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Showing 1–24 of 304 matching trials from the live ClinicalTrials.gov search.
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Completed Phase 3 Interventional Results available

Use of N-Acetylcysteine (NAC) in Fingernail Biting

NCT01993849
View directory record Official record
Conditions
Onychophagia
Interventions
N-Acetylcysteine (NAC), Placebo
Drug · Other
Lead sponsor
Kevin Gray, MD
Other
Eligibility
18 Years to 30 Years
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Oct 2, 2018 · Synced Sep 2, 2026, 9:39 AM EDT
Completed Phase 2 Interventional Results available

A Trial of N-Acetylcysteine (an Over-the-Counter Medicine) in Adolescents Who Smoke Marijuana

NCT01005810
View directory record Official record
Conditions
Cannabis Dependence
Interventions
N-Acetylcysteine, placebo, Contingency Management
Drug · Behavioral
Lead sponsor
Medical University of South Carolina
Other
Eligibility
13 Years to 21 Years
Enrollment
116 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Nov 20, 2018 · Synced Sep 2, 2026, 9:39 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 26, 2021 · Synced Sep 2, 2026, 9:39 AM EDT
Completed Not applicable Interventional Results available

Mucinex® for Treatment of Filamentary Keratitis

NCT02859246
View directory record Official record
Conditions
Filamentary Keratitis
Interventions
Mucinex®
Drug
Lead sponsor
Massachusetts Eye and Ear Infirmary
Other
Eligibility
18 Years to 80 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 18, 2020 · Synced Sep 2, 2026, 9:39 AM 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 7, 2015 · Synced Sep 2, 2026, 9:39 AM EDT
Completed Phase 2 Interventional Results available

Cockroach Immunotherapy in Children and Adolescents

NCT03541187
View directory record Official record
Conditions
Persistent Asthma
Interventions
German cockroach allergenic extract, Placebo for German cockroach allergenic extract
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
8 Years to 17 Years
Enrollment
82 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
11
States / cities
Aurora, Colorado • Washington D.C., District of Columbia • Chicago, Illinois + 7 more
Source: ClinicalTrials.gov public record
Updated May 21, 2023 · Synced Sep 2, 2026, 9:39 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 13, 2018 · Synced Sep 2, 2026, 9:39 AM EDT
Recruiting Phase 1 Interventional

A Study of an Alternative Treatment Approach (Preoperative Radiotherapy, Then Mastectomy, Then Immediate Reconstruction Surgery) in People With T4 Breast Cancer

NCT05412225
View directory record Official record
Conditions
Breast Cancer, Invasive Breast Cancer
Interventions
Pre-neoadjuvant radiotherapy (NART) biopsy, Neoadjuvant radiotherapy, Unilateral total mastectomy with axillary lymph node dissection
Diagnostic Test · Radiation · Procedure
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older · Female only
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
7
States / cities
Basking Ridge, New Jersey • Middletown, New Jersey • Montvale, New Jersey + 4 more
Source: ClinicalTrials.gov public record
Updated Jul 23, 2026 · Synced Sep 2, 2026, 9:39 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 2, 2026, 9:39 AM EDT
Completed Not applicable Interventional

Acute Renal Failure Post Liver Transplantation

NCT01907061
View directory record Official record
Conditions
Acute Renal Failure
Interventions
N-acetylcysteine, Placebo
Drug
Lead sponsor
Baylor Research Institute
Other
Eligibility
18 Years to 71 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2014
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Feb 20, 2020 · Synced Sep 2, 2026, 9:39 AM EDT
Terminated Phase 2Phase 3 Interventional Results available

A Clinical Trial for CTD-ILD Treatment

NCT01424033
View directory record Official record
Conditions
Interstitial Lung Disease, Connective Tissue Disease
Interventions
N-Acetylcysteine
Drug
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2011
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Apr 5, 2017 · Synced Sep 2, 2026, 9:39 AM EDT
Completed Phase 1 Interventional

A Phase I Study of ABT 510 for Newly Diagnosed Glioblastoma Multiforme

NCT00584883
View directory record Official record
Conditions
Brain Tumor
Interventions
ABT 510
Drug
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
19 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2008
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Jun 6, 2023 · Synced Sep 2, 2026, 9:39 AM EDT
Completed Phase 2 Interventional Results available

N-Acetylcysteine to Prevent Radiocontrast Nephropathy in Emergency Department Patients

NCT00780962
View directory record Official record
Conditions
Radiocontrast Nephropathy
Interventions
N-Acetylcysteine (NAC), 0.9% Sodium-chloride
Drug
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years to 120 Years
Enrollment
399 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 28, 2024 · Synced Sep 2, 2026, 9:39 AM EDT
Completed Phase 3 Interventional

Randomized Study of Acetylcysteine in Patients With Acute Liver Failure Not Caused by Acetaminophen

NCT00004467
View directory record Official record
Conditions
Acute Liver Failure
Interventions
N-acetylcysteine (NAC), Placebo
Drug
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years to 70 Years
Enrollment
173 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1998 – 2006
U.S. locations
25
States / cities
Birmingham, Alabama • Scottsdale, Arizona • Los Angeles, California + 19 more
Source: ClinicalTrials.gov public record
Updated Oct 12, 2017 · Synced Sep 2, 2026, 9:39 AM EDT
Recruiting Phase 1Phase 2 Interventional

