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Showing 1–24 of 243 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: N-Acetylcysteine Clear all
Active, not recruiting Phase 1 Interventional

A Study of N-Acetylcysteine (N-AC) in People Receiving CAR T-cell Therapy for Lymphoma

NCT05081479
View directory record Official record
Conditions
Lymphoma
Interventions
N-Acetylcysteine
Drug
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
7
States / cities
Basking Ridge, New Jersey • Middletown, New Jersey • Montvale, New Jersey + 4 more
Source: ClinicalTrials.gov public record
Updated Nov 3, 2025 · Synced Sep 1, 2026, 2:19 PM EDT
Completed Phase 2 Interventional Results available

N-Acetyl Cysteine in Pathologic Skin Picking

NCT01063348
View directory record Official record
Conditions
Pathologic Skin Picking, Neurotic Excoriation, Psychogenic Excoriation, Dermatillomania
Interventions
N-Acetyl Cysteine, Placebo
Drug
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 64 Years
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 22, 2023 · Synced Sep 1, 2026, 2:19 PM EDT
Completed Phase 2 Interventional Results available

Prospective Analysis of the Use of N-Acetylcysteine and Vitamins in the Treatment of TBI in Geriatric Patients

NCT04291066
View directory record Official record
Conditions
Traumatic Brain Injury
Interventions
N-Acetyl cysteine
Drug
Lead sponsor
HonorHealth Research Institute
Other
Eligibility
60 Years to 100 Years
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
2
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Apr 30, 2026 · Synced Sep 1, 2026, 2:19 PM EDT
Completed Phase 2 Interventional

N-Acetylcysteine and Smoking Reduction

NCT00751257
View directory record Official record
Conditions
Nicotine Dependence
Interventions
N-acetylcysteine, Placebo
Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 65 Years
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Mar 22, 2017 · Synced Sep 1, 2026, 2:19 PM EDT
Not listed Not applicable Interventional

Effect of an Amino-Acid-Based Blend on Human Growth Hormone (hGH) and Fibromyalgia (FM) Symptoms

NCT04510181
View directory record Official record
Conditions
Fibromyalgia
Interventions
amino acid-based blend
Dietary Supplement
Lead sponsor
Pekarovics, Susan, MD
Other
Eligibility
18 Years to 80 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Aug 11, 2020 · Synced Sep 1, 2026, 2:19 PM EDT
Suspended Not applicable Interventional Accepts healthy volunteers

Insulin Resistance Study

NCT00614757
View directory record Official record
Conditions
Insulin Resistance, Metabolic Syndrome x
Interventions
N-acetylcysteine 20% 4ml, N-acetylcysteine 20% in 4 ml
Drug
Lead sponsor
Midwest Biomedical Research
Other
Eligibility
18 Years and older
Enrollment
121 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2013
U.S. locations
1
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 25, 2012 · Synced Sep 1, 2026, 2:19 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 23, 2012 · Synced Sep 1, 2026, 2:19 PM 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 1, 2026, 2:19 PM 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 1, 2026, 2:19 PM 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 13, 2018 · Synced Sep 1, 2026, 2:19 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Clinical Trial for Alcohol Use Disorder and Post Traumatic Stress Disorder (PTSD)

NCT02966873
View directory record Official record
Conditions
Post Traumatic Stress Disorder (PTSD), Addiction, Alcohol Abuse
Interventions
N-Acetylcysteine (NAC) Treatment, Cognitive Behavioral Therapy (CBT), Inactive Placebo Oral Capsule, Functional magnetic resonance imaging (fMRI), Proton magnetic resonance spectroscopy (MRS) Imaging
Drug · Behavioral · Other
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 70 Years
Enrollment
182 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2022
U.S. locations
2
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Apr 12, 2026 · Synced Sep 1, 2026, 2:19 PM EDT
Completed Phase 2Phase 3 Interventional Results available

N-Acetylcysteine for Youth Cannabis Use Disorder

NCT03055377
View directory record Official record
Conditions
Cannabis Use Disorder
Interventions
N-acetyl cysteine, Placebo oral capsule
Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
14 Years to 21 Years
Enrollment
192 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2024
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Dec 16, 2024 · Synced Sep 1, 2026, 2:19 PM EDT
Completed Phase 2 Interventional Results available

An Open-Label Study of N-Acetyl Cysteine in Children With Autism

NCT00676195
View directory record Official record
Conditions
Autistic Disorder
Interventions
N-Acetyl Cysteine
Drug
Lead sponsor
Stanford University
Other
Eligibility
3 Years to 12 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Mar 28, 2017 · Synced Sep 1, 2026, 2:19 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 3, 2019 · Synced Sep 1, 2026, 2:19 PM EDT
Terminated Phase 3 Interventional Results available

Acetaminophen in aSAH to Inhibit Lipid Peroxidation and Cerebral Vasospasm

NCT00585559
View directory record Official record
Conditions
Aneurysmal Subarachnoid Hemorrhage, Cerebral Vasospasm
Interventions
Placebos for acetaminophen and N-acetylcysteine, APAP 1 gm every 6 hours and N-acetylcysteine placebo, NAC IV infusion at 0.5 gm hourly and APAP placebo, APAP 1 gm q6 hours, plus NAC IV infusion at 0.5 gm hourly, APAP 1.5 gm q6 hours, plus NAC IV infusion at 0.5 gm hourly
Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
20 Years and older
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2023
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 17, 2025 · Synced Sep 1, 2026, 2:19 PM EDT
Completed Phase 2 Interventional Results available

Signatures of N-Ac for Non-Suicidal Self-Injury in Adolescents

NCT04005053
View directory record Official record
Conditions
Self-Harm, Depression, Suicide
Interventions
N-acetyl cysteine, Placebo oral tablet
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
16 Years to 24 Years · Female only
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 14, 2023 · Synced Sep 1, 2026, 2:19 PM 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 6, 2023 · Synced Sep 1, 2026, 2:19 PM 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 1, 2013 · Synced Sep 1, 2026, 2:19 PM 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 19, 2026 · Synced Sep 1, 2026, 2:19 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 8, 2013 · Synced Sep 1, 2026, 2:19 PM 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 4, 2021 · Synced Sep 1, 2026, 2:19 PM 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 16, 2026 · Synced Sep 1, 2026, 2:19 PM EDT
Completed Phase 1 Interventional

Pilot Study of Anti-oxidant Supplementation With N-Acetyl Cysteine in Stage 0/I Breast Cancer

NCT01878695
View directory record Official record
Conditions
Stage 0/1 Breast Cancer, Post Biopsy, Pre-surgery
Interventions
IV/oral n-acetylcysteine
Drug
Lead sponsor
Sidney Kimmel Comprehensive Cancer Center at Thomas Jefferson University
Other
Eligibility
18 Years and older · Female only
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 1, 2025 · Synced Sep 1, 2026, 2:19 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 20, 2017 · Synced Sep 1, 2026, 2:19 PM EDT