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Showing 1–24 of 155 matching trials from the live ClinicalTrials.gov search.
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Not listed Not applicable Interventional Accepts healthy volunteers

Vitamin D Intervention and Associated Changes in the Gut Microbiome and Vitamin D Levels in Healthy Adults

NCT05387876
View directory record Official record
Conditions
Colorectal Cancer
Interventions
Vitamin D intervention, Placebo intervention
Dietary Supplement
Lead sponsor
Baylor University
Other
Eligibility
18 Years to 79 Years
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Waco, Texas
Source: ClinicalTrials.gov public record
Updated May 23, 2022 · Synced Sep 2, 2026, 10:44 PM EDT
Completed Not applicable Interventional Results available

Effect of Vitamin D Supplementation on Inflammation and Cardiometabolic Risk Factors in Obese Adolescents

NCT01217840
View directory record Official record
Conditions
Obesity
Interventions
Drisdol (Ergocalciferol) Vitamin D2, Placebo
Drug
Lead sponsor
Stanford University
Other
Eligibility
11 Years to 17 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Nov 28, 2017 · Synced Sep 2, 2026, 10:44 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Nutritional Intervention for Age-related Muscular Function and Strength Losses-Study 2

NCT02043171
View directory record Official record
Conditions
Sarcopenia
Interventions
Placebo, HMB plus Vitamin D, Non-Exercise, Exercise
Dietary Supplement · Drug · Behavioral
Lead sponsor
Metabolic Technologies Inc.
Industry
Eligibility
60 Years and older
Enrollment
238 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2019
U.S. locations
1
States / cities
Ames, Iowa
Source: ClinicalTrials.gov public record
Updated Feb 10, 2019 · Synced Sep 2, 2026, 10:44 PM EDT
Completed Phase 2 Interventional

A Dose-finding Trial With Lu-AG09222 in Adults With Migraine Who Have Not Been Helped by Prior Preventive Treatments

NCT06323928
View directory record Official record
Conditions
Migraine
Interventions
Lu AG09222, Placebo
Drug
Lead sponsor
H. Lundbeck A/S
Industry
Eligibility
18 Years to 65 Years
Enrollment
874 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
28
States / cities
Hoover, Alabama • Carlsbad, California • Fullerton, California + 24 more
Source: ClinicalTrials.gov public record
Updated Jun 11, 2026 · Synced Sep 2, 2026, 10:44 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Rapid Response of Stem Cells and Immune Cells for Efficacy

NCT07127705
View directory record Official record
Conditions
Stem Cell Surveillance
Interventions
Placebo, Chaga Mushroom, Ginseng extract, Olive extract, Potassium Hydrogen Glucarate
Dietary Supplement
Lead sponsor
Natural Immune Systems Inc
Other
Eligibility
18 Years to 75 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Klamath Falls, Oregon
Source: ClinicalTrials.gov public record
Updated Aug 16, 2025 · Synced Sep 2, 2026, 10:44 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Functional Near-Infrared Spectroscopy and Virtual Reality Relaxation Programs for Pain Management in Patients With Cancer

NCT06456411
View directory record Official record
Conditions
Breast Carcinoma, Kidney Carcinoma, Carcinoma
Interventions
Functional Near-Infrared Spectroscopy, Questionnaire Administration, Virtual Technology Intervention, Cold Stimulation
Procedure · Other
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
106 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Apr 28, 2026 · Synced Sep 2, 2026, 10:44 PM EDT
Recruiting Phase 4 Interventional

Ketamine as a Supplement to Local Anesthesia for Minor Procedures

NCT06284473
View directory record Official record
Conditions
Pain, Procedural, Minor Laceration, Abscess
Interventions
Ketamine, Saline
Drug · Other
Lead sponsor
Loyola University
Other
Eligibility
7 Years to 70 Years
Enrollment
108 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2028
U.S. locations
1
States / cities
Maywood, Illinois
Source: ClinicalTrials.gov public record
Updated Oct 2, 2025 · Synced Sep 2, 2026, 10:44 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Reduction in Pain Intensity Following IV or Oral Pain-relieving Products

NCT02678416
View directory record Official record
Conditions
Pain
Interventions
IV Acetaminophen (Treatment A), Oral Acetaminophen (Treatment B), Placebo (Treatment C), Morphine (Treatment D)
Drug · Other
Lead sponsor
Mallinckrodt
Industry
Eligibility
18 Years to 55 Years · Male only
Enrollment
79 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Feb 4, 2020 · Synced Sep 2, 2026, 10:44 PM EDT
Recruiting Phase 3 Interventional

