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Showing 1–24 of 215 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Maltodextrin placebo Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Pilot Study to Examine the Acute Impact of Veillonella Supplementation on Exercise and Lactate Responses

NCT05816291
View directory record Official record
Conditions
Lactate Blood Increase, Exhaustion - Physiological
Interventions
Time to Exhaustion at velocity at VO2max
Dietary Supplement
Lead sponsor
Lindenwood University
Other
Eligibility
18 Years to 50 Years
Enrollment
7 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Saint Charles, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 17, 2023 · Synced Sep 3, 2026, 1:42 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Feasibility of an Oral Intervention for Sexual Health in Transgender Men

NCT06470906
View directory record Official record
Conditions
Vaginal Dysbiosis, Vaginal Disease, Molecular-bacterial Vaginosis
Interventions
Probiotic Group, Placebo Group
Dietary Supplement
Lead sponsor
Columbia University
Other
Eligibility
18 Years to 45 Years · Male only
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Brooklyn, New York
Source: ClinicalTrials.gov public record
Updated May 8, 2025 · Synced Sep 3, 2026, 1:42 PM EDT
Completed Not applicable Interventional

Mechanisms of Palmitoylethanolamide (PEA) to Alter Pain Sensitivity in Knee Osteoarthritis

NCT05406726
View directory record Official record
Conditions
Osteoarthritis, Knee
Interventions
palmitoylethanolamide, Placebo
Dietary Supplement
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
40 Years to 80 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 4, 2024 · Synced Sep 3, 2026, 1:42 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of New Zealand Blackcurrant Supplementation on Exercise and Cognitive Performance in Resistance-Trained Adults

NCT07619976
View directory record Official record
Conditions
Resistance Exercise Performance, Cognitive Function, Anaerobic Performance, Dietary Supplementation Athletic Performance
Interventions
Low-dose Blackcurrant Supplement, High-dose Blackcurrant Supplement, Maltodextrin (Placebo)
Dietary Supplement
Lead sponsor
Jacksonville State University
Other
Eligibility
18 Years to 40 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Jacksonville, Alabama
Source: ClinicalTrials.gov public record
Updated Jun 1, 2026 · Synced Sep 3, 2026, 1:42 PM EDT
Completed Not applicable Interventional

A Study to Evaluate the Effects of a Fiber Supplement on Gut Health

NCT07755735
View directory record Official record
Conditions
Gut Health, Bloating, Irregular Bowel Movements, Gastrointestinal Symptoms
Interventions
Active Supplement, Placebo Comparator
Dietary Supplement
Lead sponsor
Belli Welli Inc.
Industry
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Las Vegas, Nevada
Source: ClinicalTrials.gov public record
Updated Aug 9, 2026 · Synced Sep 3, 2026, 1:42 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Alpha-GPC on Muscle Power, GH Levels, and Cognitive Function

NCT06690619
View directory record Official record
Conditions
Cognition - Other, Strength Outcomes
Interventions
Placebo, 315 mg Alpha-GPC, 630 mg Alpha-GPC
Dietary Supplement
Lead sponsor
Lindenwood University
Other
Eligibility
25 Years to 55 Years · Male only
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Canfield, Ohio
Source: ClinicalTrials.gov public record
Updated Nov 14, 2024 · Synced Sep 3, 2026, 1:42 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of a Novel Blend of Plant Protein and Additional Ingredients on Resistance Training Adaptations

NCT06908811
View directory record Official record
Conditions
Resistance Exercise
Interventions
Novel Plant Protein Blend, Pea/Rice Protein Blend, Whey Protein, Carbohydrate Placebo
Dietary Supplement
Lead sponsor
Lindenwood University
Other
Eligibility
18 Years to 39 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
Saint Charles, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 2, 2025 · Synced Sep 3, 2026, 1:42 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Tart Cherry Supplementation & Gut Microbiome and Inflammation

