Tube Cancer

NCT02569957
View directory record Official record
Conditions
Malignant Ovarian Endometrioid Tumor, Malignant Ovarian Serous Tumor, Recurrent Fallopian Tube Carcinoma, Recurrent Ovarian Carcinoma, Recurrent Primary Peritoneal Carcinoma
Interventions
Topotecan Hydrochloride, Acetylcysteine
Drug
Lead sponsor
Sidney Kimmel Comprehensive Cancer Center at Thomas Jefferson University
Other
Eligibility
18 Years and older · Female only
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 4, 2025 · Synced Sep 30, 2026, 6:55 AM EDT
Terminated Phase 2 Interventional

A Study to Evaluate OP-101 (Dendrimer N-acetyl-cysteine) in Severe Coronavirus Disease 2019 (COVID-19) Patients

NCT04458298
View directory record Official record
Conditions
COVID-19
Interventions
OP-101, Placebo
Drug
Lead sponsor
Ashvattha Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
8
States / cities
Loma Linda, California • Fort Lauderdale, Florida • Jacksonville, Florida + 5 more
Source: ClinicalTrials.gov public record
Updated Feb 13, 2023 · Synced Sep 30, 2026, 6:55 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 Sep 30, 2026, 6:55 AM EDT