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ClinicalTrials.gov public records Last synced Sep 16, 2026, 5:11 PM EDT

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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Placebo supplements Clear all
Terminated Phase 2Phase 3 Interventional Accepts healthy volunteers

Trenev Trio/Healthy Trinity for Symptoms of Diarrhea-predominant Irritable Bowel Syndrome (IBS) and Functional Dyspepsia

NCT01268618
View directory record Official record
Conditions
IBS-D and Functional Dyspepsia
Interventions
Probiotic, Placebo
Dietary Supplement
Lead sponsor
Sprim Advanced Life Sciences
Other
Eligibility
18 Years to 75 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
2
States / cities
Duluth, Georgia • Norfolk, Virginia
Source: ClinicalTrials.gov public record
Updated Jul 20, 2011 · Synced Sep 16, 2026, 5:11 PM EDT
Completed Phase 4 Interventional Results available

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

NCT01733147
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Jan 10, 2022 · Synced Sep 16, 2026, 5:11 PM EDT
Active, not recruiting Not applicable Interventional

Product Responsiveness to Enhanced Bioavailability Curcumin Dietary Supplements in Adults

NCT07196046
View directory record Official record
Conditions
Joint Discomfort, Quality of Life (QOL)
Interventions
Supplement 2, Supplement 3, Supplement 1
Dietary Supplement
Lead sponsor
Ultra Botanica LLC
Other
Eligibility
30 Years to 85 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Feb 12, 2026 · Synced Sep 16, 2026, 5:11 PM EDT
Recruiting Not applicable Interventional

Study to Evaluate the Efficacy of a Probiotic in Infantile Colic Symptoms Relief

NCT05432479
View directory record Official record
Conditions
Infantile Colic
Interventions
Probiotic, Placebo
Dietary Supplement
Lead sponsor
The Archer-Daniels-Midland Company
Industry
Eligibility
3 Weeks to 12 Weeks
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 8, 2025 · Synced Sep 16, 2026, 5:11 PM EDT
Withdrawn Phase 2 Interventional

Trial of Pancreatic Enzyme Supplements (Pancrelipase) for Treating Pain in Patients With Chronic Pancreatitis

NCT02706236
View directory record Official record
Conditions
Pancreatitis
Interventions
Pancrelipase, placebo
Drug
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Feb 26, 2018 · Synced Sep 16, 2026, 5:11 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

How Does Perimenopausal Menorrhagia Affect Women's Quality of Life and Cognitive Function?

NCT06798584
View directory record Official record
Conditions
Iron Deficiency Anemia Treatment, Iron Deficiency, Iron Deficiency (Without Anemia)
Interventions
FeoSol Original Iron Supplement Tablets, 21st Century Gelatin Capsules
Dietary Supplement
Lead sponsor
Purdue University
Other
Eligibility
18 Years and older · Female only
Enrollment
240 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Feb 12, 2025 · Synced Sep 16, 2026, 5:11 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of an Oral Probiotic Intervention With or Without a Novel ADP-1 Toothpaste

NCT05330793
View directory record Official record
Conditions
Oral Health
Interventions
Oral probiotic, Placebo
Dietary Supplement
Lead sponsor
USANA Health Sciences
Industry
Eligibility
18 Years to 65 Years
Enrollment
105 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
South Jordan, Utah
Source: ClinicalTrials.gov public record
Updated Apr 20, 2023 · Synced Sep 16, 2026, 5:11 PM EDT
Completed Phase 2Phase 3 Interventional Results available

PTH & Ibandronate Combination Study (PICS)

NCT00683163
View directory record Official record
Conditions
Osteoporosis
Interventions
PTH(1-84), Ibandronate, Placebo injection, Placebo pills
Drug · Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
55 Years to 75 Years · Female only
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Nov 4, 2013 · Synced Sep 16, 2026, 5:11 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Blood Flow Restriction With and Without Arginine on Physical Performance and Growth Hormone

NCT04079010
View directory record Official record
Conditions
Blood Flow Restriction, Growth Hormone, Strength Outcomes, Arginine
Interventions
BFR, Arginine, Placebo Pill
Procedure · Dietary Supplement
Lead sponsor
University of Mary Hardin-Baylor
Other
Eligibility
18 Years to 25 Years · Female only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Belton, Texas
Source: ClinicalTrials.gov public record
Updated Apr 1, 2020 · Synced Sep 16, 2026, 5:11 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effect of a Dietary Supplement on Quality of Life

NCT05323084
View directory record Official record
Conditions
Quality of Life
Interventions
Dietary supplement
Dietary Supplement
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
50 Years and older
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Source: ClinicalTrials.gov public record
Updated Dec 15, 2024 · Synced Sep 16, 2026, 5:11 PM EDT
Recruiting Phase 2 Interventional

Neurovascular Transduction During Exercise in Chronic Kidney Disease

NCT02947750
View directory record Official record
Conditions
Renal Insufficiency, Chronic
Interventions
6R-BH4, 6R-BH4 placebo, Folic acid, Exercise training, Stretching, Histidine and beta-alanine supplementation, Histidine and beta-alanine placebo
Drug · Other · Dietary Supplement
Lead sponsor
Emory University
Other
Eligibility
18 Years to 75 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2027
U.S. locations
3
States / cities
Atlanta, Georgia • Decatur, Georgia
Source: ClinicalTrials.gov public record
Updated May 17, 2026 · Synced Sep 16, 2026, 5:11 PM EDT
Completed Phase 2 Interventional

