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ClinicalTrials.gov public records Last synced Oct 13, 2026, 5:59 PM EDT

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Showing 145–168 of 334 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Omega-3 fatty acids (fish oil) Clear all
Terminated Not applicable Interventional Accepts healthy volunteers

Nutritional Supplementation in the Elderly With Weight Loss

NCT04350762
View directory record Official record
Conditions
Sarcopenia
Interventions
Protein shake + Fish Oil
Dietary Supplement
Lead sponsor
University of California, Los Angeles
Other
Eligibility
65 Years and older
Enrollment
4 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated May 6, 2023 · Synced Oct 13, 2026, 5:59 PM EDT
Completed Phase 2 Interventional Results available

Vitamin E and DHA-EE on NAFLD - Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Clinical Trial (PUVENAFLD)

NCT04198805
View directory record Official record
Conditions
Non-Alcoholic Fatty Liver Disease, Non-Alcoholic Fatty Liver, Non-Alcoholic Steatohepatitis
Interventions
Vitamin E [(all-rac)-α-tocopheryl acetate], Omega-3 fatty acid (DHA EE), Omega-3 fatty acid (DHA EE) & Vitamin E [(all-rac)-α-tocopheryl acetate], Placebo
Dietary Supplement · Combination Product · Other
Lead sponsor
Naga P. Chalasani
Other
Eligibility
18 Years and older
Enrollment
205 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
15
States / cities
Chandler, Arizona • Tucson, Arizona • North Little Rock, Arkansas + 10 more
Source: ClinicalTrials.gov public record
Updated May 25, 2023 · Synced Oct 13, 2026, 5:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Fish Oil Supplementation on Vocal Performance

NCT05141045
View directory record Official record
Conditions
Voice Range Profile, Reflux Symptom Index, Evaluation of Ability to Sing Easily, Body Composition
Interventions
omega-3 PUFA supplement, placebo
Dietary Supplement
Lead sponsor
Baylor University
Other
Eligibility
18 Years to 28 Years
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Waco, Texas
Source: ClinicalTrials.gov public record
Updated Dec 2, 2021 · Synced Oct 13, 2026, 5:59 PM 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 13, 2026, 5:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Change in Omega 3 Index in Healthy Adults With OmeGo or a Standard Omega-3 Oil Supplement

NCT06802068
View directory record Official record
Conditions
Supplementation in Healthy Adults to Assess Impact on Omega 3 Index and Cardiometabolic Health
Interventions
whole salmon oil, Cod liver oil
Dietary Supplement
Lead sponsor
Hofseth Biocare ASA
Industry
Eligibility
40 Years to 80 Years
Enrollment
96 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
2
States / cities
Menlo Park, California • San Francisco, California
Source: ClinicalTrials.gov public record
Updated Feb 23, 2026 · Synced Oct 13, 2026, 5:59 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

VITamin D and OmegA-3 TriaL: Effects on Mammographic Density and Breast Tissue

NCT02239874
View directory record Official record
Conditions
Benign Breast Disease
Interventions
Vitamin D and fish oil placebo, Fish oil and vitamin D placebo, Vitamin D placebo and fish oil placebo, Vitamin D and fish oil
Dietary Supplement
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
55 Years to 67 Years · Female only
Enrollment
3,894 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2023
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 7, 2022 · Synced Oct 13, 2026, 5:59 PM EDT
Completed Phase 3 Interventional Results available

DHA (Docosahexaenoic Acid), an Omega 3 Fatty Acid, in Slowing the Progression of Alzheimer's Disease

NCT00440050
View directory record Official record
Conditions
Alzheimer's Disease
Interventions
DHA (Docosahexaenoic Acid), Placebo
Drug
Lead sponsor
Alzheimer's Disease Cooperative Study (ADCS)
Other
Eligibility
50 Years and older
Enrollment
402 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
51
States / cities
Birmingham, Alabama • Phoenix, Arizona • Sun City, Arizona + 41 more
Source: ClinicalTrials.gov public record
Updated Sep 25, 2014 · Synced Oct 13, 2026, 5:59 PM EDT
Completed Phase 2 Interventional Results available

