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Showing 1–22 of 22 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Oral calcium citrate Clear all
Completed Phase 1 Interventional Accepts healthy volunteers

Bioequivalence Study Comparing Calcium Acetate Oral Solution Versus Calcium Acetate Gelcaps in Healthy Volunteers

NCT00742820
View directory record Official record
Conditions
Hyperphosphatemia
Interventions
Calcium Acetate Oral Solution 667 mg per 5 mL, Calcium Acetate 667 mg GelCaps, Calcium Citrate 950 mg Caplets
Drug · Dietary Supplement
Lead sponsor
Fresenius Medical Care North America
Industry
Eligibility
18 Years to 75 Years
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 8, 2009 · Synced Sep 22, 2026, 10:02 PM EDT
Completed Phase 4 Interventional Results available

Novel Combination Therapy for Osteoporosis in Men

NCT03994172
View directory record Official record
Conditions
Male Osteoporosis
Interventions
Teriparatide or human parathyroid hormone (PTH) 1-34, Cinacalcet, placebo tablet, Calcium citrate tablet, Vitamin D3
Drug · Dietary Supplement
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
60 Years to 85 Years · Male only
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Sep 2, 2026 · Synced Sep 22, 2026, 10:02 PM EDT
Completed Phase 3 Interventional Results available

Combination Chemotherapy, Radiation Therapy, and an Autologous Peripheral Blood Stem Cell Transplant in Treating Young Patients With Atypical Teratoid/Rhabdoid Tumor of the Central Nervous System

NCT00653068
View directory record Official record
Conditions
Childhood Atypical Teratoid/Rhabdoid Tumor
Interventions
3-Dimensional Conformal Radiation Therapy, Autologous Hematopoietic Stem Cell Transplantation, Carboplatin, Cisplatin, Cyclophosphamide, Etoposide, Filgrastim, Laboratory Biomarker Analysis, Leucovorin Calcium, Methotrexate, Thiotepa, Vincristine Sulfate
Radiation · Procedure · Drug + 2 more
Lead sponsor
Children's Oncology Group
Network
Eligibility
Up to 21 Years
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2024
U.S. locations
87
States / cities
Birmingham, Alabama • Little Rock, Arkansas • Downey, California + 72 more
Source: ClinicalTrials.gov public record
Updated Apr 22, 2024 · Synced Sep 22, 2026, 10:02 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Ixazomib Plus Pomalidomide and Dexamethasone in Treating Patients With Relapsed or Relapsed/Refractory Multiple Myeloma

NCT02119468
View directory record Official record
Conditions
Refractory Plasma Cell Myeloma, Recurrent Plasma Cell Myeloma
Interventions
ixazomib citrate, dexamethasone, pomalidomide
Drug
Lead sponsor
City of Hope Medical Center
Other
Eligibility
18 Years and older
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2022
U.S. locations
5
States / cities
Scottsdale, Arizona • Duarte, California • Atlanta, Georgia + 2 more
Source: ClinicalTrials.gov public record
Updated Mar 14, 2024 · Synced Sep 22, 2026, 10:02 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Safety Study of RMJH-111b to Treat Essential Hypertension

NCT02822222
View directory record Official record
Conditions
Essential Hypertension
Interventions
Magnesium citrate, tribasic anhydrous soft gelatin capsule, Placebo soft gelatin capsule
Drug
Lead sponsor
RMJ Holdings, LLC
Industry
Eligibility
18 Years to 80 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016
U.S. locations
1
States / cities
Tustin, California
Source: ClinicalTrials.gov public record
Updated Sep 22, 2020 · Synced Sep 22, 2026, 10:02 PM EDT
Completed Phase 3 Interventional Results available

Chemotherapy With or Without Additional Chemotherapy and/or Radiation Therapy in Treating Children With Newly Diagnosed Hodgkin's Disease

NCT00025259
View directory record Official record
Conditions
Childhood Lymphocyte-Depleted Classical Hodgkin Lymphoma, Childhood Mixed Cellularity Classical Hodgkin Lymphoma, Childhood Nodular Lymphocyte Predominant Hodgkin Lymphoma, Childhood Nodular Sclerosis Classical Hodgkin Lymphoma, Stage I Childhood Hodgkin Lymphoma, Stage II Childhood Hodgkin Lymphoma, Stage III Childhood Hodgkin Lymphoma, Stage IV Childhood Hodgkin Lymphoma
Interventions
Bleomycin Sulfate, Cisplatin, Cyclophosphamide, Cytarabine, Dexamethasone, Doxorubicin Hydrochloride, Etoposide, Filgrastim, Involved-Field Radiation Therapy, Prednisone, Vincristine Sulfate Liposome
Biological · Drug · Radiation
Lead sponsor
Children's Oncology Group
Network
Eligibility
Up to 21 Years
Enrollment
1,734 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2002
U.S. locations
153
States / cities
Birmingham, Alabama • Phoenix, Arizona • Little Rock, Arkansas + 127 more
Source: ClinicalTrials.gov public record
Updated Apr 11, 2017 · Synced Sep 22, 2026, 10:02 PM EDT
Completed Phase 3 Interventional Results available