Calcium and Vitamin D vs Markers of Adenomatous Polyps

NCT00208793
View directory record Official record
Conditions
Colorectal Adenomatous Polyps
Interventions
Calcium and vitamin D3 combined, Placebo, Calcium, Vitamin D3
Dietary Supplement · Drug
Lead sponsor
Emory University
Other
Eligibility
30 Years to 74 Years
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2013
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Nov 25, 2013 · Synced Sep 16, 2026, 5:11 PM EDT
Completed Not applicable Interventional

Dietary Maneuvers to Reduce Production of Colon-Derived Uremic Solutes

NCT01186276
View directory record Official record
Conditions
Kidney Failure, Chronic
Interventions
Fiber, Corn starch
Dietary Supplement
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
58 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
3
States / cities
Palo Alto, California • Redwood City, California • San Jose, California
Source: ClinicalTrials.gov public record
Updated Aug 24, 2022 · Synced Sep 16, 2026, 5:11 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Turmeric and Turmeric-containing Tablets and Sebum Production

NCT03065504
View directory record Official record
Conditions
Skin Inflammation
Interventions
Turmeric, Turmeric-containing combination tablet, Placebo tablets
Dietary Supplement
Lead sponsor
University of California, Davis
Other
Eligibility
18 Years to 60 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Dec 19, 2018 · Synced Sep 16, 2026, 5:11 PM EDT
Completed Not applicable Interventional Results available

The Effect of Grape Seed Extract on Blood Pressure in People With Pre-Hypertension

NCT00979732
View directory record Official record
Conditions
Hypertension
Interventions
grape seed extract, grape seed extract placebo
Dietary Supplement
Lead sponsor
Clinical Nutrition Research Center, Illinois Institute of Technology
Industry
Eligibility
25 Years to 65 Years
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2014
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 10, 2021 · Synced Sep 16, 2026, 5:11 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Oral Probiotics on the Shift in Gut Microbiome and Skin Carotenoid Levels

NCT04841694
View directory record Official record
Conditions
Human Microbiome
Interventions
Probiotic
Dietary Supplement
Lead sponsor
Integrative Skin Science and Research
Industry
Eligibility
40 Years and older
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated May 2, 2021 · Synced Sep 16, 2026, 5:11 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Fiber and Fish Oil Supplements for the Prevention of Colorectal Cancer

NCT04211766
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Sep 26, 2024 · Synced Sep 16, 2026, 5:11 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Fruit and Vegetable Juice Concentrate Effects on RBP4 and Antioxidant Capacity in Lean and Overweight 6-10 Year Old Boys

NCT00842543
View directory record Official record
Conditions
Obesity
Interventions
Fruit and Vegetable Juice Concentrate (FVJC), Placebo
Dietary Supplement
Lead sponsor
Nemours Children's Clinic
Other
Eligibility
6 Years to 10 Years · Male only
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2011
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Sep 25, 2013 · Synced Sep 16, 2026, 5:11 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

One Week Clinical Study in Subjects With Menopausal Symptoms

NCT06794021
View directory record Official record
Conditions
Healthy, Menopause
Interventions
Dietary Supplement with Proprietary Herbal Extract Blend and GABA, Placebo
Dietary Supplement · Other
Lead sponsor
Olly, PBC
Industry
Eligibility
40 Years to 65 Years · Female only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jul 14, 2025 · Synced Sep 16, 2026, 5:11 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Investigating the Effects of Nutrition on the Maturation of Brain Networks Associated With Memory in Infants

NCT02457078
View directory record Official record
Conditions
Healthy
Interventions
Postnatal Dietary Supplement, Control Supplement
Dietary Supplement
Lead sponsor
University of Illinois at Urbana-Champaign
Other
Eligibility
18 Years and older · Female only
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
Urbana, Illinois
Source: ClinicalTrials.gov public record
Updated May 3, 2017 · Synced Sep 16, 2026, 5:11 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Clinical Trial Evaluating the Viability of L. Casei + Fish Oil Capsules

NCT01464814
View directory record Official record
Conditions
Signs and Symptoms, Digestive
Interventions
probiotic plus fish oil capsule, Fish oil capsule
Dietary Supplement
Lead sponsor
Nutrition 21, Inc.
Industry
Eligibility
21 Years to 75 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Pembroke Pines, Florida
Source: ClinicalTrials.gov public record
Updated Nov 15, 2011 · Synced Sep 16, 2026, 5:11 PM EDT
Completed Not applicable Interventional Results available

Vitamin D Supplements for HIV-positive Patients on cART

NCT01295034
View directory record Official record
Conditions
HIV-associated Co-morbidities
Interventions
conventional vitamin D treatment, tiered/titrated vitamin D dosing
Dietary Supplement · Drug
Lead sponsor
Andrea Branch
Other
Eligibility
18 Years to 70 Years
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 16, 2017 · Synced Sep 16, 2026, 5:11 PM EDT
Active, not recruiting Not applicable Interventional

Probiotics and Insulin Resistance in Obese Asthmatics

NCT05949255
View directory record Official record
Conditions
Asthma, Obesity, Insulin Resistance
Interventions
Probiotic, Placebo
Dietary Supplement
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 99 Years
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Jan 15, 2026 · Synced Sep 16, 2026, 5:11 PM EDT
Completed Not applicable Interventional Results available

Probiotics and Antibiotic Associated Diarrhea in Pediatric Complicated Appendicitis

NCT04529980
View directory record Official record
Conditions
Appendicitis, Appendicitis; Perforation
Interventions
Lactobacillus rhamnosus GG (LGG) Probiotic, Placebo
Dietary Supplement
Lead sponsor
Children's Health
Other
Eligibility
4 Years to 18 Years
Enrollment
98 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Aug 12, 2024 · Synced Sep 16, 2026, 5:11 PM EDT