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Showing 1–24 of 134 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Calcium Antacid Clear all
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 23, 2013 · Synced Sep 12, 2026, 8:16 PM EDT
Completed Phase 3 Interventional Results available

Effect of Secukinumab on Radiographic Progression in Ankylosing Spondylitis as Compared to GP2017 (Adalimumab Biosimilar)

NCT03259074
View directory record Official record
Conditions
Ankylosing Spondylitis
Interventions
Placebo, GP2017 (adalimumab biosimilar), AIN457 150 mg
Biological
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
859 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
19
States / cities
Mesa, Arizona • Escondido, California • La Mesa, California + 16 more
Source: ClinicalTrials.gov public record
Updated Aug 20, 2023 · Synced Sep 12, 2026, 8:16 PM EDT
Terminated Phase 3 Interventional

Chemoprevention of Colorectal Adenomas

NCT00486512
View directory record Official record
Conditions
Adenomatous Polyps
Interventions
0.5 mg calcitriol (1a -25-dihydroxycholecalciferol), 75 mg acetylsalicylic acid (ASA) + 1250 mg calcium carbonate (CaCO3), placebo to 0.5 mg calcitriol (1a -25-dihydroxycholecalciferol), placebo to 75 mg acetylsalicylic acid (ASA) + 1250 mg calcium carbonate (CaCO3), Colonoscopy
Drug · Procedure
Lead sponsor
Colotech A/S
Industry
Eligibility
40 Years to 75 Years
Enrollment
350 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
24
States / cities
Huntsville, Alabama • San Diego, California • Clearwater, Florida + 20 more
Source: ClinicalTrials.gov public record
Updated Sep 2, 2020 · Synced Sep 12, 2026, 8:16 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Effects of Carbohydrate in Diet and Supplements on the Gastrointestinal Tolerability of LIK066

NCT03198767
View directory record Official record
Conditions
Obesity
Interventions
LIK066, Carbohydrate 50%, Carbohydrate 25%, Carbohydrate 8%, Carbohydrate 0%, Psyllium, Calcium carbonate
Drug · Dietary Supplement
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years to 65 Years
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Jan 4, 2021 · Synced Sep 12, 2026, 8:16 PM EDT
Active, not recruiting Phase 1 Interventional

ADP-A2M4CD8 as Monotherapy or in Combination With Either Nivolumab or Pembrolizumab in HLA-A2+ Subjects With MAGE-A4 Positive Tumors (SURPASS)

NCT04044859
View directory record Official record
Conditions
Endometrial Cancer, Esophageal Cancer, Esophagogastric Junction (EGJ), Gastric (Stomach) Cancer, Head and Neck Cancer, Melanoma, Ovarian Cancer, Non-small Cell Lung (NSCLC), Urothelial Cancer
Interventions
Autologous genetically modified ADP-A2M4CD8 cells alone or in combination with nivolumab every four weeks or pembrolizumab every 6 weeks
Genetic
Lead sponsor
USWM CT, LLC
Industry
Eligibility
18 Years to 75 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2037
U.S. locations
9
States / cities
Orlando, Florida • Boston, Massachusetts • St Louis, Missouri + 6 more
Source: ClinicalTrials.gov public record
Updated Aug 11, 2026 · Synced Sep 12, 2026, 8:16 PM EDT
Completed Phase 2 Interventional

The Effects of Sevelamer Carbonate on Diabetic Nephropathy

NCT01493050
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Apr 8, 2014 · Synced Sep 12, 2026, 8:16 PM EDT
Completed Not applicable Interventional Results available

Vitamin D, Insulin Resistance, and Cardiovascular Disease

NCT00736632
View directory record Official record
Conditions
Vitamin D Deficiency, Insulin Resistance, Type 2 Diabetes Mellitus, Cardiovascular Disease, Hypertension
Interventions
Vitamin D3, Placebo
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
25 Years to 80 Years
Enrollment
125 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2019
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Feb 9, 2020 · Synced Sep 12, 2026, 8:16 PM 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 4, 2020 · Synced Sep 12, 2026, 8:16 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Alpena Otago Telehealth Program

NCT04664166
View directory record Official record
Conditions
Geriatrics, Exercise, Telemedicine
Interventions
Alpena Otago Telehealth Program
Other
Lead sponsor
University of Michigan
Other
Eligibility
60 Years and older
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Flint, Michigan
Source: ClinicalTrials.gov public record
Updated Jan 5, 2022 · Synced Sep 12, 2026, 8:16 PM EDT
Recruiting Phase 3 Interventional

Trial to Evaluate the Efficacy and Safety of LYT-100 (Deupirfenidone) Compared to Pirfenidone in Adults With Idiopathic Pulmonary Fibrosis (IPF)

NCT07284602
View directory record Official record
Conditions
Idiopathic Pulmonary Fibrosis (IPF)
Interventions
Deupirfenidone, Pirfenidone (PFD)
Drug
Lead sponsor
PureTech
Industry
Eligibility
40 Years and older
Enrollment
1,100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
10
States / cities
Palm Spring, California • Redding, California • North Dartmouth, Massachusetts + 7 more
Source: ClinicalTrials.gov public record
Updated Sep 2, 2026 · Synced Sep 12, 2026, 8:16 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Clinical Efficacy of 10% Arginine Bicarbonate Prophylaxis Paste

