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ClinicalTrials.gov public records Last synced Oct 1, 2026, 9:31 AM EDT

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Showing 1–24 of 38 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: calcium carbonate with cholecalciferol Clear all
Completed Phase 3 Interventional Results available

A Severity-Adapted Clinical Trial of Diminished Bone Mineral Density in Acute Lymphoblastic Leukemia Survivors

NCT00186901
View directory record Official record
Conditions
Leukemia, Lymphoblastic, Acute, Osteoporosis
Interventions
Calcium carbonate (Tums), vitamin D, Placebo
Drug · Other
Lead sponsor
St. Jude Children's Research Hospital
Other
Eligibility
Not listed
Enrollment
429 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2011
U.S. locations
3
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated May 10, 2017 · Synced Oct 1, 2026, 9:31 AM EDT
Completed Phase 2 Interventional Results available

Safety and Efficacy of Alendronate (Fosamax) in Children With Osteoporosis

NCT00259857
View directory record Official record
Conditions
Osteoporosis
Interventions
Alendronate
Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
5 Years to 15 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2009
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Jan 19, 2011 · Synced Oct 1, 2026, 9:31 AM EDT
Completed Phase 2Phase 3 Interventional Results available

Vitamin D/Calcium Polyp Prevention Study

NCT00153816
View directory record Official record
Conditions
Colorectal Cancer, Polyps, Adenomas
Interventions
Calcium Carbonate, Vitamin D3, placebo
Drug
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
45 Years to 75 Years
Enrollment
2,813 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2016
U.S. locations
10
States / cities
Los Angeles, California • Denver, Colorado • Atlanta, Georgia + 7 more
Source: ClinicalTrials.gov public record
Updated Mar 15, 2017 · Synced Oct 1, 2026, 9:31 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

A Study of Changes in Bone Mineral Density as a Function of Consuming Two Different Forms of Calcium Carbonate

NCT01857154
View directory record Official record
Conditions
Osteopenia, Osteoporosis
Interventions
Micronized Calcium Carbonate, Non-Micronized Calcium Carbonate, Vitamin D3
Dietary Supplement
Lead sponsor
Integrative Health Technologies, Inc.
Network
Eligibility
21 Years and older
Enrollment
160 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Nov 25, 2013 · Synced Oct 1, 2026, 9:31 AM EDT
Completed Phase 2 Interventional Results available

Vitamin D Deficiency, Muscle Pain, Joint Pain, and Joint Stiffness in Postmenopausal Women Receiving Letrozole For Stage I-III Breast Cancer

NCT00416715
View directory record Official record
Conditions
Arthralgia, Musculoskeletal Complications, Pain, Recurrent Breast Cancer, Stage I Breast Cancer, Stage II Breast Cancer, Stage IIIA Breast Cancer, Stage IIIB Breast Cancer, Stage IIIC Breast Cancer
Interventions
letrozole, calcium carbonate, laboratory biomarker analysis, calcium citrate, calcium glucarate, calcium gluconate, cholecalciferol, assessment of therapy complications, musculoskeletal complications management/prevention
Drug · Dietary Supplement · Other + 1 more
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older · Female only
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2010
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jul 11, 2017 · Synced Oct 1, 2026, 9:31 AM EDT
Completed Not applicable Interventional Results available

Effects of Zoledronic Acid Versus Alendronate on Bone Loss After Kidney and Kidney/Pancreas Transplants

NCT00580047
View directory record Official record
Conditions
Renal Insufficiency
Interventions
Zoledronic Acid, Calcium with vitamin D, Alendronate
Drug · Combination Product
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years and older
Enrollment
59 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2014
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Oct 4, 2023 · Synced Oct 1, 2026, 9:31 AM EDT
Completed Phase 2 Interventional Results available

Effect of Alendronate on Bone in People With Chronic Spinal Cord Injury (SCI) Previously Treated With Teriparatide

