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ClinicalTrials.gov public records Last synced Oct 8, 2026, 5:28 AM EDT

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Showing 25–38 of 38 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: calcium carbonate with cholecalciferol Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Calcium Supplement Particle Size and Vitamin D Supplement on Calcium Retention in Adolescent Girls

NCT01005381
View directory record Official record
Conditions
Osteoporosis
Interventions
Small Particle Size Calcium Carbonate Supplement, Large Particle Size Calcium Carbonate Supplement, Vitamin D, Calcium Placebo
Dietary Supplement
Lead sponsor
Purdue University
Other
Eligibility
12 Years to 14 Years · Female only
Enrollment
55 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated May 9, 2018 · Synced Oct 8, 2026, 5:28 AM EDT
Completed Phase 2Phase 3 Interventional

The Effect of Vitamin D and Calcium on Bone in Pediatric HIV

NCT00724178
View directory record Official record
Conditions
HIV Infection, Bone Mass
Interventions
cholecalciferol plus calcium carbonate
Dietary Supplement
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
6 Years to 16 Years
Enrollment
59 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2006
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 15, 2010 · Synced Oct 8, 2026, 5:28 AM EDT
Completed Early Phase 1 Interventional

High Dose Vit D Musculoskeletal Symptoms & Bone Density in Anastrozole-Treated Breast Cancer With Marginal Vit D Status

NCT00263185
View directory record Official record
Conditions
Breast Neoplasms
Interventions
Vitamin D, Calcium carbonate, Vitamin D, Placebo
Dietary Supplement · Drug · Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older · Female only
Enrollment
63 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Sep 22, 2014 · Synced Oct 8, 2026, 5:28 AM EDT
Completed Phase 2 Interventional Results available

High Dose Vitamin D and Calcium for Bone Health in Individuals Initiating HAART

NCT01403051
View directory record Official record
Conditions
HIV-1 Infection
Interventions
EFV/FTC/TDF, Calcium Carbonate, Vitamin D3, Placebo for calcium carbonate, Placebo for vitamin D3
Drug
Lead sponsor
Advancing Clinical Therapeutics Globally for HIV/AIDS and Other Infections
Network
Eligibility
18 Years and older
Enrollment
167 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
38
States / cities
Birmingham, Alabama • Los Angeles, California • Palo Alto, California + 27 more
Source: ClinicalTrials.gov public record
Updated Oct 12, 2018 · Synced Oct 8, 2026, 5:28 AM EDT
Completed Phase 2 Interventional

The Effect of Alendronate, Calcium, and Vitamin D on Bone Mineral Density in HIV Infected Patients

NCT00061256
View directory record Official record
Conditions
HIV Infections
Interventions
Alendronate, Calcium carbonate, Vitamin D
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
25 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2006
U.S. locations
28
States / cities
Birmingham, Alabama • Los Angeles, California • San Diego, California + 17 more
Source: ClinicalTrials.gov public record
Updated Aug 7, 2009 · Synced Oct 8, 2026, 5:28 AM EDT
Completed Phase 2 Interventional

Phase II Randomized Study of Alendronate Sodium for Osteopenia in Patients With Gaucher's Disease

NCT00004488
View directory record Official record
Conditions
Gaucher's Disease, Osteopenia
Interventions
alendronate sodium, calcium carbonate, cholecalciferol
Drug
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
18 Years to 50 Years
Enrollment
82 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1998 – 2002
U.S. locations
2
States / cities
Cincinnati, Ohio • Dayton, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 25, 2015 · Synced Oct 8, 2026, 5:28 AM EDT
Completed Phase 2 Interventional Results available

Treatment of Hypoparathyroidism With Synthetic Human Parathyroid Hormone 1-34

NCT00001304
View directory record Official record
Conditions
Hypoparathyroidism
Interventions
Synthetic Human Parathyroid Hormone 1-34, Calcitriol & Calcium
Drug
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
17 Years to 69 Years
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1991 – 2014
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 15, 2015 · Synced Oct 8, 2026, 5:28 AM EDT
Completed Not applicable Interventional Results available

Impact of Vitamin D on Diabetic Kidney Disease in African Americans

NCT01214356
View directory record Official record
Conditions
Diabetic Kidney Disease
Interventions
Vitamin D3
Dietary Supplement
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years and older
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Oct 16, 2018 · Synced Oct 8, 2026, 5:28 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Study the Effects of Vitamin D and Calcium Supplementation at Tolerable Upper Limit Doses on Calcium Metabolism.

NCT02019381
View directory record Official record
Conditions
Delusion of Reference
Interventions
Endocrine Society UL Dosage Vitamin D, Institute of Medicine Dosage Vitamin D, Calcium
Dietary Supplement
Lead sponsor
Winthrop University Hospital
Other
Eligibility
50 Years to 90 Years · Female only
Enrollment
132 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
1
States / cities
Mineola, New York
Source: ClinicalTrials.gov public record
Updated Dec 22, 2016 · Synced Oct 8, 2026, 5:28 AM EDT
Terminated Not applicable Interventional

Cholecalciferol and Calcium Carbonate in Treating Patients With Colon Cancer That Has Been Removed by Surgery

NCT00470353
View directory record Official record
Conditions
Colorectal Cancer
Interventions
calcium carbonate, cholecalciferol, immunohistochemistry staining method, laboratory biomarker analysis, pharmacological study, biopsy
Dietary Supplement · Other · Procedure
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
18 Years to 120 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Aug 4, 2023 · Synced Oct 8, 2026, 5:28 AM EDT
Completed Phase 3 Interventional

Supplementation With Vitamin D, Calcium or Both on Calcium Absorption and Bone Mineral Content in Children With JRA

NCT00570934
View directory record Official record
Conditions
Juvenile Rheumatoid Arthritis
Interventions
Cholecalciferol, Calcium, Calcium and cholecalciferol, Placebo
Dietary Supplement · Drug
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
3 Years to 15 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1995 – 2002
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 10, 2016 · Synced Oct 8, 2026, 5:28 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study Assessing Dosing Time and Calcium and Vitamin D on the Relative BA of 35 mg DR Risedronate Dosed With Food

NCT00868907
View directory record Official record
Conditions
Healthy
Interventions
35 mg risedronate DR tablet
Drug
Lead sponsor
Warner Chilcott
Industry
Eligibility
40 Years to 70 Years · Female only
Enrollment
101 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
4
States / cities
Gainesville, Florida • Miami, Florida • Honolulu, Hawaii + 1 more
Source: ClinicalTrials.gov public record
Updated Oct 12, 2011 · Synced Oct 8, 2026, 5:28 AM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Calcium-Rich Food Versus Calcium Carbonate for Bone Health

NCT07763509
View directory record Official record
Conditions
Osteopenia, Osteoporosis, Bone Health in Perimenopausal Women, Menopause Related Conditions, Fracture Healing
Interventions
500 mg calcium from milk-derived minerals, Calcium Carbonate 500 MG
Other · Dietary Supplement
Lead sponsor
Cornell University
Other
Eligibility
40 Years to 90 Years · Female only
Enrollment
217 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 13, 2026 · Synced Oct 8, 2026, 5:28 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Vitamin D HIV Study on Postmenopausal Women

NCT01375010
View directory record Official record
Conditions
HIV
Interventions
Vitamin D3, Placebo, Vitamin Supplements
Drug · Other
Lead sponsor
Columbia University
Other
Eligibility
40 Years to 70 Years · Female only
Enrollment
85 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 7, 2019 · Synced Oct 8, 2026, 5:28 AM EDT