Omega-3 Fatty Acid in Treating Patients With Stage I-III Breast Cancer

NCT01869764
View directory record Official record
Conditions
Ductal Breast Carcinoma in Situ, Lobular Breast Carcinoma in Situ, Male Breast Cancer, Stage IA Breast Cancer, Stage IB Breast Cancer, Stage II Breast Cancer, Stage IIIA Breast Cancer, Stage IIIB Breast Cancer, Stage IIIC Breast Cancer
Interventions
omega-3 fatty acid, placebo, laboratory biomarker analysis
Drug · Other
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years and older
Enrollment
57 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 30, 2019 · Synced Oct 13, 2026, 5:59 PM EDT
Completed Phase 2 Interventional

Omega-3 Fatty Acids in Bipolar Disorder

NCT00010868
View directory record Official record
Conditions
Bipolar Disorder
Interventions
Omega-3 Fatty Acids
Drug
Lead sponsor
National Center for Complementary and Integrative Health (NCCIH)
NIH
Eligibility
18 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2004
U.S. locations
2
States / cities
Belmont, Massachusetts • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 18, 2006 · Synced Oct 13, 2026, 5:59 PM EDT
Completed Phase 4 Interventional Results available

Rituximab in Progressive Immunoglobulin A (IgA) Nephropathy

NCT00498368
View directory record Official record
Conditions
IgA Nephropathy
Interventions
Intravenous Rituximab, ACE/ARB, Omega-3 Fatty Acid Fish Oil Supplement
Drug · Dietary Supplement
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 70 Years
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2015
U.S. locations
5
States / cities
San Francisco, California • Rochester, Minnesota • New York, New York + 2 more
Source: ClinicalTrials.gov public record
Updated Feb 1, 2017 · Synced Oct 13, 2026, 5:59 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Academic Stress and Proinflammatory Cytokines: Omega-3 Intervention

NCT00519779
View directory record Official record
Conditions
Stress-related Changes in Inflammation
Interventions
omega-3 supplementation, Oral omega-3 fish oil placebo
Dietary Supplement
Lead sponsor
National Center for Complementary and Integrative Health (NCCIH)
NIH
Eligibility
18 Years to 40 Years
Enrollment
68 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2010
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 27, 2012 · Synced Oct 13, 2026, 5:59 PM EDT
Completed Phase 2Phase 3 Interventional Results available

Dry Eye Assessment and Management: Feasibility Study

NCT01102257
View directory record Official record
Conditions
Dry Eye Syndromes, Keratoconjunctivitis Sicca
Interventions
Omega-3 EFA Supplement, Olive Oil
Drug
Lead sponsor
Asbell, Penny, M.D.
Individual
Eligibility
18 Years to 90 Years
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 23, 2012 · Synced Oct 13, 2026, 5:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Fish Oil and Muscle Function

NCT01308957
View directory record Official record
Conditions
Sarcopenia
Interventions
Omega-3 fatty acids, corn oil
Dietary Supplement
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 85 Years
Enrollment
77 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 10, 2014 · Synced Oct 13, 2026, 5:59 PM EDT
Completed Early Phase 1 Interventional

Omega-3 Fatty Acids That Affect the Immune System in Kidney Transplant Patients

NCT00047983
View directory record Official record
Conditions
Kidney Diseases
Interventions
Canola oil, Arginine, Fish oil emulsion
Dietary Supplement
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
4 Years and older
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2004
U.S. locations
4
States / cities
Washington D.C., District of Columbia • Baltimore, Maryland • Durham, North Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Jan 11, 2017 · Synced Oct 13, 2026, 5:59 PM EDT
Completed Phase 1 Interventional Results available

NAPLS Omega-3 Fatty Acid Versus Placebo Study

NCT01429454
View directory record Official record
Conditions
Psychosis
Interventions
Omega-3 Long Chain Fatty Acid, Placebo
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
12 Years to 30 Years
Enrollment
127 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
8
States / cities
Los Angeles, California • San Diego, California • New Haven, Connecticut + 5 more
Source: ClinicalTrials.gov public record
Updated Feb 25, 2021 · Synced Oct 13, 2026, 5:59 PM EDT
Completed Phase 2 Interventional

