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ClinicalTrials.gov public records Last synced Oct 2, 2026, 2:29 AM EDT

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Showing 25–48 of 52 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: N-acetylcysteine capsule Clear all
Completed Phase 1 Interventional

Nutrition, Neuromuscular Electrical Stimulation (NMES) and Secondary Progressive Multiple Sclerosis (SPMS)

NCT01381354
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Progressive exercise, Neuromuscular electrical stimulation delivered using the electrical therapy device EMPI 300 PV, Modified paleolithic diet, Omega 3 fatty acids, Full Spectrum vitamin, Essential - hydroxytyrosol, Maltodextrin fiber supplement, Mineral boost (magnesium), Niacinamide, Methyl B12, Taurine, creatine, thiamine, riboflavin, N acetylcysteine, alpha lipoic acid, L acetyl carnitine, methyl folate, coenzyme Q, meditation, self massage, learning, Coconut oil
Other · Device · Dietary Supplement + 1 more
Lead sponsor
University of Iowa
Other
Eligibility
18 Years to 65 Years
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2016
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Jun 26, 2018 · Synced Oct 2, 2026, 2:29 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Antioxidant Treatment of Type 2 Diabetes

NCT00609102
View directory record Official record
Conditions
Type 2 Diabetes
Interventions
Placebo, n-aceylcysteine
Drug
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years to 70 Years
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2013
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Dec 24, 2014 · Synced Oct 2, 2026, 2:29 AM EDT
Completed Phase 2 Interventional Results available

N-Acetylcysteine for Adolescent Alcohol Use Disorder

NCT03707951
View directory record Official record
Conditions
Alcohol Use Disorder
Interventions
N-acetylcysteine, Placebo oral capsule
Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
13 Years to 25 Years
Enrollment
126 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Jan 8, 2025 · Synced Oct 2, 2026, 2:29 AM EDT
Recruiting Phase 3 Interventional

Prefrontal Glutamatergic Modulation by NAC and MBCT for Depression in Youth

NCT07464886
View directory record Official record
Conditions
Mild Depression
Interventions
N-acetylcysteine, Mindfulness-based cognitive therapy, Placebo, Sham mindfulness-based intervention
Drug · Behavioral
Lead sponsor
University of Cincinnati
Other
Eligibility
15 Years to 24 Years
Enrollment
160 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 11, 2026 · Synced Oct 2, 2026, 2:29 AM EDT
Terminated Phase 2 Interventional Results available

N-Acetylcysteine in Adjunct to DBT for the Treatment of Self-Injurious Behavior in BPD

NCT00539188
View directory record Official record
Conditions
Borderline Personality Disorder, Self-Injurious Behavior
Interventions
N-Acetylcysteine, placebo
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 65 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 15, 2020 · Synced Oct 2, 2026, 2:29 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 2, 2026, 2:29 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Early Study of N-Acetylcysteine to Treat Deliberate Self-Harm in Adolescents

NCT01111734
View directory record Official record
Conditions
Deliberate Self Harm
Interventions
N-Acetylcysteine, fMRI
Dietary Supplement · Drug
Lead sponsor
University of Minnesota
Other
Eligibility
13 Years to 21 Years
Enrollment
67 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2015
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated May 1, 2019 · Synced Oct 2, 2026, 2:29 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 18, 2026 · Synced Oct 2, 2026, 2:29 AM EDT
Not listed Not applicable Interventional

Supplemental Adjuvants for Intracellular Nutrition and Treatment

NCT00893724
View directory record Official record
Conditions
Neovascular Age-related Macular Degeneration, Diabetic Macular Edema
Interventions
Neutral pills with no medicinal effect, Inosine; Tocopherols, Tocotrienol, CoQ10 combination capsule; Niacinamide SR; Viatmin C; N-acetyl Cysteine; Complete Multivitamin with all minerals, Inosine; Tocopherol, Tocotrienol, CoQ10 combination capsule; Niacinamide; Vitamin C; N-acetyl Cysteine; Complete Multivitamin with all minerals; Minocycline
Drug · Dietary Supplement
Lead sponsor
Mid-Atlantic Retina Consultations, Inc.
Other
Eligibility
Not listed
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Morgantown, West Virginia
Source: ClinicalTrials.gov public record
Updated Jul 20, 2011 · Synced Oct 2, 2026, 2:29 AM EDT
Active, not recruiting Phase 2 Interventional

FDOPA PET and Nutritional Support in Parkinson's Disease

NCT04459052
View directory record Official record
Conditions
Parkinson Disease, Idiopathic Parkinson Disease
Interventions
N acetyl cysteine, [F-18] Fluorodopa Positron Emission Tomography
Dietary Supplement · Drug
Lead sponsor
Thomas Jefferson University
Other
Eligibility
30 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2027
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 29, 2025 · Synced Oct 2, 2026, 2:29 AM EDT
Completed Not applicable Interventional Results available

