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Showing 1–24 of 492 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Fish Oil Clear all
Not listed Phase 4 Interventional Accepts healthy volunteers

Oral Nutrition Impact on Tear Film

NCT01561040
View directory record Official record
Conditions
Dry Eye Syndrome
Interventions
Omega 3, Vitamins A, D3 and E
Dietary Supplement
Lead sponsor
Eye and Vision Technologies and Research Institute
Network
Eligibility
18 Years to 79 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
4
States / cities
Conifer, Colorado • Oak Lawn, Illinois • Lexington, Kentucky + 1 more
Source: ClinicalTrials.gov public record
Updated Mar 25, 2012 · Synced Sep 2, 2026, 10:44 PM EDT
Terminated Phase 1 Interventional

Study of Fish Oil to Reduce ALT Levels in Adolescents

NCT00694746
View directory record Official record
Conditions
Non-alcoholic Fatty Liver Disease, Fatty Liver
Interventions
Omega-3-acid ethyl esters, Placebo
Drug
Lead sponsor
Boston University
Other
Eligibility
13 Years to 17 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2014
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 28, 2016 · Synced Sep 2, 2026, 10:44 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 6, 2022 · Synced Sep 2, 2026, 10:44 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Cardioprotective Effects of Omega-3 Fatty Acids Supplementation in Healthy Older Subjects Exposed to Air Pollution Particles

NCT01442480
View directory record Official record
Conditions
Healthy
Interventions
Fish oil, Olive oil
Dietary Supplement
Lead sponsor
Environmental Protection Agency (EPA)
Federal
Eligibility
50 Years to 75 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2016
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 7, 2025 · Synced Sep 2, 2026, 10:44 PM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers

The Effects of Sedentarism on Vascular Function, Inflammation, and Insulin Resistance

NCT01412216
View directory record Official record
Conditions
Endothelial Dysfunction, Insulin Resistance, Metabolic Syndrome, Peripheral Arterial Disease
Interventions
Fish Oil (Omega-3 Fatty Acids)
Dietary Supplement
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 50 Years
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Nov 6, 2013 · Synced Sep 2, 2026, 10:44 PM EDT
Not listed Not applicable Interventional

Omegaven® as Parenteral Nutrition

NCT02334293
View directory record Official record
Conditions
Cholestasis
Interventions
Omegaven
Drug
Lead sponsor
Carle Foundation Hospital
Other
Eligibility
14 Days to 4 Months
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2013
U.S. locations
1
States / cities
Urbana, Illinois
Source: ClinicalTrials.gov public record
Updated Jan 7, 2015 · Synced Sep 2, 2026, 10:44 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 9, 2014 · Synced Sep 2, 2026, 10:44 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Lipoic Acid and Omega-3 Fatty Acids for Cognitive Impairment in Multiple Sclerosis

NCT02133664
View directory record Official record
Conditions
Multiple Sclerosis, Cognition
Interventions
lipoic acid and omega-3 fatty acids, Placebo
Drug
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years to 65 Years
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Jun 1, 2017 · Synced Sep 2, 2026, 10:44 PM EDT
Completed Phase 3 Interventional Results available

Safety and Effectiveness of Omega 3-Fatty Acids, EPA Versus DHA, for the Treatment of Major Depression

NCT00361374
View directory record Official record
Conditions
Major Depressive Disorder
Interventions
eicosapentaenoic acid, docosahexaenoic acid, Placebo
Dietary Supplement · Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 80 Years
Enrollment
196 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2013
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 17, 2014 · Synced Sep 2, 2026, 10:44 PM EDT
Completed Phase 2Phase 3 Interventional Results available

Use of Omegaven for Treatment With Parenteral Nutrition Associated Liver Disease

NCT04697888
View directory record Official record
Conditions
Parenteral Nutrition-related Hepatitis
Interventions
Omegaven
Drug
Lead sponsor
Children's Mercy Hospital Kansas City
Other
Eligibility
Up to 17 Years
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
1
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Jun 10, 2021 · Synced Sep 2, 2026, 10:44 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

The Effects of High Dose Fish Oil Supplementation on Delayed Onset Muscle Soreness and Inflammatory Markers

NCT00805870
View directory record Official record
Conditions
Muscle Damage, Muscle Inflammation
Interventions
Lovaza (omega-3-acid ethyl esters), Wheat Germ Oil
Drug
Lead sponsor
Western Michigan University
Other
Eligibility
18 Years to 30 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Kalamazoo, Michigan
Source: ClinicalTrials.gov public record
Updated Sep 4, 2012 · Synced Sep 2, 2026, 10:44 PM EDT
Completed Phase 3 Interventional Results available

Effect of High Dose Fish Oil Supplementation After Recent Heart Attack Using Magnetic Resonance Imaging

NCT00729430
View directory record Official record
Conditions
Myocardial Infarction, Death, Sudden, Cardiac
Interventions
Omega-3 Fatty Acids (Fish Oil Supplements), Placebo
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
21 Years and older
Enrollment
358 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2014
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 31, 2017 · Synced Sep 2, 2026, 10:44 PM EDT
Withdrawn Phase 4 Interventional

Effects of Lovaza on High Density Lipoprotein (HDL) Composition and Function in Hypertriglyceridemia

NCT01180764
View directory record Official record
Conditions
Hypertriglyceridemia
Interventions
Lovaza (Omega-3 acid ethyl esters), Placebo
Drug
Lead sponsor
University of Utah
Other
Eligibility
35 Years to 75 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Feb 7, 2016 · Synced Sep 2, 2026, 10:44 PM EDT
Completed Phase 2 Interventional Results available

