Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Oct 21, 2026, 6:39 PM EDT

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Showing 553–576 of 1,844 matching trials from the live ClinicalTrials.gov search.
Conditions
Weight Loss, Obesity
Interventions
Protein supplementation, Diet counseling and group education lessons
Dietary Supplement · Behavioral
Lead sponsor
Duke University
Other
Eligibility
45 Years and older · Female only
Enrollment
105 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
1
States / cities
Durham, North Carolina
Conditions
Anemia, Sickle Cell
Interventions
Arginine, Placebo
Drug
Lead sponsor
UCSF Benioff Children's Hospital Oakland
Other
Eligibility
5 Years and older
Enrollment
128 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2008
U.S. locations
17
States / cities
Oakland, California • San Francisco, California • Denver, Colorado + 10 more
Conditions
Cirrhosis, PTSD
Interventions
Resistant potato starch, Powdered cellulose
Dietary Supplement
Lead sponsor
Hunter Holmes Mcguire Veteran Affairs Medical Center
Federal
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Richmond, Virginia
Recruiting Not applicable Interventional Accepts healthy volunteers

Potassium, Hydration, Cardiovascular, and Kidney Study (PHACKs)

NCT06062017
Conditions
Blood Pressure, Hydration, Vascular Disease Risk
Interventions
Water and Potassium supplementation
Dietary Supplement
Lead sponsor
Auburn University
Other
Eligibility
18 Years to 30 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
1
States / cities
Auburn, Alabama
Completed Not applicable Interventional Accepts healthy volunteers

Protein Supplementation Post Bariatric Surgery

NCT02951663
Conditions
Bariatric Surgery Candidate
Interventions
Protein
Dietary Supplement
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 70 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Conditions
Overactive Bladder (OAB)
Interventions
Zinc Citrate Oral Capsule, Placebo
Drug
Lead sponsor
Endeavor Health
Other
Eligibility
21 Years to 100 Years · Female only
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
Skokie, Illinois
Conditions
Diabetes Mellitus, Vitamin D Deficiency
Interventions
Vitamin D
Dietary Supplement
Lead sponsor
Ascension Health
Industry
Eligibility
34 Years to 69 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Flint, Michigan
Not listed Not applicable Interventional Accepts healthy volunteers

Metabolic Responses to Spermidine Supplementation.

NCT05459961
Conditions
Healthy Subjects
Interventions
oral spermidine
Dietary Supplement
Lead sponsor
Chrysea Labs Lda
Industry
Eligibility
50 Years to 70 Years · Male only
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
Addison, Illinois
Conditions
Focus of Study is Amino Acid Appearace in Blood
Interventions
Bacillus subtilis DE111, Placebo
Dietary Supplement
Lead sponsor
Lipscomb University
Other
Eligibility
18 Years to 34 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Nashville, Tennessee
Completed Not applicable Interventional Accepts healthy volunteers Results available

Immune Function and Muscle Adaptations to Resistance Exercise in Older Adults

NCT02261961
Conditions
Sarcopenia, Aging, Immune Function
Interventions
TDAP, Acute Resistance Exercise, Resistance Exercise Training, Post-training Follow-up, Nutritional Supplement (Muscle Armor), Placebo (Kool-Aid)
Biological · Other · Dietary Supplement
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
60 Years to 80 Years
Enrollment
59 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2019
U.S. locations
1
States / cities
North Little Rock, Arkansas
Terminated Phase 1 Interventional Accepts healthy volunteers

Ascending Glycan Dietary Supplementation in Healthy Adults

NCT04466761
Conditions
Healthy Individuals
Interventions
Monosaccharide Powder, Placebo Comparator
Dietary Supplement · Other
Lead sponsor
University of California, Davis
Other
Eligibility
18 Years to 45 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Sacramento, California
Conditions
Crohn's Disease, Vitamin D Deficiency
Interventions
Cholecalciferol
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
8 Years to 18 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2017
U.S. locations
1
States / cities
Los Angeles, California
Not listed Not applicable Interventional Accepts healthy volunteers

Almond Supplementation on Mild to Moderate Acne

NCT05269641
Conditions
Acne Vulgaris
Interventions
Food: whole almonds, Food: non-nut snack
Other
Lead sponsor
Integrative Skin Science and Research
Industry
Eligibility
15 Years to 45 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Sacramento, California
Completed Not applicable Interventional Results available

Vitamin C Supplementation Intervention

NCT04036110
Conditions
Heart Failure
Interventions
Vitamin C 500 mg, Vitamin C 1000 mg, Placebo
Dietary Supplement · Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 99 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Conditions
Gestational Diabetes Mellitus, Pregnancy, High Risk
Interventions
Metformin, Insulin
Drug
Lead sponsor
Ohio State University
Other
Eligibility
18 Years and older · Female only
Enrollment
1,572 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2030
U.S. locations
26
States / cities
Tuscaloosa, Alabama • Los Angeles, California • San Francisco, California + 20 more
Conditions
Ulcerative Colitis, Inflammatory Bowel Diseases
Interventions
Fecal Microbiota Transplantation, Psyllium Husk Powder
Drug · Dietary Supplement
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years to 89 Years
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
New York, New York
Conditions
Insulin Resistance
Interventions
Food plan with cinnamon supplementation, Food plan without cinnamon supplementation
Dietary Supplement · Behavioral
Lead sponsor
Woman's
Other
Eligibility
Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Conditions
Hospitalized Elderly
Interventions
Ready to Drink Flavored Beverage, Ready to drink flavored beverage w/ AN 777
Other
Lead sponsor
Abbott Nutrition
Industry
Eligibility
65 Years and older
Enrollment
652 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
115
States / cities
Auburn, Alabama • Birmingham, Alabama • Huntsville, Alabama + 100 more
Conditions
Pre Diabetes, Impaired Glucose Tolerance, Insulin Sensitivity, Insulin Resistance, Glucose Metabolism Disorders, Metabolic Syndrome
Interventions
Eubacterium hallii, Placebo
Dietary Supplement · Other
Lead sponsor
Atlantia Food Clinical Trials
Industry
Eligibility
21 Years to 69 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Chicago, Illinois
Conditions
Brain Tumor Related Epilepsy (BTRE)
Interventions
Vitamin B6 100 MG
Dietary Supplement
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Durham, North Carolina
Conditions
Acute Renal Failure
Interventions
TPN nutritional supplement
Drug
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2005
U.S. locations
1
States / cities
Nashville, Tennessee
Conditions
Urticaria, Angioedema, Hives, Swelling
Interventions
High Dose Vitamin D3, Low Dose Vitamin D3
Drug
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years and older
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
Omaha, Nebraska
Conditions
Healthy Aging
Interventions
Nutritional supplement, Placebo
Dietary Supplement
Lead sponsor
Athletic Greens International
Industry
Eligibility
18 Years to 45 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Canfield, Ohio
Conditions
Hip Fractures
Interventions
Juven, Centrum Silver 50+
Drug
Lead sponsor
The University of Texas Health Science Center at San Antonio
Other
Eligibility
65 Years to 89 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
2
States / cities
San Antonio, Texas