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ClinicalTrials.gov public records Last synced Nov 15, 2026, 7:20 AM EST

All trial information on this site comes from the official ClinicalTrials.gov public API (clinicaltrials.gov/api/v2), run by the U.S. National Library of Medicine. We only display that public information; we do not add opinions, endorsements, or any other intent. Always review the official ClinicalTrials.gov record for the latest information.

Showing 409–432 of 494 matching trials from the live ClinicalTrials.gov search.

Filters: Intervention: Fish OIl Clear all

Conditions: Type 2 Diabetes
Interventions: Vitamin D3, Omega-3 fatty acid (fish oil), Vitamin D3 placebo, Fish oil placebo; Dietary Supplement · Drug
Lead sponsor: Brigham and Women's Hospital; Other
Eligibility: 50 Years and older
Enrollment: 22,220 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2011 – 2024
U.S. locations: 1
States / cities: Boston, Massachusetts

Conditions: Peripheral Arterial Disease
Interventions: Pro-Omega, Pro-Omega Placebo; Dietary Supplement · Other
Lead sponsor: University of California, San Francisco; Other
Eligibility: 40 Years to 90 Years
Enrollment: 8 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2014 – 2017
U.S. locations: 1
States / cities: San Francisco, California

Conditions: Refractive Error
Interventions: Omega-3 Fatty Acid Supplements; Dietary Supplement
Lead sponsor: University of California, San Diego; Other
Eligibility: 18 Years to 28 Years
Enrollment: 17 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2010 – 2011
U.S. locations: 1
States / cities: La Jolla, California

Conditions: Respiratory Distress Syndrome, Adult, Acute Lung Injury, Acute Respiratory Distress Syndrome
Interventions: Fish oil (eicosapentaenoic acid and docosahexanoic acid); Drug
Lead sponsor: University of Washington; Other
Eligibility: 18 Years and older
Enrollment: 90 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2006 – 2009
U.S. locations: 4
States / cities: Boise, Idaho • Portland, Oregon • Burlington, Vermont + 1 more

Conditions: Breastcancer
Interventions: Omega-3 FFA; Dietary Supplement
Lead sponsor: The University of Texas Health Science Center at San Antonio; Other
Eligibility: 18 Years to 99 Years
Enrollment: 21 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2017 – 2021
U.S. locations: 1
States / cities: San Antonio, Texas

Conditions: High Triglycerides, Hypercholesterolemia, Schizophrenia, Schizoaffective Disorder, Bipolar Disorder
Interventions: Lovaza; Drug
Lead sponsor: Massachusetts General Hospital; Other
Eligibility: 18 Years to 75 Years
Enrollment: 65 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2009 – 2013
U.S. locations: 1
States / cities: Boston, Massachusetts

Conditions: Diabetes Mellitus, Non-Insulin-Dependent
Interventions: insulin glargine (HOE901), omega-3 polyunsaturated fatty acids (PUFA), placebo, reusable pen device for insulin injection; Drug · Device
Lead sponsor: Sanofi; Industry
Eligibility: 50 Years and older
Enrollment: 12,537 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2003 – 2011
U.S. locations: 1
States / cities: Bridgewater, New Jersey

Conditions: Major Depressive Disorder
Interventions: Low Dose Fish Oil, High Dose Fish Oil; Drug
Lead sponsor: University of Cincinnati; Other
Eligibility: 12 Years to 18 Years
Enrollment: 20 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2007 – 2011
U.S. locations: 1
States / cities: Cincinnati, Ohio

Conditions: Inflammation, Dyslipidemia
Interventions: Fish oil, Krill oil; Dietary Supplement
Lead sponsor: Tufts University; Other
Eligibility: 50 Years to 75 Years
Enrollment: 2 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2015 – 2016
U.S. locations: 1
States / cities: Boston, Massachusetts

Conditions: Disturbances in Initiating and Maintaining Sleep, Behavior Problem
Interventions: Omega-3 fatty acids, Placebo; Dietary Supplement
Lead sponsor: University of Pennsylvania; Other
Eligibility: 5 Years to 9 Years
Enrollment: 29 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2018 – 2019
U.S. locations: 1
States / cities: Philadelphia, Pennsylvania

Conditions: Bone Density, Body Composition, Bone Health
Interventions: Vitamin D3 placebo, Fish oil placebo, omega-3 fatty acids (fish oil), Vitamin D3; Dietary Supplement
Lead sponsor: Brigham and Women's Hospital; Other
Eligibility: 50 Years and older
Enrollment: 771 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2012 – 2023
U.S. locations: 1
States / cities: Boston, Massachusetts

Conditions: Nutrition, Health, Dietary Habits
Interventions: Diet A, Diet B, Diet C; Other
Lead sponsor: RTI International; Other
Eligibility: 18 Years and older
Enrollment: 8,000 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2023 – 2027
U.S. locations: 14
States / cities: Birmingham, Alabama • Davis, California • Los Angeles, California + 7 more

Conditions: Insulin Resistance
Interventions: Omega-3, placebo; Drug
Lead sponsor: Mayo Clinic; Other
Eligibility: 18 Years to 65 Years
Enrollment: 31 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2012 – 2015
U.S. locations: 1
States / cities: Rochester, Minnesota

Conditions: Age-related Macular Degeneration, Cataract
Interventions: Lutein/zeaxanthin, DHA/EPA, Lutein/zeaxanthin and DHA/EPA; Dietary Supplement · Drug
Lead sponsor: National Eye Institute (NEI); NIH
Eligibility: 50 Years to 85 Years
Enrollment: 4,203 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2006 – 2012
U.S. locations: 91
States / cities: Birmingham, Alabama • Little Rock, Arkansas • Beverly Hills, California + 72 more