NCT01072188
View directory record Official record
Conditions
Hypersensitivity
Interventions
Arginine/Calcium Carbonate, Nupro - Fluoride Free
Device
Lead sponsor
Colgate Palmolive
Industry
Eligibility
18 Years to 70 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Langhorne, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 13, 2011 · Synced Sep 12, 2026, 8:16 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effect of Calcium on Gleevec Pharmacokinetics (PK) in Healthy Volunteers

NCT00732784
View directory record Official record
Conditions
Healthy
Interventions
Imatinib mesylate, calcium carbonate
Drug · Dietary Supplement
Lead sponsor
Jan Beumer
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2012
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 17, 2013 · Synced Sep 12, 2026, 8:16 PM EDT
Active, not recruiting Phase 3 Interventional

Ropeginterferon Alfa-2b (P1101) vs. Anagrelide in Essential Thrombocythemia Patients With Hydroxyurea Resistance or Intolerance

NCT04285086
View directory record Official record
Conditions
Essential Thrombocythemia
Interventions
Ropeginterferon alfa-2b, Anagrelide
Biological · Drug
Lead sponsor
PharmaEssentia
Industry
Eligibility
18 Years and older
Enrollment
174 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2029
U.S. locations
4
States / cities
Scottsdale, Arizona • St Louis, Missouri • Houston, Texas + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 21, 2026 · Synced Sep 12, 2026, 8:16 PM 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 18, 2011 · Synced Sep 12, 2026, 8:16 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Antacid Interaction Study

NCT01982201
View directory record Official record
Conditions
Healthy
Interventions
Lesinurad 400 mg, Tums 500 mg and 750 mg, MINTOX 10 mL
Drug
Lead sponsor
Ardea Biosciences, Inc.
Industry
Eligibility
18 Years to 55 Years · Male only
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Kalamazoo, Michigan
Source: ClinicalTrials.gov public record
Updated May 19, 2014 · Synced Sep 12, 2026, 8:16 PM 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 29, 2019 · Synced Sep 12, 2026, 8:16 PM 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 29, 2023 · Synced Sep 12, 2026, 8:16 PM EDT
Active, not recruiting Phase 2 Interventional Accepts healthy volunteers

PhytoSERM to Prevent Menopause Associated Decline in Brain Metabolism and Cognition

NCT05664477
View directory record Official record
Conditions
Menopause, Cognitive Change, Brain Disorder, Metabolic
Interventions
PhytoSERM, Placebo
Dietary Supplement · Drug
Lead sponsor
Roberta Brinton
Other
Eligibility
45 Years to 60 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
2
States / cities
Tucson, Arizona • New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 12, 2026 · Synced Sep 12, 2026, 8:16 PM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers

Clinical Trial of Vitamin D3 to Reduce Cancer Risk in Postmenopausal Women

NCT01052051
View directory record Official record
Conditions
Cancer
Interventions
Vitamin D3, Calcium carbonate
Dietary Supplement
Lead sponsor
Creighton University
Other
Eligibility
55 Years and older · Female only
Enrollment
2,303 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2015
U.S. locations
1
States / cities
Fremont, Nebraska
Source: ClinicalTrials.gov public record
Updated Jul 23, 2019 · Synced Sep 12, 2026, 8:16 PM EDT
Completed Phase 3 Interventional Results available

Calcium and Vitamin D to Optimize Bone Mass in Boys With Risperidone-induced Hyperprolactinemia

NCT00799383
View directory record Official record
Conditions
Risperidone-induced Hyperprolactinemia
Interventions
Calcium and Vitamin D, Placebo
Drug · Other
Lead sponsor
Chadi A. Calarge
Other
Eligibility
5 Years to 17 Years · Male only
Enrollment
47 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2014
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Dec 25, 2017 · Synced Sep 12, 2026, 8:16 PM EDT
Completed Phase 3 Interventional Results available

A Double-Blind, Placebo-Controlled Trial of Anti-Aging, Pro-Autophagy Effects of Metformin in Adults With Prediabetes

NCT03309007
View directory record Official record
Conditions
PreDiabetes, Aging
Interventions
Metformin, Placebo Oral Tablet
Drug
Lead sponsor
University of New Mexico
Other
Eligibility
30 Years to 70 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated Dec 10, 2023 · Synced Sep 12, 2026, 8:16 PM 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 8, 2018 · Synced Sep 12, 2026, 8:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Vitamin D and Calcium Study

NCT00857831
View directory record Official record
Conditions
Spinal Cord Injury
Interventions
Vitamin D and Calcium
Dietary Supplement
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
18 Years to 75 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2012
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Oct 2, 2012 · Synced Sep 12, 2026, 8:16 PM EDT
Completed Phase 3 Interventional Results available

Effect of Zoledronic Acid on Chemotherapy Induced Bone Loss

NCT00352846
View directory record Official record
Conditions
Non-Hodgkin's Lymphoma, Lymphoma
Interventions
Zoledronic Acid, Vitamin D, Calcium Carbonate
Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
135 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2011
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 1, 2013 · Synced Sep 12, 2026, 8:16 PM EDT