NCT04467372
View directory record Official record
Conditions
Inflammation, Glucose Regulation, Sleep
Interventions
Tart cherry juice concentrate, Juice placebo, Freeze dried tart cherry powder, Capsule placebo
Dietary Supplement
Lead sponsor
Ohio University
Other
Eligibility
18 Years to 55 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Athens, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 8, 2021 · Synced Sep 3, 2026, 1:42 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Effects of Collagen Peptide Supplementation on Connective Tissue Remodeling, Functional Outcomes, and Wound Healing After Total Knee Arthroplasty (TKA)

NCT05823727
View directory record Official record
Conditions
Knee Osteoarthritis
Interventions
SOLUGEL, Placebo
Dietary Supplement
Lead sponsor
University of Arkansas
Other
Eligibility
50 Years to 75 Years
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated May 26, 2026 · Synced Sep 3, 2026, 1:42 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Microbiota Diversity and Composition and Polyphenol Bioavailability

NCT02677649
View directory record Official record
Conditions
Fecal Microbiota
Interventions
cranberry, placebo
Other
Lead sponsor
Tufts University
Other
Eligibility
20 Years to 55 Years
Enrollment
11 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 22, 2017 · Synced Sep 3, 2026, 1:42 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of Pumpkin Seed Oil Supplementation on Cardiovascular Function in Postmenopausal Women.

NCT03716960
View directory record Official record
Conditions
Elevated Blood Pressure, Hypertension
Interventions
Pumpkin Seed Oil, Placebo
Other
Lead sponsor
Marymount University
Other
Eligibility
45 Years to 65 Years · Female only
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Arlington, Virginia
Source: ClinicalTrials.gov public record
Updated Oct 23, 2018 · Synced Sep 3, 2026, 1:42 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Brown Seaweed as a Breast Cancer Preventive

NCT01204957
View directory record Official record
Conditions
Breast Cancer
Interventions
Seaweed and Soy Protein, Placebo and Soy Protein
Dietary Supplement
Lead sponsor
University of South Carolina
Other
Eligibility
18 Years to 80 Years · Female only
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1998 – 1999
U.S. locations
1
States / cities
Worcester, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 5, 2015 · Synced Sep 3, 2026, 1:42 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Bacillus Subtilis BS50 Supplementation on Gastrointestinal Symptoms in Healthy Adults

NCT05004454
View directory record Official record
Conditions
Gastrointestinal Health, Immune Health, Cardiovascular Health, Digestive Health
Interventions
Bacillus subtilis BS50 spore preparation, Maltodextrin
Dietary Supplement
Lead sponsor
BIO-CAT Microbials, LLC
Industry
Eligibility
30 Years to 65 Years
Enrollment
76 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Addison, Illinois
Source: ClinicalTrials.gov public record
Updated Jan 4, 2023 · Synced Sep 3, 2026, 1:42 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Impact of Soluble Arabinoxylan and Rice Bran Fiber on the Gut Microbiome in Healthy Adults

NCT06873204
View directory record Official record
Conditions
Healthy
Interventions
Soluble Arabinoxylan, Rice Bran, Maltodextrin (Placebo)
Dietary Supplement
Lead sponsor
Purdue University
Other
Eligibility
18 Years to 45 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Jun 28, 2025 · Synced Sep 3, 2026, 1:42 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of PeakATP on Mood, Reaction Time and Cognition

NCT05100589
View directory record Official record
Conditions
Cognitive Change, Mood
Interventions
PeakATP, Placebo
Dietary Supplement
Lead sponsor
University of Central Florida
Other
Eligibility
18 Years to 40 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Aug 7, 2022 · Synced Sep 3, 2026, 1:42 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Microbial Enzyme Impact on Postprandial Nutrient Levels and Gastrointestinal Symptoms in Healthy Adults

NCT05211440
View directory record Official record
Conditions
Digestive Health, Gastrointestinal Health
Interventions
Placebo + Meal, BC-006 + Meal
Dietary Supplement
Lead sponsor
University of Illinois at Urbana-Champaign
Other
Eligibility
40 Years to 75 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Urbana, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 17, 2023 · Synced Sep 3, 2026, 1:42 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of a Microalgae Extract Dietary Supplement on Gut Health, Anxiety, and Immune Function