Combination Chemotherapy Followed By Peripheral Stem Cell Transplant in Treating Young Patients With Newly Diagnosed Supratentorial Primitive Neuroectodermal Tumors or High-Risk Medulloblastoma

NCT00336024
View directory record Official record
Conditions
Anaplastic Medulloblastoma, Medulloblastoma, Supratentorial Embryonal Tumor, Not Otherwise Specified, Untreated Childhood Supratentorial Primitive Neuroectodermal Tumor
Interventions
Autologous Hematopoietic Stem Cell Transplantation, Carboplatin, Cisplatin, Cyclophosphamide, Etoposide, Filgrastim, Laboratory Biomarker Analysis, Leucovorin Calcium, Methotrexate, Quality-of-Life Assessment, Thiotepa, Vincristine Sulfate
Procedure · Drug · Biological + 1 more
Lead sponsor
Children's Oncology Group
Network
Eligibility
Up to 2 Years
Enrollment
91 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2025
U.S. locations
129
States / cities
Birmingham, Alabama • Phoenix, Arizona • Little Rock, Arkansas + 100 more
Source: ClinicalTrials.gov public record
Updated Jan 22, 2026 · Synced Sep 22, 2026, 10:02 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of Sequential Rotavirus Vaccine Schedules

NCT01266850
View directory record Official record
Conditions
Rotavirus Infection
Interventions
Rotarix®, RotaTeq®
Biological
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
6 Weeks to 14 Weeks
Enrollment
1,384 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
13
States / cities
Oakland, California • Atlanta, Georgia • Iowa City, Iowa + 8 more
Source: ClinicalTrials.gov public record
Updated Oct 27, 2014 · Synced Sep 22, 2026, 10:02 PM EDT
Recruiting Phase 4 Interventional

Vitamin D Homeostasis in Sarcoidosis

NCT03621553
View directory record Official record
Conditions
Sarcoidosis, Vitamin D Insufficiency
Interventions
Ergocalciferol, Placebo, Calcium Citrate with Vitamin D2
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
21 Years and older
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2026
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Sep 2, 2026 · Synced Sep 22, 2026, 10:02 PM EDT
Completed Early Phase 1 Interventional

Pharmacokinetics of Oral Calcium Carbonate in Parturients

NCT06650930
View directory record Official record
Conditions
Pregnancy, Pharmacokinetics, Postpartum Hemorrhage
Interventions
Oral calcium carbonate, Oral calcium citrate
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Aug 11, 2026 · Synced Sep 22, 2026, 10:02 PM EDT
Recruiting Phase 1 Interventional

Impact of Sodium Bicarbonate on 24-hour Urine Parameters in Hypocitriuric and Uric Acid Stone Formers

NCT06335537
View directory record Official record
Conditions
Uric Acid Stones
Interventions
Potassium citrate, Sodium bicarbonate
Drug
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years to 80 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Orange, California
Source: ClinicalTrials.gov public record
Updated Jun 23, 2025 · Synced Sep 22, 2026, 10:02 PM EDT
Terminated Phase 2 Interventional Results available

Treating COVID-19 With Hydroxychloroquine (TEACH)

NCT04369742
View directory record Official record
Conditions
COVID-19
Interventions
Hydroxychloroquine (HCQ), Placebo: Calcium citrate
Drug
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years and older
Enrollment
128 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
2
States / cities
Brooklyn, New York • New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 21, 2022 · Synced Sep 22, 2026, 10:02 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Investigate the Pharmacokinetics, Safety, Tolerability, and Efficacy of AZD0780 With Ezetimibe Combinations in Healthy Adults With Elevated LDL-C.

