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Showing 1–24 of 216 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Placebo: maltodextrin Clear all
Completed Phase 3 Interventional Results available

A Phase III Safety and Efficacy Study of L-Glutamine to Treat Sickle Cell Disease or Sickle βo-thalassemia

NCT01179217
View directory record Official record
Conditions
Sickle Cell Anemia, Sickle ß0-Thalassemia
Interventions
L-glutamine, Placebo
Drug
Lead sponsor
Emmaus Medical, Inc.
Industry
Eligibility
5 Years and older
Enrollment
230 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
31
States / cities
Mobile, Alabama • Phoenix, Arizona • Inglewood, California + 23 more
Source: ClinicalTrials.gov public record
Updated Aug 18, 2020 · Synced Sep 8, 2026, 4:52 PM EDT
Completed Not applicable Interventional

The Effects of a High Protein Diet on Microbiota, Gastrointestinal Function and Wellness in Older Women

NCT02445560
View directory record Official record
Conditions
Aging
Interventions
Probiotic capsule and Fiber Sachet, Probiotic capsule and Placebo sachet, Placebo capsule and Fiber Sachet, Placebo capsule and Placebo sachet
Dietary Supplement
Lead sponsor
University of Florida
Other
Eligibility
65 Years and older · Female only
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015
U.S. locations
2
States / cities
Gainesville, Florida • Ocala, Florida
Source: ClinicalTrials.gov public record
Updated Mar 28, 2018 · Synced Sep 8, 2026, 4:52 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Fibersol-2 Clinical Trials Related to Appetite

NCT01305291
View directory record Official record
Conditions
Lack of Satiety
Interventions
placebo, digestion-resistant maltodextrin
Other · Dietary Supplement
Lead sponsor
Iowa State University
Other
Eligibility
18 Years to 62 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Ames, Iowa
Source: ClinicalTrials.gov public record
Updated Feb 27, 2011 · Synced Sep 8, 2026, 4:52 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Gastrointestinal And Metabolic Effects From a Prebiotic, Lifting, and Aerobic iNtervention

NCT05207488
View directory record Official record
Conditions
Overweight and Obesity
Interventions
Fructooligosaccharides (FOS), Exercise, Placebo
Dietary Supplement · Behavioral
Lead sponsor
University of Illinois at Urbana-Champaign
Other
Eligibility
20 Years to 45 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Urbana, Illinois
Source: ClinicalTrials.gov public record
Updated Nov 9, 2022 · Synced Sep 8, 2026, 4:52 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Efficacy of a Nutritional Supplement on Skin Health in Generally Healthy Adults

NCT03771807
View directory record Official record
Conditions
Skin Health
Interventions
Beauty From Within, Placebo, Facial cleansing
Dietary Supplement · Other
Lead sponsor
Pharmanex
Industry
Eligibility
40 Years to 60 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
High Point, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 8, 2020 · Synced Sep 8, 2026, 4:52 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Gut, Immune, and Vascular Health in Metabolically Healthy Obesity

NCT07559227
View directory record Official record
Conditions
Metabolically Healthy Obesity
Interventions
Inulin Supplementation, Maltodextrin (Placebo), High-fat meal
Dietary Supplement · Other
Lead sponsor
Ball State University
Other
Eligibility
18 Years to 55 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Muncie, Indiana
Source: ClinicalTrials.gov public record
Updated Apr 29, 2026 · Synced Sep 8, 2026, 4:52 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Pilot Study to Determine the Bioavailability of Oral Beta-Aminoisobutyric Acid (BAIBA) Ingestion

NCT05328271
View directory record Official record
Conditions
Absorption; Chemicals
Interventions
Beta-Aminoisobutyric Acid
Dietary Supplement
Lead sponsor
Lindenwood University
Other
Eligibility
18 Years to 50 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Saint Charles, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 13, 2022 · Synced Sep 8, 2026, 4:52 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Creatine Timing on Resistance Training Adaptations in College Athletes

NCT05451498
View directory record Official record
Conditions
Healthy
Interventions
Creatine, Maltodextrin
Dietary Supplement
Lead sponsor
Rocky Mountain University of Health Professions
Other
Eligibility
19 Years to 30 Years
Enrollment
47 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Provo, Utah
Source: ClinicalTrials.gov public record
Updated Jul 11, 2022 · Synced Sep 8, 2026, 4:52 PM EDT
Terminated Phase 2 Interventional Results available

L-Glutamine Therapy for Sickle Cell Anemia

NCT00586209
View directory record Official record
Conditions
Sickle Cell Anemia, Thalassemia
Interventions
L-Glutamine, Placebo
Drug
Lead sponsor
Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2009
U.S. locations
1
States / cities
Torrance, California
Source: ClinicalTrials.gov public record
Updated Feb 1, 2021 · Synced Sep 8, 2026, 4:52 PM EDT
Recruiting Phase 2 Interventional

Combined Oral Contraceptive Pill and Resistance Starch

NCT06852365
View directory record Official record
Conditions
Metabolic Syndrome, Polycystic Ovary Syndrome
Interventions
wheat dextrin, Oral Contraceptives, Low-Dose, Maltodextrin
Dietary Supplement · Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 31, 2026 · Synced Sep 8, 2026, 4:52 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Iron Supplementation and Side Effects

NCT04018300
View directory record Official record
Conditions
Iron Deficiency Anemia, Iron Overload
Interventions
Ferrous sulfate, Aspiron, Placebo
Dietary Supplement · Other
Lead sponsor
Iowa State University
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Ames, Iowa
Source: ClinicalTrials.gov public record
Updated Jul 11, 2019 · Synced Sep 8, 2026, 4:52 PM EDT
Withdrawn Phase 2Phase 3 Interventional