The ENRGISE (ENabling Reduction of Low-Grade Inflammation in SEniors) Pilot Study

NCT02676466
View directory record Official record
Conditions
Inflammation
Interventions
Omega-3 fish oil, Losartan, Corn Oil (Fish oil Placebo), Cellulose Based (Losartan Placebo)
Dietary Supplement · Drug · Other
Lead sponsor
University of Florida
Other
Eligibility
70 Years and older
Enrollment
289 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
5
States / cities
Gainesville, Florida • Chicago, Illinois • Boston, Massachusetts + 2 more
Source: ClinicalTrials.gov public record
Updated May 6, 2024 · Synced Sep 2, 2026, 10:44 PM EDT
Completed Not applicable Interventional

Novel Dietary Interventions for Treating Insulin Resistance

NCT02006394
View directory record Official record
Conditions
Insulin Resistance, Obesity, Metabolic Syndrome
Interventions
Fish Oil, Polyphenol Capsules, Corn Oil Capsules, Corn starch capsules, Reduced glycemic index bread products, Market variety bread products
Dietary Supplement · Other
Lead sponsor
University of California, San Diego
Other
Eligibility
21 Years to 55 Years
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Dec 11, 2013 · Synced Sep 2, 2026, 10:44 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Implementation of a Mediterranean Diet Program for Overweight or Obese Pregnant Women in a Low-resource Clinical Setting

NCT05868954
View directory record Official record
Conditions
Gestational Weight Gain, Diet, Healthy
Interventions
MedDiet Program, ACOG-based Dietary Program
Behavioral
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years and older · Female only
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Charlotte, North Carolina
Source: ClinicalTrials.gov public record
Updated Dec 7, 2025 · Synced Sep 2, 2026, 10:44 PM EDT
Completed Phase 1 Interventional

Cholestasis Prevention: Efficacy of IV Fish Oil

NCT00512629
View directory record Official record
Conditions
Cholestasis, Parenteral Nutrition
Interventions
Omegaven, Intralipid
Drug
Lead sponsor
Boston Children's Hospital
Other
Eligibility
Up to 3 Months
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 2, 2020 · Synced Sep 2, 2026, 10:44 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Complex Effects of Dietary Manipulation on Metabolic Function, Inflammation and Health

NCT02706262
View directory record Official record
Conditions
Obesity, Insulin Resistance
Interventions
Metabolically abnormal obese - Mediterranean diet, Metabolically abnormal obese - Low carbohydrate ketogenic diet, Metabolically abnormal obese - Plant-based, very-low-fat diet, Annual Follow-up Visits
Other · Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 55 Years
Enrollment
180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2027
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jan 26, 2026 · Synced Sep 2, 2026, 10:44 PM EDT
Completed Early Phase 1 Interventional

Docosahexaenoic Acid (DHA) To Prevent Development of Cognitive Dysfunction Due to Chemotherapy

NCT02517502
View directory record Official record
Conditions
Cognitive Dysfunction
Interventions
DHA, Placebo
Drug
Lead sponsor
Carol Fabian, MD
Other
Eligibility
18 Years to 65 Years · Female only
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
2
States / cities
Decatur, Illinois • Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Jan 23, 2022 · Synced Sep 2, 2026, 10:44 PM 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 10, 2025 · Synced Sep 2, 2026, 10:44 PM EDT
Not listed Phase 4 Interventional Accepts healthy volunteers

Lovaza Mechanisms of Action

NCT01301794
View directory record Official record
Conditions
Moderate Hypertriglyceridemia.
Interventions
Omega 3 fatty acid (Lovaza)
Dietary Supplement
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
21 Years to 65 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 24, 2013 · Synced Sep 2, 2026, 10:44 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Fatty Acid Regulation of Platelet Function in Diabetes

NCT02373332
View directory record Official record
Conditions
Thrombosis, Type 2 Diabetes Mellitus
Interventions
omega-3 and -6 fatty acids and their 12-LOX oxylipins
Other
Lead sponsor
University of Michigan
Other
Eligibility
21 Years to 70 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2019
U.S. locations
2
States / cities
Ann Arbor, Michigan • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 2, 2021 · Synced Sep 2, 2026, 10:44 PM EDT
Recruiting Not applicable Interventional

Ketogenic and Carnivore (Lion) Diets for Inflammatory Bowel Disease and Rheumatoid Arthritis

NCT07524244
View directory record Official record
Conditions
Rheumatoid Arthritis (RA), Crohn's Disease (CD), Ulcerative Colitis (UC)
Interventions
Ketogenic diet, Carnivore (Lion) Diet
Behavioral
Lead sponsor
Fuller Research Foundation
Other
Eligibility
18 Years to 64 Years
Enrollment
160 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Apr 15, 2026 · Synced Sep 2, 2026, 10:44 PM EDT
Active, not recruiting Not applicable Interventional

Evaluating the Influence of Diet-induced Weight Loss on Fat (Adipose) Tissue's Insulin Sensitivity and Testosterone Synthesis in Women With Overweight or Obesity, Insulin Resistance, and Hyperandrogenemia

NCT06998238
View directory record Official record
Conditions
Overweight and Obesity, Hyperandrogenemia, Insulin Resistance
Interventions
Mediterranean-based, carbohydrate restricted, calorie reduced diet
Behavioral
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
21 Years to 45 Years · Female only
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Mar 16, 2026 · Synced Sep 2, 2026, 10:44 PM EDT