An Optimal Dose Finding Study of N-Acetylcysteine in Patients With Myeloproliferative Neoplasms

NCT05123365
View directory record Official record
Conditions
Myeloproliferative Neoplasm, MPN, Essential Thrombocythemia, Polycythemia Vera, Myelofibrosis
Interventions
N-Acetylcysteine
Drug
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years and older
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
2
States / cities
Irvine, California • Orange, California
Source: ClinicalTrials.gov public record
Updated Mar 9, 2026 · Synced Sep 2, 2026, 9:39 AM EDT
Completed Phase 4 Interventional Results available

A Clinical Trial Via Telepsychiatry of Treatments for the Management of Emotional Dysregulation in Youth

NCT03911414
View directory record Official record
Conditions
Mood Disturbance, Mood Disorders, Natural Supplements, Alternative Treatment
Interventions
Open-label Treatment with Omega-3 Fatty Acids + Inositol, Open-label Treatment with N-acetylcysteine
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
5 Years to 17 Years
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 17, 2026 · Synced Sep 2, 2026, 9:39 AM EDT
Active, not recruiting Phase 1 Interventional

FIGHT-RP 1 Extension Study

NCT03999021
View directory record Official record
Conditions
Retinitis Pigmentosa
Interventions
NAC effervescent tablets
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2030
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 6, 2026 · Synced Sep 2, 2026, 9:39 AM EDT
Completed Phase 3 Interventional

Prospective Treatment Efficacy in IPF Using Genotype for Nac Selection (PRECISIONS) Trial

NCT04300920
View directory record Official record
Conditions
Idiopathic Pulmonary Fibrosis
Interventions
N-acetyl cysteine, Placebo
Drug
Lead sponsor
Fernando J Martinez
Other
Eligibility
40 Years and older
Enrollment
202 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
25
States / cities
Tucson, Arizona • Los Angeles, California • Stanford, California + 22 more
Source: ClinicalTrials.gov public record
Updated Mar 19, 2026 · Synced Sep 2, 2026, 9:39 AM EDT
Completed Phase 4 Interventional Results available

Treatment of Acute Sinusitis

NCT00377403
View directory record Official record
Conditions
Acute Respiratory Infections, Acute Rhinosinusitis
Interventions
Acetaminophen, Amoxicillin, Dextromethorphan hydrobromide with guaifenesin, Guaifenesin, Pseudoephedrine Sustained Action, Saline spray (0.65%)
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 70 Years
Enrollment
172 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2010
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 27, 2012 · Synced Sep 2, 2026, 9:39 AM EDT
Active, not recruiting Early Phase 1 Interventional

DCE-MRI and MBI in Assessing Tumor Response to Chemotherapy in Patients With Triple Negative Breast Cancer

NCT02744053
View directory record Official record
Conditions
Estrogen Receptor Negative, HER2/Neu Negative, Progesterone Receptor Negative, Triple-Negative Breast Carcinoma
Interventions
Dynamic Contrast-Enhanced Magnetic Resonance Imaging, Laboratory Biomarker Analysis, Scintimammography, Technetium Tc-99m Sestamibi
Procedure · Other · Radiation + 1 more
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older · Female only
Enrollment
96 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2028
U.S. locations
6
States / cities
Houston, Texas • Nassau Bay, Texas • Sugar Land, Texas + 1 more
Source: ClinicalTrials.gov public record
Updated Apr 20, 2026 · Synced Sep 2, 2026, 9:39 AM EDT
Recruiting No phase listed Observational

Increasing Pre-Surgical Identification of Muscle Invasive Tumor Evaluations Prior to Planned Cystectomy (INSITE)

NCT06396533
View directory record Official record
Conditions
Urothelial Carcinoma, Muscle Invasive Bladder Urothelial Carcinoma, Non-Muscle Invasive Bladder Urothelial Carcinoma
Interventions
Not listed
Lead sponsor
Fox Chase Cancer Center
Other
Eligibility
18 Years and older
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
2
States / cities
Omaha, Nebraska • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 30, 2025 · Synced Sep 2, 2026, 9:39 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 2, 2026, 9:39 AM EDT
Not listed Not applicable Interventional

Magseed Enabled Long-Term Localization of Axillary Lymph Nodes

NCT03796559
View directory record Official record
Conditions
Breast Cancer, Axillary Lymph Nodes
Interventions
Magseed Marker
Device
Lead sponsor
Endomagnetics Ltd.
Industry
Eligibility
18 Years and older
Enrollment
65 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
2
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Sep 18, 2024 · Synced Sep 2, 2026, 9:39 AM EDT
Completed Phase 3 Interventional Results available

Achieving Cannabis Cessation-Evaluating N-Acetylcysteine Treatment

NCT01675661
View directory record Official record
Conditions
Cannabis Dependence
Interventions
N-Acetylcysteine, Placebo
Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 50 Years
Enrollment
302 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
6
States / cities
Los Angeles, California • New Haven, Connecticut • Lexington, Kentucky + 3 more
Source: ClinicalTrials.gov public record
Updated May 23, 2018 · Synced Sep 2, 2026, 9:39 AM EDT