Independent directory Public ClinicalTrials.gov records United States
Clear filters

These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.

ClinicalTrials.gov public records Last synced Oct 1, 2026, 6:50 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–22 of 22 matching trials from the live ClinicalTrials.gov search.
Conditions
Osteoporosis, Postmenopausal
Interventions
teriparatide, Placebo, Calcium Supplement, Vitamin D Supplement
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
30 Years to 85 Years · Female only
Enrollment
1,637 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1996 – 1999
U.S. locations
1
States / cities
Boston, Massachusetts
Completed Not applicable Interventional Accepts healthy volunteers

Resveratrol for the Prevention of Bone Loss in Postmenopausal Women

NCT06250283
Conditions
Low Bone Mass
Interventions
Resveratrol, Placebo
Dietary Supplement
Lead sponsor
University of Delaware
Other
Eligibility
Female only
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Newark, Delaware
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Establishing the Vitamin D Requirements During Lactation

NCT00412074
Conditions
Vitamin D Deficiency
Interventions
400 IU Vitamin D3 (cholecalciferol), 2400 IU Vitamin D3 (cholecalciferol), 6400 IU Vitamin D3 (cholecalciferol)
Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
460 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2012
U.S. locations
2
States / cities
Rochester, New York • Charleston, South Carolina
Conditions
Deficiency of Vitamin D3, COPD
Interventions
Cholecalciferol, multivitamin, Placebo
Dietary Supplement
Lead sponsor
University of Pittsburgh
Other
Eligibility
50 Years to 85 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Completed Not applicable Interventional Accepts healthy volunteers

Dairy Foods Compared to Dietary Supplements and Bone Health

NCT01394484
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
Metastatic Cancer, Prostate Cancer
Interventions
zoledronic acid, placebo, androgen deprivation therapy, GnRH agonist, Calcium supplement, Vitamin D
Drug · Other · Dietary Supplement
Lead sponsor
Alliance for Clinical Trials in Oncology
Other
Eligibility
18 Years and older · Male only
Enrollment
645 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2014
U.S. locations
238
States / cities
Mobile, Alabama • Fort Smith, Arkansas • Little Rock, Arkansas + 159 more
Conditions
Osteopenia
Interventions
bisphosphonate therapy (risedronate), Vitamin D supplement, Calcium
Drug · Dietary Supplement
Lead sponsor
State University of New York - Upstate Medical University
Other
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2008
U.S. locations
1
States / cities
Syracuse, New York
Completed Not applicable Interventional Accepts healthy volunteers

Impact of Vitamin D Status on Bones in Breastfed Infants

NCT00697294
Conditions
Vitamin D Deficiency
Interventions
Tri-Vi-Sol
Dietary Supplement
Lead sponsor
Baylor College of Medicine
Other
Eligibility
Up to 2 Hours
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2011
U.S. locations
3
States / cities
Houston, Texas
Conditions
Premature Infants
Interventions
cholecalciferal, cholecalciferol
Dietary Supplement
Lead sponsor
University of Nebraska
Other
Eligibility
23 Weeks to 32 Weeks
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
Omaha, Nebraska
Conditions
Vitamin D Deficiency
Interventions
Placebo, 800 IU/day vitamin D supplementation with feedings in the first 28 days after birth, Usual Care
Dietary Supplement · Other
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
24 Hours to 96 Hours
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2029
U.S. locations
1
States / cities
Galveston, Texas
Completed Not applicable Interventional Accepts healthy volunteers

Prevention of Vitamin D Deficiency

NCT00494104
Conditions
Vitamin D Deficiency
Interventions
Vitamin D drops, 200 or 400 or 600 IU/day or 800 IU/day
Dietary Supplement
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
3 Weeks to 5 Weeks
Enrollment
398 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2011
U.S. locations
1
States / cities
Coralville, Iowa
Completed Phase 2 Interventional Results available