Essential Amino Acid Supplementation in Older Adult COVID-19 Patients

NCT04816071
View directory record Official record
Conditions
Covid19
Interventions
Essential amino acids, Maltodextrin
Drug · Dietary Supplement
Lead sponsor
University of Arkansas
Other
Eligibility
55 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Sep 2, 2024 · Synced Sep 8, 2026, 4:52 PM EDT
Not yet recruiting Phase 2 Interventional

Inulin Supplementation for Reducing Inflammation and Knee Pain in Older Adults With Osteoarthritis

NCT07189585
View directory record Official record
Conditions
Knee Osteoarthritis
Interventions
inulin, Maltodextrin (Placebo)
Drug
Lead sponsor
Yale University
Other
Eligibility
40 Years and older
Enrollment
84 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jul 6, 2026 · Synced Sep 8, 2026, 4:52 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effect of Spice Consumption on the Microbiome

NCT03676803
View directory record Official record
Conditions
Microbiota
Interventions
mixed spices, placebo capsule containing 5 g of maltodextrin
Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 65 Years
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Nov 18, 2019 · Synced Sep 8, 2026, 4:52 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Natural Modulators of Immune Function and Mood

NCT05508529
View directory record Official record
Conditions
Stress
Interventions
Chaga Mushroom, Algae Extract, Black Cumin Seed Oil, Black Cumin Seed Oil + Astaxanthin, Black Cumin Seed Oil + Omega 3, Placebo
Dietary Supplement
Lead sponsor
3 Waves Wellness
Industry
Eligibility
18 Years to 70 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Plymouth, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 18, 2022 · Synced Sep 8, 2026, 4:52 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

An Assessment of the Glyconutrient Ambrotose™ on Immunity, Gut Health, and Safety in Men and Women

NCT04386226
View directory record Official record
Conditions
Healthy
Interventions
Ambrotose LIFE, Advanced Ambrotose, Placebo
Dietary Supplement · Other
Lead sponsor
University of Memphis
Other
Eligibility
20 Years to 65 Years
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 27, 2021 · Synced Sep 8, 2026, 4:52 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

A Trial to Study the Effects of Ginseng and Cordyceps on Aerobic Capacity, Lactate Kinetics, and Nitric Oxide

NCT07729943
View directory record Official record
Conditions
Healthy Subjects With Low Energy Levels
Interventions
Panax ginseng, Cordycep Militaris, Placebo
Dietary Supplement · Other
Lead sponsor
Applied Food Sciences Inc.
Industry
Eligibility
40 Years to 65 Years
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Canfield, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 27, 2026 · Synced Sep 8, 2026, 4:52 PM EDT
Not listed Phase 3 Interventional

The RE-ENERGIZE Study: RandomizEd Trial of ENtERal Glutamine to minimIZE Thermal Injury

NCT00985205
View directory record Official record
Conditions
Burns
Interventions
Enteral Glutamine, Placebo
Dietary Supplement
Lead sponsor
Daren K. Heyland
Other
Eligibility
18 Years and older
Enrollment
1,201 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2021
U.S. locations
27
States / cities
Mobile, Alabama • Phoenix, Arizona • Los Angeles, California + 24 more
Source: ClinicalTrials.gov public record
Updated Dec 29, 2021 · Synced Sep 8, 2026, 4:52 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Role of a Dietary Supplement in Lowering SAH in Healthy Adults With Elevated Plasma SAH and Normal Homocysteine Levels

NCT05994794
View directory record Official record
Conditions
Elevated S-adenosylhomocysteine
Interventions
Alpha-GPC, Creatine and Ashwagandha (Sensoril®), Placebo
Dietary Supplement · Other
Lead sponsor
Standard Process Inc.
Industry
Eligibility
30 Years to 75 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
South Gate, California
Source: ClinicalTrials.gov public record
Updated Mar 6, 2024 · Synced Sep 8, 2026, 4:52 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

How Does a Synbiotic Supplement Affect Iron Status During Iron Repletion in Iron Depleted Female Athletes?

NCT03793959
View directory record Official record
Conditions
Iron-deficiency
Interventions
Synbiotic Supplement, Placebo
Dietary Supplement
Lead sponsor
Marywood University
Other
Eligibility
18 Years and older · Female only
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Scranton, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 3, 2019 · Synced Sep 8, 2026, 4:52 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Whey Protein, Resistance Training, and Changes in Body Composition

NCT01186536
View directory record Official record
Conditions
Obesity
Interventions
Whey Protein supplement, Soy Protein Supplement, Carbohydrate supplement
Dietary Supplement
Lead sponsor
University of Kansas
Other
Eligibility
18 Years to 30 Years
Enrollment
85 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2012
U.S. locations
1
States / cities
Lawrence, Kansas
Source: ClinicalTrials.gov public record
Updated Nov 8, 2012 · Synced Sep 8, 2026, 4:52 PM EDT
Withdrawn Phase 2 Interventional Accepts healthy volunteers

Exploring the Impact of Perioperative Galacto-Oligosaccharides (GOS) on Stress, Anxiety and Cognition

NCT02953691
View directory record Official record
Conditions
Anxiety, Pain, Surgery
Interventions
Galacto-Oligosaccharide, Maltodextrin (Placebo)
Drug
Lead sponsor
Jeff Taekman, M.D.
Other
Eligibility
21 Years to 70 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 30, 2018 · Synced Sep 8, 2026, 4:52 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 8, 2026, 4:52 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 8, 2026, 4:52 PM EDT