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ClinicalTrials.gov public records Last synced Oct 8, 2026, 7:14 AM EDT

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Showing 49–72 of 198 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: DHA (Docosahexaenoic Acid) Clear all
Completed Phase 3 Interventional Results available

Effects of Vitamin D and Fish Oil on the Kidney in Hypertensives

NCT02757872
View directory record Official record
Conditions
Hypertension, Kidney Diseases
Interventions
Vitamin D3, Omega-3 Fatty acids, Vitamin D3 placebo, Fish oil placebo
Dietary Supplement · Drug
Lead sponsor
Albert Einstein College of Medicine
Other
Eligibility
50 Years to 99 Years
Enrollment
2,232 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2022
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 31, 2024 · Synced Oct 8, 2026, 7:14 AM EDT
Not listed Phase 3 Interventional Accepts healthy volunteers

Effects of Vitamin D and Omega-3 Supplementation on Telomeres in VITAL

NCT04386577
View directory record Official record
Conditions
Aging
Interventions
Vitamin D3 (cholecalciferol), fish oil
Dietary Supplement · Drug
Lead sponsor
Augusta University
Other
Eligibility
50 Years and older
Enrollment
1,054 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2021
U.S. locations
1
States / cities
Augusta, Georgia
Source: ClinicalTrials.gov public record
Updated May 13, 2020 · Synced Oct 8, 2026, 7:14 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Corneal Nerves Function and Structure

NCT04222660
View directory record Official record
Conditions
Diabetic Peripheral Neuropathy
Interventions
Blackmores Omega Daily (4 1g capsules per day)
Dietary Supplement
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
50 Years to 75 Years
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated May 23, 2025 · Synced Oct 8, 2026, 7:14 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers Results available

LungVITamin D and OmegA-3 Trial (lungVITAL)

NCT01728571
View directory record Official record
Conditions
COPD, Asthma, Pulmonary Function, Pneumonia
Interventions
Vitamin D3, fish oil, Vitamin D3 placebo, Fish oil placebo
Dietary Supplement
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
50 Years and older
Enrollment
25,871 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 7, 2026 · Synced Oct 8, 2026, 7:14 AM EDT
Completed Phase 2 Interventional Results available

Fish Oil Supplementation, Nutrigenomics and Colorectal Cancer Prevention

NCT01661764
View directory record Official record
Conditions
Colorectal Adenomatous Polyps
Interventions
Eicosapentanoic acid and docosahexanoic acid, Oleic Acid
Drug
Lead sponsor
Vanderbilt University
Other
Eligibility
40 Years to 79 Years
Enrollment
141 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jun 8, 2018 · Synced Oct 8, 2026, 7:14 AM EDT
Completed Phase 2 Interventional

Omega-3 Fatty Acid Administration in Dialysis Patients

NCT00655525
View directory record Official record
Conditions
End Stage Renal Disease
Interventions
fish oil, placebo
Dietary Supplement
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years and older
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 23, 2014 · Synced Oct 8, 2026, 7:14 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Prenatal DHA and Neurofunctional Development

NCT02709239
View directory record Official record
Conditions
Use and Dose of Prenatal DHA Supplementation
Interventions
DHA 200mg, DHA 800mg
Dietary Supplement
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years and older · Female only
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2021
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Oct 19, 2021 · Synced Oct 8, 2026, 7:14 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Omega-3-fatty Acids on Age-related Macular

NCT01258335
View directory record Official record
Conditions
Aged Macular Degeneration
Interventions
Omega 3, Olive Oil
Dietary Supplement · Other
Lead sponsor
Mid Atlantic Retina
Other
Eligibility
20 Years to 49 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2010
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 22, 2011 · Synced Oct 8, 2026, 7:14 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Interaction of Epanova on Warfarin Pharmacokinetic and Anticoagulant Activity and Comparison of the Effects of Epanova and Lovaza on Eicosapentaenoic Acid (EPA) and Docosahexaenoic Acid (DHA) After Low-fat Meals

NCT01431690
View directory record Official record
Conditions
Hypertriglyceridemia
Interventions
warfarin, omefas, omega-3-acid ethyl esters
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 55 Years
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Tempe, Arizona
Source: ClinicalTrials.gov public record
Updated Apr 24, 2015 · Synced Oct 8, 2026, 7:14 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of Study Products Containing Varying Quantities of Docosahexaenoic Acid (DHA)

NCT01174134
View directory record Official record
Conditions
Levels of DHA in the Blood
Interventions
Nutritional beverage
Other
Lead sponsor
Mead Johnson Nutrition
Industry
Eligibility
18 Months to 36 Months
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2006
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Sep 2, 2011 · Synced Oct 8, 2026, 7:14 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Hallelujah Acres Omega 3 Fat Study

NCT01517685
View directory record Official record
Conditions
Omega 3 Fat Status
Interventions
Organic flax seed oil, fish oil
Dietary Supplement
Lead sponsor
Hallelujah Acres
Other
Eligibility
18 Years and older
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
1
States / cities
Zillah, Washington
Source: ClinicalTrials.gov public record
Updated Feb 19, 2016 · Synced Oct 8, 2026, 7:14 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Bioavailability of EPA and DHA From Two Dietary Supplements

NCT01908374
View directory record Official record
Conditions
Hypertriglyceridemia
Interventions
DHA-rich fish oil versus Phospholipid-rich fish oil
Dietary Supplement
Lead sponsor
Arctic Nutrition AS
Industry
Eligibility
18 Years to 59 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
Addison, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 25, 2013 · Synced Oct 8, 2026, 7:14 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of VisionPure™ on Indices of Vision Health and Cognitive Function

