- Conditions
- Cognitive Decline, Cognitive Impairment
- Interventions
- Vitamin D
- Other
- Lead sponsor
- National Institute on Aging (NIA)
- NIH
- Eligibility
- 30 Years to 64 Years
- Enrollment
- 3,720 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2004 – 2013
- U.S. locations
- 1
- States / cities
- Baltimore, Maryland
Search Results
Search by objective public record fields.
Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results come from ClinicalTrials.gov. When the live registry is unavailable, a clearly labeled stored copy may be shown.
These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Showing 193–216
of 374
matching trials from the live ClinicalTrials.gov search.
- Conditions
- Bone Metabolism Biomarkers, Bone Mineral Density, Physical Fitness
- Interventions
- Vitamin D3, Physical Activity
- Drug · Behavioral
- Lead sponsor
- University of Rochester
- Other
- Eligibility
- 18 Years to 99 Years · Female only
- Enrollment
- 191 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2011 – 2026
- U.S. locations
- 1
- States / cities
- Rochester, New York
- Conditions
- Osteoporosis, Bone Loss, Osteopenia
- Interventions
- Intervention I, Intervention II
- Other · Dietary Supplement
- Lead sponsor
- USDA, Western Human Nutrition Research Center
- Federal
- Eligibility
- 50 Years to 65 Years · Female only
- Enrollment
- 12 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2010 – 2013
- U.S. locations
- 1
- States / cities
- Davis, California
- Conditions
- Healthy
- Interventions
- vitamin D2, vitamin D3
- Dietary Supplement
- Lead sponsor
- Creighton University
- Other
- Eligibility
- 21 Years to 65 Years
- Enrollment
- 32 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2010
- U.S. locations
- 1
- States / cities
- Omaha, Nebraska
- Conditions
- Menopause
- Interventions
- multi-vitamin, multi-nutrient, Placebo
- Dietary Supplement
- Lead sponsor
- Biologica Inc
- Industry
- Eligibility
- 43 Years to 55 Years · Female only
- Enrollment
- 80 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2025 – 2026
- U.S. locations
- 1
- States / cities
- Chicago, Illinois
- Conditions
- Knee Osteoarthritis
- Interventions
- Vitamin D, Control
- Drug
- Lead sponsor
- Rush University Medical Center
- Other
- Eligibility
- 18 Years to 80 Years
- Enrollment
- 137 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2020 – 2022
- U.S. locations
- 1
- States / cities
- Chicago, Illinois
- Conditions
- Type1diabetes
- Interventions
- Very low carbohydrate diet
- Other
- Lead sponsor
- Boston Children's Hospital
- Other
- Eligibility
- 18 Years to 40 Years
- Enrollment
- 12 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2020 – 2026
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Hypertension
- Interventions
- Inorganic Nitrate
- Dietary Supplement
- Lead sponsor
- University of Virginia
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 12 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2024
- U.S. locations
- 1
- States / cities
- Charlottesville, Virginia
- Conditions
- Skin Health, Skin Aging of Face and Hands, Healthy, Ecchymosis
- Interventions
- Cyruta Plus: A Whole-Food Based Vitamin C supplement containing organic buckwheat (aerial parts) juice powder, organic buckwheat flour, bovine adrenal Cytosol™ extract, oat flour, honey, ascorbic acid, Low Dose Vitamin C, High Dose Vitamin C
- Dietary Supplement
- Lead sponsor
- Standard Process Inc.
