Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Oct 20, 2026, 4:00 PM EDT

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Showing 1–24 of 157 matching trials from the live ClinicalTrials.gov search.
Conditions
Healthy Participants
Interventions
ACP-196, Calcium carbonate, Omeprazole, Rifampin
Drug
Lead sponsor
Acerta Pharma BV
Industry
Eligibility
18 Years to 65 Years
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
Tempe, Arizona
Completed Phase 1Phase 2 Interventional Results available

Vitamin D HIV Study on Postmenopausal Women

NCT01375010
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
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
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Nutrition and Body Composition in Acute Lymphoblastic Leukemia

NCT01317940
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
Conditions
Aneurysm, Aneurysm, Intracranial
Interventions
Surpass Elite with Guardian Flow Diverter System
Device
Lead sponsor
Stryker Neurovascular
Industry
Eligibility
18 Years to 80 Years
Enrollment
183 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2031
U.S. locations
10
States / cities
Tucson, Arizona • Davis, California • Palo Alto, California + 7 more
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
Conditions
Kidney Stone, Kidney Calculi, Urolithiasis, Urolithiasis, Calcium Oxalate, Nephrolithiasis, Nephrolithiasis, Calcium Oxalate, Oxalate Urolithiasis, Oxaluria
Interventions
Low oxalate fixed diets pre-colonization, Moderately high oxalate fixed diets pre-colonization, Colonization with Oxalobacter formigenes, Low oxalate fixed diets post-colonization, Moderately high oxalate fixed diets post-colonization
Dietary Supplement
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 80 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2031
U.S. locations
2
States / cities
Birmingham, Alabama • Dallas, Texas
Conditions
Diabetic Nephropathy
Interventions
Sevelamer Carbonate, calcium carbonate
Drug
Lead sponsor
Gary Striker
Other
Eligibility
18 Years and older
Enrollment
117 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
2
States / cities
New York, New York
Conditions
Type 2 Diabetes, Diabetes Mellitus, Type 2
Interventions
Tirzepatide
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years and older
Enrollment
152 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
32
States / cities
Tempe, Arizona • Corona, California • Gardena, California + 28 more
Conditions
Atrial Fibrillation
Interventions
Ionic Calcium, Calcium Carbonate
Dietary Supplement
Lead sponsor
National University of Natural Medicine
Other
Eligibility
55 Years to 75 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Portland, Oregon
Conditions
Healthy
Interventions
Nilotinib Hydrochloride, calcium carbonate
Drug · Dietary Supplement
Lead sponsor
Jan Beumer
Other
Eligibility
18 Years and older
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2011
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Conditions
Hydration
Interventions
Nuun Sport Drink, Control
Dietary Supplement
Lead sponsor
University of Memphis
Other
Eligibility
18 Years to 45 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Memphis, Tennessee
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Safety and Immunogenicity of Sequential Rotavirus Vaccine Schedules

NCT01266850
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
Conditions
B Acute Lymphoblastic Leukemia, B Lymphoblastic Lymphoma, Central Nervous System Leukemia, Mixed Phenotype Acute Leukemia, Testicular Leukemia
Interventions
Biospecimen Collection, Blinatumomab, Bone Marrow Aspiration, Bone Marrow Biopsy, Bone Scan, Calaspargase Pegol, Computed Tomography, Cyclophosphamide, Cytarabine, Daunorubicin Hydrochloride, Dexamethasone, Doxorubicin Hydrochloride, Inotuzumab Ozogamicin, Leucovorin Calcium, Magnetic Resonance Imaging, Mercaptopurine, Methotrexate, Pegaspargase, Positron Emission Tomography, Prednisolone, Prednisone, Questionnaire Administration, Radiation Therapy, Thioguanine, Vincristine Sulfate
Procedure · Biological · Drug + 2 more
Lead sponsor
Children's Oncology Group
Network
Eligibility
365 Days to 25 Years
Enrollment
5,951 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2032
U.S. locations
203
States / cities
Birmingham, Alabama • Mobile, Alabama • Anchorage, Alaska + 155 more
Conditions
Chronic Kidney Disease
Interventions
1500 mg/d elemental calcium as calcium carbonate, Placebo
Dietary Supplement
Lead sponsor
Indiana University
Other
Eligibility
35 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Indianapolis, Indiana
Conditions
Pregnancy Prevention
Interventions
Levonorgestrel 1.5mg, Meloxicam 15 mg, Placebo
Drug · Other
Lead sponsor
InnovaGyn, Inc.
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
Raleigh, North Carolina
Completed No phase listed Observational

SURPASS Impella 5.5 Study

NCT05100836
Conditions
Cardiogenic Shock, Acute Decompensated Heart Failure
Interventions
Impella 5.5
Device
Lead sponsor
Abiomed Inc.
Industry
Eligibility
18 Years and older
Enrollment
1,017 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
15
States / cities
Los Angeles, California • Orlando, Florida • Tampa, Florida + 11 more
Completed Not applicable Interventional Accepts healthy volunteers

Understanding Effects of Calcium on the Gut-Bone Axis

NCT06383117
Conditions
Healthy, Adult, Calcium, Bone Resorption, Endocrine; Obesity
Interventions
Calcium carbonate, Placebo Control
Dietary Supplement
Lead sponsor
University of Georgia
Other
Eligibility
18 Years to 45 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Athens, Georgia
Conditions
Bariatric Surgery Candidate
Interventions
AquaVanta Chewable Tablet, Flinstones Complete, Nature Made Calcium Softgels, Twin Labs Iron Caps, Rexall Vitamin B12 Tablet
Dietary Supplement
Lead sponsor
Yasoo Health
Industry
Eligibility
18 Years to 65 Years
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
1
States / cities
Baltimore, Maryland
Completed Not applicable Interventional Accepts healthy volunteers

Analysis of MicroBial Metabolites After Eating Refined Food

NCT04308473
Conditions
Dietary Habits
Interventions
Ultra-processed Food Meal, Whole Food Meal
Other
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years and older
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2026
U.S. locations
1
States / cities
Cleveland, Ohio
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
Conditions
Aneurysm, Intracranial
Interventions
Surpass Evolve Flow Diverter System
Device
Lead sponsor
Stryker Neurovascular
Industry
Eligibility
18 Years to 80 Years
Enrollment
248 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2028
U.S. locations
32
States / cities
Phoenix, Arizona • Tucson, Arizona • Los Angeles, California + 27 more
Conditions
Autism Spectrum Disorder, Gastro-Intestinal Disorder, Constipation, Diarrhea
Interventions
MTP-101P, Vancomycin, Miralax, Antacid, Placebo MTP-101P, Placebo Vancomycin
Combination Product
Lead sponsor
Gut-Brain-Axis Therapeutics Inc.
Other
Eligibility
4 Years to 18 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Tempe, Arizona
Conditions
Chronic Kidney Disease
Interventions
Calcium acetate oral solution (COS), Sevelamer carbonate
Drug
Lead sponsor
Fresenius Medical Care North America
Industry
Eligibility
18 Years and older
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
4
States / cities
New Haven, Connecticut • North Haven, Connecticut • New York, New York