NCT05533658
View directory record Official record
Conditions
Eye Health, Vision, Cognitive Function
Interventions
VisionPure Dietary Supplement, Placebo
Dietary Supplement
Lead sponsor
Applied Science & Performance Institute
Industry
Eligibility
18 Years to 40 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
3
States / cities
Lutz, Florida • Tampa, Florida
Source: ClinicalTrials.gov public record
Updated May 26, 2023 · Synced Oct 8, 2026, 7:14 AM EDT
Active, not recruiting Phase 3 Interventional Accepts healthy volunteers

VITAL Rhythm Study

NCT02178410
View directory record Official record
Conditions
Cardiovascular Disease
Interventions
Vitamin D3, Omega-3 fatty acids (fish oil), Fish oil placebo, Vitamin D3 placebo
Dietary Supplement · Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
50 Years and older
Enrollment
25,119 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 7, 2025 · Synced Oct 8, 2026, 7:14 AM 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 8, 2026, 7:14 AM EDT
Completed Not applicable Interventional

Evaluation of MF4637 for Correcting the Omega-3 Nutritional Deficiency in NAFLD Patients

NCT02923804
View directory record Official record
Conditions
Non Alcoholic Fatty Liver
Interventions
Omega-3, Olive oil
Dietary Supplement
Lead sponsor
Pronova BioPharma
Industry
Eligibility
18 Years and older
Enrollment
172 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
7
States / cities
Hialeah, Florida • Lake Worth, Florida • Lauderdale Lakes, Florida + 3 more
Source: ClinicalTrials.gov public record
Updated Apr 4, 2018 · Synced Oct 8, 2026, 7:14 AM EDT
Not listed Not applicable Interventional

Diabetic Retinopathy Functional Evaluation Study: Monitoring Carotenoid Vitamins Treatment Using ERG

NCT04117022
View directory record Official record
Conditions
Diabetes, Diabetic Retinopathy
Interventions
DVS supplementation
Dietary Supplement
Lead sponsor
ZeaVision, LLC
Industry
Eligibility
21 Years to 80 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
2
States / cities
Pomona, California • Tahlequah, Oklahoma
Source: ClinicalTrials.gov public record
Updated Apr 23, 2021 · Synced Oct 8, 2026, 7:14 AM EDT
Completed Phase 2 Interventional Results available

COVID-19 Anosmia Study

NCT04495816
View directory record Official record
Conditions
Anosmia, Covid19
Interventions
Omega-3 Fatty Acid Supplement, Placebo/Control
Drug
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older
Enrollment
139 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 23, 2023 · Synced Oct 8, 2026, 7:14 AM 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 8, 2026, 7:14 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Vitamin D and Omega-3 Hypertension Trial (VITAL Hypertension)

NCT01653678
View directory record Official record
Conditions
Hypertension
Interventions
Vitamin D-3 (cholecalciferol), 2000 IU, Omega-3 fatty acids (fish oil), Vitamin D placebo, Fish oil placebo
Dietary Supplement · Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
50 Years to 99 Years
Enrollment
25,875 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 18, 2025 · Synced Oct 8, 2026, 7:14 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

MsFLASH-02: Interventions for Relief of Menopausal Symptoms: A 3-by-2 Factorial Design Examining Yoga, Exercise, and Omega-3 Supplementation

NCT01178892
View directory record Official record
Conditions
Hot Flashes, Menopause, Vasomotor Symptoms
Interventions
Placebo, Omega-3, Yoga, Exercise, Usual Activity
Dietary Supplement · Behavioral
Lead sponsor
Fred Hutchinson Cancer Center
Other
Eligibility
40 Years to 62 Years · Female only
Enrollment
355 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
3
States / cities
Oakland, California • Indianapolis, Indiana • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Aug 22, 2014 · Synced Oct 8, 2026, 7:14 AM EDT
Completed Not applicable Interventional

Combining HIIT and n-3 PUFA to Reduce Inflammation and Improve Metabolic Health

NCT05295719
View directory record Official record
Conditions
Obesity, Inflammation, Human Microbiome, Insulin Resistance, Dyslipidemias
Interventions
Omega-3 polyunsaturated fatty acid, High-Intensity Interval Training, Safflower oil, Low-intensity training
Dietary Supplement · Behavioral
Lead sponsor
Texas Tech University
Other
Eligibility
18 Years to 65 Years
Enrollment
129 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Lubbock, Texas
Source: ClinicalTrials.gov public record
Updated Sep 11, 2025 · Synced Oct 8, 2026, 7:14 AM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers Results available

Feasibility Pilot Clinical Trial of Omega-3 Supplement vs. Placebo for Post Covid-19 Recovery Among Health Care Workers

NCT05121766
View directory record Official record
Conditions
COVID-19
Interventions
Omega-3 (EPA+DHA), Placebo
Drug
Lead sponsor
Hackensack Meridian Health
Other
Eligibility
18 Years to 89 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Edison, New Jersey
Source: ClinicalTrials.gov public record
Updated Sep 19, 2024 · Synced Oct 8, 2026, 7:14 AM EDT
Completed Phase 2Phase 3 Interventional

Omega-3 Fatty Acid Deficiency Replacement in Early Schizophrenia

NCT00585390
View directory record Official record
Conditions
Schizophrenia, Fatty Acid Deficiency
Interventions
Omega-3 Fatty Acids, Olive oil placebo, EPA fish oil concentrate; DHA fish oil concentrate, Placebo
Dietary Supplement · Other · Drug
Lead sponsor
University of Cincinnati
Other
Eligibility
8 Years to 25 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 2, 2011 · Synced Oct 8, 2026, 7:14 AM EDT