NCT02195895
View directory record Official record
Conditions
Spinal Cord Injury, Bone Loss, Osteoporosis
Interventions
Alendronate, Calcium, Vitamin D
Drug · Dietary Supplement
Lead sponsor
Northwestern University
Other
Eligibility
21 Years and older
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 30, 2023 · Synced Oct 1, 2026, 9:31 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Study of Parental Ratings of Quality of Life and Body Composition in 5-19 Year Olds While Participating in the Good NEWS 4 Kids Program

NCT01855009
View directory record Official record
Conditions
Quality of Life, Body Mass Index
Interventions
MannaBears, AlgaeCal Calcium, Calcium carbonate, Vitamin D3
Dietary Supplement
Lead sponsor
Integrative Health Technologies, Inc.
Network
Eligibility
5 Years to 19 Years
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Jun 24, 2013 · Synced Oct 1, 2026, 9:31 AM EDT
Completed Not applicable Interventional

Randomized Study of Alendronate in Adult Patients With Cystic Fibrosis Related Osteoporosis

NCT00004489
View directory record Official record
Conditions
Osteoporosis, Cystic Fibrosis
Interventions
alendronate sodium, calcium carbonate, cholecalciferol
Drug
Lead sponsor
University of North Carolina
Other
Eligibility
18 Years to 45 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1998 – 2002
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 25, 2015 · Synced Oct 1, 2026, 9:31 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 1, 2026, 9:31 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 1, 2026, 9:31 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 1, 2026, 9:31 AM EDT
Completed Phase 2 Interventional

Calcium and Vitamin D vs Markers of Adenomatous Polyps

NCT00208793
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Nov 26, 2013 · Synced Oct 1, 2026, 9:31 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 1, 2026, 9:31 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 1, 2026, 9:31 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Vitamin D and Calcium Homeostasis for Prevention of Type 2 Diabetes

NCT00436475
View directory record Official record
Conditions
Glucose Intolerance, Type 2 Diabetes Mellitus, Metabolic Syndrome
Interventions
Vitamin D3 2,000 IU orally once daily, Calcium Carbonate 400 mg orally twice daily, Vitamin D3-Placebo, Calcium-Placebo
Drug
Lead sponsor
Tufts Medical Center
Other
Eligibility
40 Years and older
Enrollment
92 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 30, 2019 · Synced Oct 1, 2026, 9:31 AM EDT
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 1, 2026, 9:31 AM EDT
Completed Phase 2 Interventional Results available

Exemestane and Celecoxib in Postmenopausal Women at High Risk for Breast Cancer

NCT00073073
View directory record Official record
Conditions
Breast Neoplasms
Interventions
Exemestane, Calcium carbonate, Vitamin D
Drug · Dietary Supplement
Lead sponsor
Georgetown University
Other
Eligibility
Female only
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2011
U.S. locations
2
States / cities
Washington D.C., District of Columbia • Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated May 17, 2016 · Synced Oct 1, 2026, 9:31 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 1, 2026, 9:31 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 1, 2026, 9:31 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 1, 2026, 9:31 AM EDT
Completed Phase 3 Interventional Results available

Secondary Prevention of Osteoporosis

NCT00421343
View directory record Official record
Conditions
Osteoporosis
Interventions
alendronate with cholecalciferol, calcium carbonate with cholecalciferol, Falls prevention measures
Drug · Behavioral
Lead sponsor
Hebrew SeniorLife
Other
Eligibility
65 Years and older
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 5, 2020 · Synced Oct 1, 2026, 9:31 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 1, 2026, 9:31 AM EDT
Completed Phase 2 Interventional Results available

Adding Phosphorus to Osteoporosis Drug Treatment

NCT00074711
View directory record Official record
Conditions
Osteoporosis, Osteopenia
Interventions
Calcium carbonate, Calcium Phosphate
Drug
Lead sponsor
Creighton University
Other
Eligibility
60 Years to 85 Years · Female only
Enrollment
241 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2008
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Jul 6, 2016 · Synced Oct 1, 2026, 9:31 AM EDT