Conditions: Prostate Cancer
Interventions: lycopene supplement, fish oil supplement, Placebo; Dietary Supplement · Other
Lead sponsor: University of California, San Francisco; Other
Eligibility: Male only
Enrollment: 84 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2003 – 2008
U.S. locations: 1
States / cities: San Francisco, California

Conditions: Cholestasis, Short Bowel Syndrome
Interventions: Omegaven; Drug
Lead sponsor: Children's Hospital of Philadelphia; Other
Eligibility: Up to 21 Years
Healthy volunteers: Healthy volunteers not accepted
U.S. locations: 1
States / cities: Philadelphia, Pennsylvania

Conditions: Coronary Artery Disease, Inflammatory Response, Atherosclerosis
Interventions: eicosapentaenoic acid (EPA),; Dietary Supplement
Lead sponsor: The Cleveland Clinic; Other
Eligibility: 19 Years and older
Enrollment: 53 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2005 – 2007
U.S. locations: 1
States / cities: Willoughby Hills, Ohio

Conditions: Retinitis Pigmentosa
Interventions: Vitamin A, Docosahexaenoic acid, Control fatty acid; Dietary Supplement
Lead sponsor: Carol Weigel DiFranco; NIH
Eligibility: 18 Years to 55 Years
Enrollment: 221 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 1996 – 2002
U.S. locations: 1
States / cities: Boston, Massachusetts

Conditions: Chronic Daily Headache
Interventions: Diet A, Diet B; Other
Lead sponsor: University of North Carolina, Chapel Hill; Other
Eligibility: 18 Years and older
Enrollment: 67 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2009 – 2011
U.S. locations: 1
States / cities: Chapel Hill, North Carolina

Conditions: Depression, Depression, Postpartum
Interventions: Omega-3 Fatty Acids (EPA plus DHA), Supportive psychotherapy, Placebo; Drug · Behavioral
Lead sponsor: University of Arizona; Other
Eligibility: 18 Years to 45 Years · Female only
Enrollment: 50 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2004 – 2006
U.S. locations: 1
States / cities: Tucson, Arizona

Conditions: Barrett's Esophagus, Obesity
Interventions: Omega-3 polyunsaturated fatty acids, Placebo; Drug
Lead sponsor: Mayo Clinic; Other
Eligibility: 18 Years to 85 Years
Enrollment: 60 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2012 – 2018
U.S. locations: 1
States / cities: Rochester, Minnesota

Conditions: Chronic Obstructive Pulmonary Disease
Interventions: Capsule + Powder supplementation, stable tracer infusion; Dietary Supplement · Other
Lead sponsor: Texas A&M University; Other
Eligibility: 45 Years to 100 Years
Enrollment: 54 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2018 – 2020
U.S. locations: 1
States / cities: College Station, Texas

Conditions: Prostate Cancer
Interventions: omega-3 fatty acids, biopsy; Dietary Supplement · Procedure
Lead sponsor: Dana-Farber Cancer Institute; Other
Eligibility: 18 Years to 120 Years · Male only
Enrollment: 232 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2003 – 2012
U.S. locations: 2
States / cities: Boston, Massachusetts

Conditions: Obesity, Hypertriglyceridemia, Insulin Resistance, Hypertension
Interventions: Fish Oil, Flaxseed Oil, Placebo; Dietary Supplement
Lead sponsor: Stanford University; Other
Eligibility: 18 Years and older
Enrollment: 102 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2007 – 2008
U.S. locations: 1
States / cities: Stanford, California

Search by objective public record fields.

Study of Vitamin D and Omega-3 Supplementation for Preventing Diabetes

The Use of Fish Oil to Reduce Inflammation Caused by a Peripheral Vascular Intervention

Epithelial Healing and Visual Outcomes Using Omega-3 Therapy Before and After Photorefractive Keratectomy (PRK) Surgery

A Phase II Randomized Trial of Fish Oil in Patients With Acute Lung Injury (ALI)

Breast, Omega 3 Free Fatty Acid, Ph 0

Omega-3 Fatty Acids (Lovaza) for Second Generation Antipsychotic-Associated Hypertriglyceridemia

The ORIGIN Trial (Outcome Reduction With Initial Glargine Intervention)

Omega-3 Fatty Acids as Adjunct Treatment for Major Depressive Disorder

Study Comparing Fish Oil and Krill Oil

Effect of Omega-3 Fatty Acids on Sleep and Behavior (Pilot Study)

VITamin D and OmegA-3 TriaL: Effects on Bone Structure and Architecture (VITAL)

Nutrition for Precision Health, Powered by the All of Us

Omega-3 Fatty Acids and Insulin Sensitivity

Age-Related Eye Disease Study 2 (AREDS2)

Lycopene or Omega-3 Fatty Acid Nutritional Supplements in Treating Patients With Stage I or Stage II Prostate Cancer

Compassionate Use of Omegaven for Pediatric Patients With Parenteral Nutrition Associated Liver Disease

Trial to Study the Effects of Supplementary Omega-3 on Serum C-Reactive Protein Levels

Randomized Trial of DHA for Retinitis Pigmentosa Patients Receiving Vitamin A

Nutrition for Chronic Daily Headache

Use of Omega-3 Fatty Acids for Perinatal Depression

Modulation of Esophageal Inflammation in Barrett's Esophagus by Omega-3 Fatty Acids

Fish Oil and HMB Supplementation in COPD

Polyunsaturated Fatty Acids in Treating Patients With Prostate Cancer Undergoing Prostate Biopsy and/or Surgery

Effects of Omega-3 Fatty Acids on Markers of Inflammation