Effect of Dietary Glycemic Index on Beta-cell Function

NCT01386645
View directory record Official record
Conditions
Impaired Glucose Tolerance, Oxidative Stress, Prediabetes, Impaired Fasting Glucose
Interventions
low glycemic index (LGI) diet, high glycemic index (HGI) diet plus placebo (PLAC), high glycemic index diet plus N-acetylcysteine
Other · Drug
Lead sponsor
Seattle Institute for Biomedical and Clinical Research
Other
Eligibility
18 Years to 65 Years
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2019
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Aug 12, 2020 · Synced Oct 2, 2026, 2:29 AM EDT
Completed Phase 1 Interventional Results available

Hypertrophic Regression With N-Acetylcysteine in HCM

NCT01537926
View directory record Official record
Conditions
Hypertrophic Cardiomyopathy
Interventions
N-acetylcysteine, Placebo
Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years and older
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Nov 2, 2021 · Synced Oct 2, 2026, 2:29 AM EDT
Withdrawn Early Phase 1 Interventional

The Role of Glutathione Deficiency and MSIDS Variables in Long COVID-19

NCT05371288
View directory record Official record
Conditions
COVID-19
Interventions
NAC (N-acetyl cysteine), Alpha lipoic acid (ALA), liposomal glutathione (GSH)
Drug
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
1
States / cities
Orange, California
Source: ClinicalTrials.gov public record
Updated Nov 5, 2024 · Synced Oct 2, 2026, 2:29 AM 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 24, 2012 · Synced Oct 2, 2026, 2:29 AM 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 17, 2024 · Synced Oct 2, 2026, 2:29 AM EDT
Completed Phase 1 Interventional

N-acetylcysteine (NAC) for Improving Cognitive Dysfunction in Schizophrenia

NCT01885338
View directory record Official record
Conditions
Schizophrenia
Interventions
N-acetylcysteine (NAC), Inactive placebo capsule
Drug
Lead sponsor
VA Greater Los Angeles Healthcare System
Federal
Eligibility
18 Years to 65 Years
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jun 4, 2015 · Synced Oct 2, 2026, 2:29 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Pharmacokinetic Profile of N-Acetyl Cysteine

NCT06252519
View directory record Official record
Conditions
Pharmacokinetics
Interventions
NAC, Neuro-NAC, Neuro-NAC XS
Dietary Supplement
Lead sponsor
University of Memphis
Other
Eligibility
18 Years to 45 Years
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Dec 16, 2024 · Synced Oct 2, 2026, 2:29 AM EDT
Completed Phase 2 Interventional Results available

N-Acetylcysteine for Pediatric Trichotillomania

NCT00993265
View directory record Official record
Conditions
Trichotillomania, Hair Pulling
Interventions
N-Acetylcysteine, Placebo
Drug
Lead sponsor
Yale University
Other
Eligibility
8 Years to 17 Years
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2014
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jul 25, 2014 · Synced Oct 2, 2026, 2:29 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 14, 2017 · Synced Oct 2, 2026, 2:29 AM EDT
Active, not recruiting Not applicable Interventional

Obstructive Sleep Apnea (OSA) and Sex-Specific Responses to N-acetylcysteine (NAC)

NCT06311045
View directory record Official record
Conditions
Obstructive Sleep Apnea
Interventions
N-acetylcysteine (NAC), Placebo, Positive Airway Pressure (PAP) Therapy
Dietary Supplement · Procedure
Lead sponsor
NYU Langone Health
Other
Eligibility
55 Years to 75 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 24, 2026 · Synced Oct 2, 2026, 2:29 AM EDT
Completed Phase 1Phase 2 Interventional

Fatty Liver Disease in Obese Children

NCT02117700
View directory record Official record
Conditions
Obesity, Nonalcoholic Fatty Liver Disease, Cardiovascular Disease
Interventions
N-acetyl cysteine 600 mg once/day, N-acetyl cysteine 600mg twice/day, Placebo twice/day
Dietary Supplement · Other
Lead sponsor
Nemours Children's Clinic
Other
Eligibility
7 Years to 18 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Oct 17, 2022 · Synced Oct 2, 2026, 2:29 AM EDT
Completed Phase 4 Interventional Results available

Natural Treatments for the Management of Emotional Dysregulation in Youth With Non-verbal Learning Disability (NVLD) and/or Autism Spectrum Disorders (ASD)

NCT03757585
View directory record Official record
Conditions
Non-verbal Learning Disorder, Autism Spectrum Disorder, Autism
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
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 5, 2025 · Synced Oct 2, 2026, 2:29 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 2, 2026, 2:29 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Neuroscience-Informed Treatment Development for Adolescent Alcohol Use

NCT03238300
View directory record Official record
Conditions
Alcohol Drinking, Control
Interventions
N-Acetylcysteine, Placebo Oral Capsule
Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
15 Years to 19 Years
Enrollment
57 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2022
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Jun 22, 2023 · Synced Oct 2, 2026, 2:29 AM EDT