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ClinicalTrials.gov public records Last synced Nov 13, 2026, 9:27 PM 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 1–24 of 256 matching trials from the live ClinicalTrials.gov search.

Filters: Intervention: Fish oil placebo Clear all

Conditions: Inflammation
Interventions: Omega 7 + 3, Omega 3, Placebo; Dietary Supplement
Lead sponsor: Appalachian State University; Other
Eligibility: 18 Years to 70 Years · Female only
Enrollment: 68 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2014
U.S. locations: 1
States / cities: Kannapolis, North Carolina

Conditions: Healthy Subject
Interventions: Dietary Fiber, Fish Oil, Comparator; Dietary Supplement · Other
Lead sponsor: Fred Hutchinson Cancer Center; Other
Eligibility: 50 Years to 75 Years
Enrollment: 38 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2021 – 2022
U.S. locations: 1
States / cities: Seattle, Washington

Conditions: Age-related Memory Disorders, Mood Disorders
Interventions: Omega-3 fatty acid, Blueberry powder, Placebo oil, Placebo powder; Dietary Supplement · Other
Lead sponsor: University of Cincinnati; Other
Eligibility: 62 Years to 80 Years
Enrollment: 94 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2010 – 2016
U.S. locations: 1
States / cities: Cincinnati, Ohio

Conditions: Type 1 Diabetes Mellitus
Interventions: DHA Treatment, Placebo for DHA; Dietary Supplement
Lead sponsor: National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK); NIH
Eligibility: Up to 5 Months
Enrollment: 99 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2006 – 2013
U.S. locations: 9
States / cities: Los Angeles, California • Orange, California • San Francisco, California + 6 more

Conditions: Atrial Fibrillation
Interventions: Omega -3 fatty acids, Placebo; Drug
Lead sponsor: Brigham and Women's Hospital; Other
Eligibility: 18 Years and older
Enrollment: 1,516 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2010 – 2012
U.S. locations: 1
States / cities: Boston, Massachusetts

Conditions: Sickle Cell Disease, HEMOGLOBIN SS, Hemoglobin S Beta-0 Thalassemia, Inflammation, Quality of Life
Interventions: Omega-3 Fatty Acids: Eicosapentaenoic Acid (EPA) and Docosahexaenoic Acid (DHA), Placebo Capsules; Dietary Supplement · Other
Lead sponsor: Thomas Jefferson University; Other
Eligibility: 10 Years to 19 Years
Enrollment: 48 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2010 – 2012
U.S. locations: 2
States / cities: Philadelphia, Pennsylvania

Conditions: Cancer, Cardiovascular Disease
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: 50 Years and older
Enrollment: 25,871 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2010 – 2031
U.S. locations: 1
States / cities: Boston, Massachusetts

Conditions: Inflammation
Interventions: Omega 3 (Fish Oil) Supplementation, Placebo; Dietary Supplement
Lead sponsor: Ohio State University; Other
Eligibility: 40 Years to 88 Years
Enrollment: 138 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2006 – 2011
U.S. locations: 1
States / cities: Columbus, Ohio

Conditions: Asthma, Obesity
Interventions: omega-3 polyunsaturated fatty acids, Omega-3 Fatty Acid; Dietary Supplement · Drug
Lead sponsor: Nemours Children's Clinic; Other
Eligibility: 12 Years to 25 Years
Enrollment: 143 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2010 – 2016
U.S. locations: 3
States / cities: Jacksonville, Florida • Orlando, Florida • Tampa, Florida

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

Conditions: Breast Cancer, Ovarian Neoplasm, Pain
Interventions: Omega-3 fatty acid, Placebo, Paclitaxel; Dietary Supplement · Drug
Lead sponsor: New Mexico Cancer Research Alliance; Other
Eligibility: 18 Years and older
Enrollment: 60 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2016 – 2022
U.S. locations: 2
States / cities: Albuquerque, New Mexico

Conditions: Cardiovascular Risk Factors
Interventions: fish oil, Placebo; Dietary Supplement
Lead sponsor: Milton S. Hershey Medical Center; Other
Eligibility: 20 Years to 79 Years
Enrollment: 3 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2007
U.S. locations: 1
States / cities: Hershey, Pennsylvania

Conditions: Strength, Body Composition, Muscle Soreness
Interventions: Omega-3 fatty acid, Placebo; Dietary Supplement
Lead sponsor: Baylor University; Other
Eligibility: 18 Years to 25 Years
Enrollment: 33 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2023
U.S. locations: 1
States / cities: Waco, Texas

Conditions: Attention Deficit Hyperactivity Disorder (ADHD), Deficient Emotional Self-Regulation (DESR)
Interventions: ADHD Medication, Omega-3 Fatty Acids; Drug
Lead sponsor: Massachusetts General Hospital; Other
Eligibility: 18 Years to 55 Years
Enrollment: 2 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2012 – 2017
U.S. locations: 1
States / cities: Boston, Massachusetts

Conditions: Cardiovascular Disease, Inflammation
Interventions: Eicosapentaenoic Acid and Docosahexaenoic Acid (EPA + DHA); Biological
Lead sponsor: Penn State University; Other
Eligibility: 20 Years to 45 Years
Enrollment: 125 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2011 – 2014
U.S. locations: 1
States / cities: University Park, Pennsylvania