Pilot Study - Effect of Omega-3 on Systemic Lupus Erythematosus

NCT02021513
View directory record Official record
Conditions
Systemic Lupus Erythematosus
Interventions
Fish Oil, Olive Oil
Dietary Supplement
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 64 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Dec 27, 2013 · Synced Oct 13, 2026, 5:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Fish Oil and Green Tea Extract in Preventing Prostate Cancer in Patients Who Are at Risk for Developing Prostate Cancer

NCT00253643
View directory record Official record
Conditions
Precancerous Condition, Prostate Cancer
Interventions
green tea catechin extract, fish oil, placebo
Dietary Supplement · Other
Lead sponsor
OHSU Knight Cancer Institute
Other
Eligibility
21 Years to 120 Years · Male only
Enrollment
89 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2013
U.S. locations
3
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Apr 18, 2017 · Synced Oct 13, 2026, 5:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Impact of Vitamin D Supplementation on Cardiac Structure and Function

NCT01630213
View directory record Official record
Conditions
Cardiovascular Disease
Interventions
Vitamin D3 + fish oil/fish oil placebo, Vitamin D3 placebo + fish oil/fish oil placebo
Dietary Supplement
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
50 Years and older
Enrollment
1,025 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 6, 2022 · Synced Oct 13, 2026, 5:59 PM EDT
Terminated Not applicable Interventional

Enhancing Facial Nerve Function With Omega-3 After Resection of Vestibular Schwannoma

NCT05116878
View directory record Official record
Conditions
Vestibular Schwannoma
Interventions
Omega-3, Placebo
Dietary Supplement
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 8, 2023 · Synced Oct 13, 2026, 5:59 PM EDT
Not listed Not applicable Interventional

Omega-3 Fatty Acids in Preventing Breast Cancer in Women at High Risk of Developing Breast Cancer

NCT00114296
View directory record Official record
Conditions
Breast Cancer
Interventions
omega-3 fatty acid
Dietary Supplement
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
18 Years and older · Female only
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2005
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Sep 17, 2013 · Synced Oct 13, 2026, 5:59 PM EDT
Completed Not applicable Interventional Results available

Vitamin D and Omega-3 Trial to Prevent and Treat Diabetic Kidney Disease

NCT01684722
View directory record Official record
Conditions
Diabetes
Interventions
Vitamin D, Omega-3 fatty acids (fish oil), Vitamin D placebo, Fish oil placebo
Dietary Supplement · Drug
Lead sponsor
University of Washington
Other
Eligibility
50 Years and older
Enrollment
1,312 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2019
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 21, 2022 · Synced Oct 13, 2026, 5:59 PM EDT
Completed Phase 1 Interventional

Effect of DHA Supplements on Macular Function in Patients With Stargardt Macular Dystrophy and Stargardt-like Macular Dystrophy

NCT00060749
View directory record Official record
Conditions
Macular Degeneration
Interventions
Docosahexaenoic Acid (DHA) Dietary Supplement
Drug
Lead sponsor
National Eye Institute (NEI)
NIH
Eligibility
Not listed
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2007
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 13, 2026, 5:59 PM EDT
Completed Phase 3 Interventional Results available

Effect of Omega-3 Fatty Acid on Cortical Function in ADHD

NCT01883817
View directory record Official record
Conditions
Attention Deficit Disorder
Interventions
DHA Omega-3, Placebo
Drug
Lead sponsor
University of Cincinnati
Other
Eligibility
5 Years to 15 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 16, 2022 · Synced Oct 13, 2026, 5:59 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Large Randomized Trial of Vitamin D, Omega-3 Fatty Acids and Cognitive Decline

NCT01669915
View directory record Official record
Conditions
Cognitive Decline
Interventions
vitamin D3, omega-3 fatty acids (fish oil), Vitamin D3 placebo, Fish oil placebo
Dietary Supplement · Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
60 Years to 92 Years
Enrollment
3,424 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 21, 2023 · Synced Oct 13, 2026, 5:59 PM EDT