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ClinicalTrials.gov public records Last synced Nov 7, 2026, 2:46 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 601–619 of 619 matching trials from the live ClinicalTrials.gov search.

Filters: Intervention: Oral Supplement Clear all

Conditions: Myelodysplastic Syndromes, Chronic Myelomonocytic Leukemia-1, Cytopenia
Interventions: Vitamin C (ascorbic acid), Placebo; Dietary Supplement · Other
Lead sponsor: Copenhagen University Hospital, Rigshospitalet; Other
Eligibility: 18 Years and older
Enrollment: 109 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2017 – 2025
U.S. locations: 1
States / cities: Los Angeles, California

Conditions: Cardiovascular Diseases
Interventions: Rhamnan sulfate; Dietary Supplement
Lead sponsor: University of Texas at Austin; Other
Eligibility: 35 Years to 85 Years
Enrollment: 15 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2023 – 2025
U.S. locations: 1
States / cities: Austin, Texas

Conditions: Healthy
Interventions: Placebo, Dietary Supplement with actives; Dietary Supplement
Lead sponsor: Olly, PBC; Industry
Eligibility: 18 Years to 50 Years
Enrollment: 100 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2025
U.S. locations: 1
States / cities: St. Petersburg, Florida

Conditions: Heart Failure, Systolic
Interventions: nicotinamide riboside, Placebo; Dietary Supplement · Drug
Lead sponsor: University of Washington; Other
Eligibility: 18 Years and older
Enrollment: 30 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2016 – 2019
U.S. locations: 1
States / cities: Seattle, Washington

Conditions: Knee Osteoarthritis (OA)
Interventions: Collagen Hydrolysate, Placebo; Dietary Supplement
Lead sponsor: GELITA; Industry
Eligibility: 49 Years to 90 Years
Enrollment: 30 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2007 – 2009
U.S. locations: 1
States / cities: Boston, Massachusetts

Conditions: Cardiovascular Kidney Metabolic Syndrome
Interventions: Intervention, Active Comparator; Drug
Lead sponsor: Ohio State University; Other
Eligibility: 18 Years and older
Enrollment: 23,280,000 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2025 – 2029
U.S. locations: 1
States / cities: Columbus, Ohio

Conditions: Type 1 Diabetes Mellitus
Interventions: Allogeneic Pancreatic Islet Cells, Belatacept, Basiliximab, Mycophenolate Mofetil, Tacrolimus, Intraportal infusion of islet cells; Biological · Drug · Procedure
Lead sponsor: National Institute of Allergy and Infectious Diseases (NIAID); NIH
Eligibility: 18 Years to 65 Years
Enrollment: 10 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2008 – 2013
U.S. locations: 1
States / cities: Atlanta, Georgia

Conditions: Hypovitaminosis D, Hypovitaminosis
Interventions: Vitamin Arm 1, Vitamin Arm 2, Vitamin Arm 3, Placebo; Dietary Supplement · Other
Lead sponsor: Madigan Army Medical Center; Federal
Eligibility: 18 Years to 69 Years
Enrollment: 96 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2025 – 2026
U.S. locations: 1
States / cities: Tacoma, Washington

Conditions: Submandibular Gland Tumor, Parotid Gland Tumor
Interventions: Alda-341; Drug
Lead sponsor: Stanford University; Other
Eligibility: 18 Years to 85 Years
Enrollment: 10 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2016 – 2017
U.S. locations: 1
States / cities: Stanford, California

Conditions: Effect of Resveratrol on Performance and Recovery
Interventions: Resveratrol (VRES) 500 mg oral once daily., Placebo 500 mg oral once daily.; Other
Lead sponsor: University of Central Florida; Other
Eligibility: 18 Years to 40 Years · Male only
Enrollment: 20 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2024 – 2025
U.S. locations: 1
States / cities: Orlando, Florida

Conditions: Aging Problems
Interventions: Sulforaphane, Placebo capsules; Dietary Supplement
Lead sponsor: Northern Arizona University; Other
Eligibility: 60 Years and older
Enrollment: 32 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2023 – 2025
U.S. locations: 1
States / cities: Flagstaff, Arizona

Conditions: Premature, Preterm Infant Health, Vitamin A Deficiency, Human Milk, Breastfeeding
Interventions: Oral multivitamin containing vitamin A; Dietary Supplement
Lead sponsor: University of Mississippi Medical Center; Other
Eligibility: 18 Years to 45 Years
Enrollment: 20 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2026 – 2027
U.S. locations: 1
States / cities: Jackson, Mississippi