Conditions: Respiratory Distress Syndrome, Adult
Interventions: Minimal (Trophic) Feeding, Full Feeding, Omega-3 Fatty Acids and Antioxidant Supplements, Placebo; Behavioral · Dietary Supplement
Lead sponsor: National Heart, Lung, and Blood Institute (NHLBI); NIH
Eligibility: 13 Years and older
Enrollment: 272 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2007 – 2009
U.S. locations: 41
States / cities: Fresno, California • Sacramento, California • San Francisco, California + 20 more

Conditions: Endometriosis
Interventions: Vitamin D3, Fish Oil, Placebo; Dietary Supplement · Other
Lead sponsor: Boston Children's Hospital; Other
Eligibility: 12 Years to 25 Years · Female only
Enrollment: 69 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2014 – 2016
U.S. locations: 1
States / cities: Boston, Massachusetts

Conditions: Ocular Surface Disease
Interventions: Fishoil supplement, Olive Oil; Dietary Supplement
Lead sponsor: University of Illinois Chicago; Other
Eligibility: 18 Years and older
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2012 – 2017
U.S. locations: 1
States / cities: Chicago, Illinois

Conditions: Brain Health, Brain Function, Brain Development
Interventions: Fish Oil, Safflower Oil; Dietary Supplement
Lead sponsor: Wake Forest University Health Sciences; Other
Eligibility: 18 Years and older · Male only
Enrollment: 22 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2020
U.S. locations: 1
States / cities: Winston-Salem, North Carolina

Conditions: Breast Cancer, Precancerous Condition
Interventions: omega-3 fatty acid, placebo; Dietary Supplement · Other
Lead sponsor: OHSU Knight Cancer Institute; Other
Eligibility: 21 Years to 120 Years · Female only
Enrollment: 16 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2007 – 2013
U.S. locations: 2
States / cities: Portland, Oregon

Conditions: Venous Stasis Ulcers
Interventions: Fish Oil; Dietary Supplement
Lead sponsor: Ohio State University; Other
Eligibility: 18 Years to 85 Years
Enrollment: 41 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2013 – 2015
U.S. locations: 1
States / cities: Columbus, Ohio

Conditions: Autoimmune Diseases, Systemic Inflammatory Process, Knee Pain Chronic, Osteoarthritis, Rheumatoid Arthritis
Interventions: Fish Oil, Vitamin D, placebo pill; Drug · Dietary Supplement · Other
Lead sponsor: Brigham and Women's Hospital; Other
Eligibility: 50 Years and older
Enrollment: 25,871 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2010 – 2025
U.S. locations: 1
States / cities: Boston, Massachusetts

Conditions: Mild Concussion, Brain Concussion, Cerebral Concussion
Interventions: Docosahexaenoic acid, Placebo; Dietary Supplement · Drug
Lead sponsor: East Carolina University; Other
Eligibility: 18 Years to 40 Years
Enrollment: 62 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2013 – 2017
U.S. locations: 1
States / cities: Greenville, North Carolina

Conditions: Obesity
Interventions: Lovaza, Placebo; Drug
Lead sponsor: University of Pennsylvania; Other
Eligibility: 25 Years to 50 Years
Enrollment: 29 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2014 – 2017
U.S. locations: 1
States / cities: Philadelphia, Pennsylvania

Search by objective public record fields.

Omega 7 + 3 Combination and Systemic Inflammation

Fiber and Fish Oil Supplements for the Prevention of Colorectal Cancer

Omega-3 and Blueberry Supplementation in Age-Related Cognitive Decline

Nutritional Intervention to Prevent Diabetes

Omega-3 Fatty Acids for Prevention of Post-Operative Atrial Fibrillation

A Randomized Trial of LOVAZA in Pediatric Sickle Cell Disease (SCD)

Vitamin D and Omega-3 Trial (VITAL)

Fish Oil (Omega 3), Immune Function, and Mood

Obesity and Asthma: Nutrigenetic Response to Omega-3 Fatty Acids

Omega-3 Fatty Acid Administration in Dialysis Patients

Omega-3 Fatty Acid in Treating Pain in Patients With Breast or Ovarian Cancer Receiving Paclitaxel

Fish Oil and Biomarkers of Cardiovascular Risk

Omega-3 Fatty Acid Supplementation to Enhance Performance

Omega-3 Fatty Acid Supplementation to ADHD Pharmacotherapy in ADHD Adults With Deficient Emotional Self-Regulation Traits

Dose Response Effects of Marine Omega-3 Fatty Acids on Inflammation

Early Versus Delayed Enteral Feeding and Omega-3 Fatty Acid/Antioxidant Supplementation for Treating People With Acute Lung Injury or Acute Respiratory Distress Syndrome (The EDEN-Omega Study)

Supplementation in Adolescent Girls With Endometriosis

Omega 3 Supplementation and Ocular Surface Disease in Glaucoma

Effect of Fish Oil on Athlete's Executive Function

Omega-3 Fatty Acids in Treating Women With Newly Diagnosed Ductal Carcinoma In Situ and/or Atypical Ductal Hyperplasia

Testing Fish Oil Derivatives In Healing Of Chronic Venous Leg Ulcers

Vitamin D and Fish Oil for Autoimmune Disease, Inflammation and Knee Pain

High Dose Omega-3 Fatty Acids in the Treatment of Sport Related Concussions

Fish Oils and Adipose Inflammation Reduction