Males, Antioxidants, and Infertility Trial

NCT02421887
Conditions
Male Infertility
Interventions
Antioxidant Supplement, Placebo
Drug · Other
Lead sponsor
Yale University
Other
Eligibility
18 Years and older · Male only
Enrollment
171 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
10
States / cities
Los Angeles, California • San Francisco, California • Sunnyvale, California + 7 more
Completed Not applicable Interventional Accepts healthy volunteers

Vitamin D Needs of Early Adolescent Children

NCT00931580
Conditions
Healthy
Interventions
Vitamin D3
Dietary Supplement
Lead sponsor
University of Georgia
Other
Eligibility
9 Years to 13 Years
Enrollment
323 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
3
States / cities
Athens, Georgia • Indianapolis, Indiana • West Lafayette, Indiana
Conditions
Vitamin D Deficiency
Interventions
400 IU vitamin D3, 2,000 IU Vitamin D3
Dietary Supplement
Lead sponsor
USDA, Western Human Nutrition Research Center
Federal
Eligibility
18 Years to 45 Years · Female only
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
2
States / cities
Davis, California • Sacramento, California
Conditions
Peyronie's Disease
Interventions
Vitamin D2, Vitamin E, Testosterone Pellets
Drug
Lead sponsor
Men's Health Boston
Other
Eligibility
18 Years to 70 Years · Male only
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2017
U.S. locations
1
States / cities
Chestnut Hill, Massachusetts
Active, not recruiting Not applicable Interventional

ViDES Trial (Vitamin D Extra Supplementation)

NCT05459298
Conditions
Vitamin D Deficiency
Interventions
Placebo, 800 IU/day vitamin D supplementation with feedings in the first 28 days after birth, Usual Care
Dietary Supplement · Other
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
24 Hours to 96 Hours
Enrollment
180 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
1
States / cities
Houston, Texas
Completed Not applicable Interventional Accepts healthy volunteers

Curves 30/30 Study

NCT04344821
Conditions
Weight Loss
Interventions
Curves Calcium, Placebo
Dietary Supplement
Lead sponsor
Texas A&M University
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
57 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
College Station, Texas
Conditions
Osteoporosis, Prostate Cancer
Interventions
Calcium, Zoledronic acid, radiation therapy, LHRH, Vitamin D
Dietary Supplement · Radiation · Drug
Lead sponsor
Radiation Therapy Oncology Group
Network
Eligibility
18 Years and older · Male only
Enrollment
109 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2014
U.S. locations
80
States / cities
Chico, California • Los Angeles, California • Pomona, California + 66 more
Conditions
Colorectal Adenomatous Polyps
Interventions
Calcium and vitamin D3 combined, Placebo, Calcium, Vitamin D3
Dietary Supplement · Drug
Lead sponsor
Emory University
Other
Eligibility
30 Years to 74 Years
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2013
U.S. locations
1
States / cities
Atlanta, Georgia
Conditions
Food Allergy
Interventions
Food Supplement
Dietary Supplement
Lead sponsor
Northwestern University
Other
Eligibility
5 Months to 11 Months
Enrollment
705 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Chicago, Illinois
Conditions
Postmenopausal Osteoporosis
Interventions
Strength/Weight Training & Drug/Supplement, Drug/Supplement only
Other · Combination Product
Lead sponsor
University of Nebraska
Other
Eligibility
35 Years to 75 Years · Female only
Enrollment
249 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2007
U.S. locations
4
States / cities
Kearney, Nebraska • Lincoln, Nebraska • Omaha, Nebraska + 1 more
Completed Not applicable Interventional Accepts healthy volunteers

Vitamin D Supplement Study for Adolescents

NCT00909454
Conditions
Vitamin D Deficiency, Overweight, Obesity
Interventions
2000 IU Vitamin D3 daily supplement, 400 IU Vitamin D3 supplement
Dietary Supplement
Lead sponsor
Augusta University
Other
Eligibility
14 Years to 19 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
1
States / cities
Augusta, Georgia