- Industry
- Eligibility
- 55 Years and older
- Enrollment
- 30 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2025 – 2027
- U.S. locations
- 1
- States / cities
- Kannapolis, North Carolina
- Conditions
- Non-Cystic Acne
- Interventions
- VitaMedica® Clear Skin Formula capsules, Placebo Capsules
- Dietary Supplement · Other
- Lead sponsor
- Ablon Skin Institute Research Center
- Other
- Eligibility
- 18 Years to 40 Years
- Enrollment
- 40 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2023 – 2024
- U.S. locations
- 1
- States / cities
- Manhattan Beach, California
- Conditions
- Premenstrual Syndrome
- Interventions
- Premenstrual Syndrome Supplement
- Dietary Supplement
- Lead sponsor
- Rael
- Industry
- Eligibility
- 18 Years to 40 Years · Female only
- Enrollment
- 40 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2023 – 2024
- U.S. locations
- 1
- States / cities
- Santa Monica, California
- Conditions
- Heart Failure
- Interventions
- R Drink
- Dietary Supplement
- Lead sponsor
- Ohio State University
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 10 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2019 – 2020
- U.S. locations
- 1
- States / cities
- Columbus, Ohio
- Conditions
- Autism
- Interventions
- Multi-Vitamin/Mineral Supplement, Liquid Placebo
- Dietary Supplement · Other
- Lead sponsor
- Arizona State University
- Other
- Eligibility
- 3 Years to 60 Years
- Enrollment
- 143 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2008 – 2009
- U.S. locations
- 1
- States / cities
- Tempe, Arizona
- Conditions
- Malnutrition, Pancreatic Cancer
- Interventions
- proteolytic enzymes, gemcitabine hydrochloride, Gonzalez regimen
- Biological · Drug · Procedure
- Lead sponsor
- Columbia University
- Other
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 90 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 1999 – 2004
- U.S. locations
- 1
- States / cities
- New York, New York
- Conditions
- Hyperlipidemia
- Interventions
- FishOil, CBE75, CBE150, placebo
- Dietary Supplement
- Lead sponsor
- MetaProteomics LLC
- Industry
- Eligibility
- 18 Years to 72 Years
- Enrollment
- 18 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2012
- U.S. locations
- 1
- States / cities
- Gig Harbor, Washington
- Conditions
- Pregnancy
- Interventions
- Perelel Prenatal Vitamin, Generic Prenatal Vitamin
- Dietary Supplement
- Lead sponsor
- University of Pittsburgh
- Other
- Eligibility
- 14 Years and older · Female only
- Enrollment
- 600 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2026 – 2027
- U.S. locations
- 1
- States / cities
- Pittsburgh, Pennsylvania
- Conditions
- Disorder of Vitamin B12
- Interventions
- Vitamin B12
- Dietary Supplement
- Lead sponsor
- University of Florida
- Other
- Eligibility
- 18 Years to 49 Years
- Enrollment
- 21 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2005
- U.S. locations
- 1
- States / cities
- Gainesville, Florida
- Conditions
- Post-Lyme Disease Syndrome (PLDS)
- Interventions
- ReaLife+ (RLP), Inert Brown powder
- Dietary Supplement · Other
- Lead sponsor
- Optimal Health Research
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 30 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2019 – 2020
- U.S. locations
- 1
- States / cities
- Salt Lake City, Utah
- Conditions
- Diabetes Mellitus, Type 1
- Interventions
- Antioxidant supplement, Diabetes treatment, Regular Insulin
- Dietary Supplement · Other · Drug
- Lead sponsor
- Nemours Children's Clinic
- Other
- Eligibility
- 12 Years to 21 Years
- Enrollment
- 41 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2008 – 2011
- U.S. locations
- 1
- States / cities
- Jacksonville, Florida
- Conditions
- Chronic Kidney Disease Stage 3 and 4
- Interventions
- Ergocalciferol, Cholecalciferol
- Drug
- Lead sponsor
- The Cleveland Clinic
- Other
- Eligibility
- 18 Years to 99 Years
- Enrollment
- 19 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2010 – 2011
- U.S. locations
- 1
- States / cities
- Cleveland, Ohio
- Conditions
- Nutrition Status
- Interventions
- Carotenoid Nutritional Supplement, Placebo
- Dietary Supplement
- Lead sponsor
- Pharmanex
- Industry
- Eligibility
- 20 Years to 65 Years
- Enrollment
- 36 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2024 – 2025
- U.S. locations
- 1
- States / cities
- Provo, Utah
- Conditions
- Effect of Food Supplement
- Interventions
- Placebo, Hydrolized Collagen, PrimaColl, Whey protein
- Dietary Supplement
- Lead sponsor
- University of California, Davis
- Other
- Eligibility
- 18 Years to 30 Years
- Enrollment
- 20 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2022 – 2024
- U.S. locations
- 1
- States / cities
- Davis, California
- Conditions
- Hair Thinning, Hair Shedding
- Interventions
- Scale HLV Clinical Formula Hair Vitamins, Placebo
- Dietary Supplement · Other
- Lead sponsor
- Scale Media Inc
- Industry
- Eligibility
- 35 Years and older · Female only
- Enrollment
- 100 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2024
- U.S. locations
- 1
- States / cities
- Santa Monica, California
- Conditions
- Folate Deficiency, Neural Tube Defects
- Interventions
- Fortified Iodized Salt with Folic Acid (FISFA)
- Dietary Supplement
- Lead sponsor
- University of Alabama at Birmingham
- Other
- Eligibility
- 18 Years to 45 Years · Female only
- Enrollment
- 250 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2026 – 2028
- U.S. locations
- 1
- States / cities
- Birmingham, Alabama