NCT06742853
View directory record Official record
Conditions
Dyslipidemia
Interventions
AZD0780, Ezetimibe, Rosuvastatin, Bempedoic Acid, Placebo
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 75 Years
Enrollment
81 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
2
States / cities
Glendale, California • Brooklyn, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 9, 2025 · Synced Sep 22, 2026, 10:02 PM 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 3, 2023 · Synced Sep 22, 2026, 10:02 PM EDT
Completed Phase 1 Interventional

Phase 1 Study of TG02 Citrate in Patients With Advanced Hematological Malignancies

NCT01204164
View directory record Official record
Conditions
AML, ALL, Blast Crisis, MDS, Multiple Myeloma
Interventions
TG02 citrate, Carfilzomib, Dexamethasone
Drug
Lead sponsor
Tragara Pharmaceuticals, Inc.
Industry
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2016
U.S. locations
9
States / cities
Denver, Colorado • Atlanta, Georgia • Chicago, Illinois + 6 more
Source: ClinicalTrials.gov public record
Updated May 5, 2016 · Synced Sep 22, 2026, 10:02 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

To Determine the Effect of KP-001 on Rosuvastatin, Caffeine PK and the Effect of Fluvoxamine on KP-001 PK in Volunteers

NCT06821698
View directory record Official record
Conditions
Healty Volunteers
Interventions
KP-001, Rosuvastatin calcium10mg, Caffeine citrate, Fluvoxamine
Drug
Lead sponsor
Kaken Pharmaceutical
Industry
Eligibility
18 Years to 55 Years
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Glendale, California
Source: ClinicalTrials.gov public record
Updated Sep 11, 2025 · Synced Sep 22, 2026, 10:02 PM EDT
Not listed Phase 2 Interventional

Microbiota Transfer Therapy for Children and Adults With Both Pitt Hopkins Syndrome and Gastrointestinal Disorders

NCT06321796
View directory record Official record
Conditions
Pitt Hopkins Syndrome
Interventions
MTP-101P, Vancomycin, Magnesium Citrate, Antacid, Placebo MTP-101P, Placebo Vancomycin
Combination Product
Lead sponsor
Gut-Brain-Axis Therapeutics Inc.
Other
Eligibility
5 Years to 55 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Tempe, Arizona
Source: ClinicalTrials.gov public record
Updated Mar 19, 2024 · Synced Sep 22, 2026, 10:02 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Nutrition and Body Composition in Acute Lymphoblastic Leukemia

NCT01317940
View directory record Official record
Conditions
Precursor Cell Lymphoblastic Leukemia-Lymphoma, Vitamin D Deficiency
Interventions
Vitamin D and Calcium Citrate
Dietary Supplement
Lead sponsor
Children's Hospital Los Angeles
Other
Eligibility
10 Years to 29 Years
Enrollment
76 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2016
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jul 7, 2020 · Synced Sep 22, 2026, 10:02 PM EDT
Completed Phase 2 Interventional Results available

Zoledronic Acid in Preventing Osteoporosis in Patients Undergoing Donor Stem Cell Transplant

NCT00321932
View directory record Official record
Conditions
Leukemia, Lymphoma, Myelodysplastic Syndromes, Osteoporosis, Ovarian Cancer
Interventions
calcium, cholecalciferol, zoledronic acid
Dietary Supplement · Drug
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years and older
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2012
U.S. locations
2
States / cities
Minneapolis, Minnesota • Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Mar 8, 2017 · Synced Sep 22, 2026, 10:02 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Effect of Chewing a Calcium Supplement Before Fluoride Rinse on Salivary Fluoride

NCT04620252
View directory record Official record
Conditions
Dental Caries
Interventions
Inactive supplement, Tricalcium phosphate supplement, Calcium carbonate supplement, Calcium citrate supplement, Inactive supplement and fluoride mouthwash, Calcium carbonate supplement and fluoride mouthwash, Calcium citrate supplement and fluoride mouthwash
Drug
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 99 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated May 8, 2022 · Synced Sep 22, 2026, 10:02 PM EDT
Completed Not applicable Interventional

Vitamin D Supplementation in Older Women

NCT00472823
View directory record Official record
Conditions
Osteoporosis, Aging
Interventions
Vitamin D3, Calcium Citrate (Citracal)
Dietary Supplement
Lead sponsor
Creighton University
Other
Eligibility
57 Years and older · Female only
Enrollment
273 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Mar 13, 2016 · Synced Sep 22, 2026, 10:02 PM EDT
Recruiting Phase 4 Interventional

Hydroxycitrate: A Novel Therapy for Calcium Phosphate Urinary Stones

NCT06003348
View directory record Official record
Conditions
Calcium Phosphate Kidney Stones
Interventions
OHCit- standard dose, Potassium Citrate, Placebo, OHCit- low dose
Dietary Supplement · Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
21 Years to 99 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jun 1, 2026 · Synced Sep 22, 2026, 10:02 PM EDT