NCT06425094
View directory record Official record
Conditions
Gastrointestinal Problem, Anxiety, Stress, Gastrointestinal Symptoms
Interventions
Microalgae Extract Capsules, Placebo
Dietary Supplement
Lead sponsor
Colorado State University
Other
Eligibility
18 Years to 55 Years
Enrollment
62 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Fort Collins, Colorado
Source: ClinicalTrials.gov public record
Updated Feb 16, 2026 · Synced Sep 3, 2026, 1:42 PM EDT
Completed Phase 2 Interventional

Inositol Supplementation to Treat PCOS (INSUPP-PCOS)

NCT03864068
View directory record Official record
Conditions
Polycystic Ovary Syndrome, Anovulation, Hyperandrogenism, Insulin Resistance, Glucose Intolerance, Metabolic Complication
Interventions
Placebo, Inositol
Other · Drug
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
154 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
2
States / cities
Hershey, Pennsylvania • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 6, 2026 · Synced Sep 3, 2026, 1:42 PM EDT
Completed Phase 3 Interventional

Evaluation of the Efficacy, Durability, Safety, and Tolerability of RP-G28 in Patients With Lactose Intolerance

NCT03597516
View directory record Official record
Conditions
Lactose Intolerance
Interventions
RP-G28, Placebos
Drug
Lead sponsor
Ritter Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
557 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
35
States / cities
Birmingham, Alabama • Chula Vista, California • Huntington Park, California + 31 more
Source: ClinicalTrials.gov public record
Updated Jul 7, 2019 · Synced Sep 3, 2026, 1:42 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Evaluation of the Effects of a Novel Dietary Microalgae Based Ingredient on Muscle Recovery and Endurance Capacity

NCT05760742
View directory record Official record
Conditions
Healthy
Interventions
MicAlgae, Placebo
Dietary Supplement
Lead sponsor
Microphyt
Industry
Eligibility
18 Years to 35 Years · Male only
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Sep 21, 2023 · Synced Sep 3, 2026, 1:42 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Nicotinamide Adenine Dinucleotide Responses to a Nutritional Supplement

NCT07428889
View directory record Official record
Conditions
Healthy Adult
Interventions
Proprietary Nutritional Supplement, Placebo Supplement
Dietary Supplement
Lead sponsor
Shaklee Corporation
Industry
Eligibility
45 Years to 65 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Addison, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 5, 2026 · Synced Sep 3, 2026, 1:42 PM EDT
Completed Not applicable Interventional

The Effect of NADPH Oxidase and Creatine Supplementation on Microvascular Blood Flow Regulation

NCT06018480
View directory record Official record
Conditions
Endothelial Dysfunction
Interventions
Creatine Monohydrate, Maltodextrin (Placebo)
Other
Lead sponsor
Florida State University
Other
Eligibility
18 Years to 70 Years
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Tallahassee, Florida
Source: ClinicalTrials.gov public record
Updated May 15, 2024 · Synced Sep 3, 2026, 1:42 PM EDT
Completed Not applicable Interventional

MiraLAX Versus Placebo to Prevent Constipation Following Urogynecologic Surgery

NCT01691742
View directory record Official record
Conditions
Post Procedural Constipation
Interventions
MiraLax, Placebo, Rescue Laxative
Drug
Lead sponsor
Duke University
Other
Eligibility
19 Years and older · Female only
Enrollment
131 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 14, 2017 · Synced Sep 3, 2026, 1:42 PM EDT
Recruiting Phase 2 Interventional

Aquamin® for Prevention of Ulcerative Colitis J-Pouch-associate Intestinal Inflammation

NCT07501078
View directory record Official record
Conditions
Ulcerative Colitis, Ileal Pouch
Interventions
Aquamin, Placebo
Drug
Lead sponsor
Muhammad N Aslam, MD
Other
Eligibility
18 Years to 80 Years
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Aug 25, 2026 · Synced Sep 3, 2026, 1:42 PM EDT