Conditions: Dysbiosis, Gut -microbiota, Microbiome Analysis, Probiotic, Antibiotic Prophylaxis
Interventions: Placebo Capsule, Probiotic with Human Milk Oligosaccharides (HMO); Drug · Dietary Supplement
Lead sponsor: Acibadem Maslak Hospital; Other
Eligibility: 18 Years to 65 Years
Enrollment: 60 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2025
U.S. locations: 1
States / cities: Philadelphia, Pennsylvania

Conditions: Childhood Obesity, Maternal Obesity During Childbirth, Insulin Resistance, Inflammation
Interventions: Probiotics, Placebo; Dietary Supplement
Lead sponsor: Arkansas Children's Hospital Research Institute; Other
Eligibility: 18 Years and older · Female only
Enrollment: 60 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2017 – 2019
U.S. locations: 1
States / cities: Little Rock, Arkansas

Conditions: Healthy
Interventions: Low oxalate controlled Diet, Primed, continuous intravenous infusion of 13C2-Glycolate, Bolus intravenous infusion of 13C2-Glycolate, Oral bolus administration of 13C2-Glycolate; Dietary Supplement · Other
Lead sponsor: University of Alabama at Birmingham; Other
Eligibility: 18 Years to 75 Years
Enrollment: 15 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2020 – 2030
U.S. locations: 1
States / cities: Birmingham, Alabama

Conditions: Bone Marrow Transplant- Autologous or Allogeneic
Interventions: Breastmilk; Dietary Supplement
Lead sponsor: Children's Hospital Medical Center, Cincinnati; Other
Eligibility: Up to 5 Years
Enrollment: 11 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2013 – 2014
U.S. locations: 1
States / cities: Cincinnati, Ohio

Conditions: Diabetes Mellitus, Type 1, Hypoglycemia, Diabetes Mellitus, Diabetes, Autoimmune
Interventions: Cholecalciferol, Omega 3 fatty acid; Drug
Lead sponsor: Rodolfo Alejandro; Other
Eligibility: 6 Years to 65 Years
Enrollment: 27 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2018 – 2024
U.S. locations: 1
States / cities: Miami, Florida

Conditions: Oral Microbiome
Interventions: Placebo-Control Supplement, Streptococcus-Containing Probiotic Supplement; Dietary Supplement
Lead sponsor: University of California, Davis; Other
Eligibility: 21 Years to 45 Years
Enrollment: 26 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2018 – 2021
U.S. locations: 1
States / cities: Davis, California

Conditions: Docosohexaenoic Acid Supplementation of Mothers to
Interventions: Expecta 200 mg, Expecta 1 gram; Drug
Lead sponsor: Children's Hospital Medical Center, Cincinnati; Other
Eligibility: Up to 45 Years · Female only
Enrollment: 27 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2013 – 2018
U.S. locations: 1
States / cities: Cincinnati, Ohio

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Epigenetics, Vitamin C, and Abnormal Blood Cell Formation - Vitamin C in Patients With Low-Risk Myeloid Malignancies

Seaweed-derived Rhamnan Sulfate and Vascular Function

A Randomized Double Blind, Placebo Controlled Clinical Study Evaluating the Efficacy and Safety of Magnesium Supplementation on Relaxation in Adults

Nicotinamide Riboside in Systolic Heart Failure

A Placebo-Controlled Study of Collagen Hydrolysate in Subjects With Knee Osteoarthritis (OA)

Using Secondary Data to Evaluate Sex-based Heterogeneity of GLP-1 Agonists and SGLT2 Inhibitors on Cardiovascular-Kidney-Metabolic Health (CKMH) Outcomes in Real-world Settings (DASH-CKMH)

LEA29Y (Belatacept) Emory Edmonton Protocol

Evaluating Response to Vitamin D3 and K2 Supplementation in Healthcare Personnel

Human Salivary Gland Disposition of Alda-341 in Patients Undergoing Salivary Gland Surgery

Effect of Resveratrol Supplementation on Exercise Performance and Recovery

Treatment Strategy to Enhance Nrf2 Signaling in Older Adults

Vitamin A Supplementation and Breast Milk Vitamin A Levels in Mothers of Preterm Infants

Impact of Probiotics on Gut Microbiome During Antibiotic Prophylaxis in Elective Orthopedic Surgery

Prenatal Probiotic Intervention

Renal Metabolism of Glycolate to Oxalate

Human Breastmilk in Children Receiving a Bone Marrow Transplant

Pilot Study of OMEGA-3 and Vitamin D in High-Dose in Type I Diabetic Patients

The Probiotic for Oral Health (PRO Health) Study

DHA Supplementation for Lactating Mothers