A Study to Evaluate the Efficacy and Safety of Inavolisib in Combination With Phesgo Versus Placebo in Combination With Phesgo in Participants With PIK3CA-Mutated HER2-Positive Locally Advanced or Metastatic Breast Cancer

NCT05894239
View directory record Official record
Conditions
Metastatic Breast Cancer
Interventions
Inavolisib, Phesgo, Placebo, Taxane-based Chemotherapy, Optional Endocrine Therapy of Investigator's Choice
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older
Enrollment
230 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2032
U.S. locations
20
States / cities
Gilbert, Arizona • Burbank, California • Corona, California + 17 more
Source: ClinicalTrials.gov public record
Updated Aug 24, 2026 · Synced Sep 2, 2026, 10:44 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Drug-drug Interaction Study of Gepotidacin

NCT04493931
View directory record Official record
Conditions
Infections, Bacterial
Interventions
Gepotidacin, Cimetidine, Rifampicin, Midazolam, Digoxin, Placebo matching to gepotidacin
Drug · Other
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 50 Years
Enrollment
64 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Las Vegas, Nevada
Source: ClinicalTrials.gov public record
Updated Mar 3, 2022 · Synced Sep 2, 2026, 10:44 PM EDT
Completed Not applicable Interventional Results available

Treadmill Exercise and GM-CSF Study to Improving Functioning in Peripheral Artery Disease (PAD)

NCT01408901
View directory record Official record
Conditions
Peripheral Arterial Disease
Interventions
Supervised Treadmill Exercise Therapy, Health education sessions (Control), granulocyte macrophage colony stimulating factor (GM-CSF)
Behavioral · Other · Drug
Lead sponsor
Northwestern University
Other
Eligibility
Not listed
Enrollment
210 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jan 20, 2020 · Synced Sep 2, 2026, 10:44 PM EDT
Completed Phase 2 Interventional Results available

Vitamin D and Prostate Cancer: A Clinical Study Enrolling Subjects Undergoing Prostatectomy

NCT02726113
View directory record Official record
Conditions
Prostate Cancer
Interventions
cholecalciferol, placebo
Drug · Other
Lead sponsor
Medical University of South Carolina
Other
Eligibility
19 Years to 90 Years · Male only
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
2
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Dec 2, 2019 · Synced Sep 2, 2026, 10:44 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Effect of Vitamin D Supplementation on Muscle Mass and Function

NCT01199926
View directory record Official record
Conditions
Obesity, Insulin Resistance, Inflammation
Interventions
Vitamin D, Placebo
Dietary Supplement · Drug
Lead sponsor
Purdue University
Other
Eligibility
18 Years to 35 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2010
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated May 14, 2015 · Synced Sep 2, 2026, 10:44 PM EDT
Active, not recruiting Phase 2 Interventional

RANKL Inhibition and Mammographic Breast Density

NCT04067726
View directory record Official record
Conditions
Dense Breasts
Interventions
Denosumab, Placebo, Calcium, Vitamin D3, Core needle biopsy, Blood draw
Drug · Procedure
Lead sponsor
Washington University School of Medicine
Other
Eligibility
40 Years and older · Female only
Enrollment
210 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Mar 30, 2026 · Synced Sep 2, 2026, 10:44 PM EDT
Completed Phase 3 Interventional

Vitamin D for Enhancing the Immune System in Cystic Fibrosis (DISC Study)

NCT01426256
View directory record Official record
Conditions
Cystic Fibrosis, Respiratory Tract Infections
Interventions
Cholecalciferol
Dietary Supplement
Lead sponsor
Emory University
Other
Eligibility
16 Years and older
Enrollment
91 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
5
States / cities
Birmingham, Alabama • Atlanta, Georgia • Iowa City, Iowa + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 12, 2017 · Synced Sep 2, 2026, 10:44 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A First-in-Human Study of AV-001 in Healthy Subjects

NCT04737486
View directory record Official record
Conditions
Covid19-associated ARDS, Covid19, ARDS
Interventions
AV-001, Placebo
Drug · Other
Lead sponsor
Vasomune Therapeutics, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 23, 2021 · Synced Sep 2, 2026, 10:44 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of a Synbiotic Supplement on Metabolic & Cognitive Outcomes Among Older Adults

NCT06845995
View directory record Official record
Conditions
Older Adults, Bioelectrical Impedance, Appetite Hormones, Metabolic Health, Body Composition Measurement, Cognitive Health
Interventions
Synbiotic supplement
Dietary Supplement
Lead sponsor
Texas Tech University
Other
Eligibility
65 Years and older
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Lubbock, Texas
Source: ClinicalTrials.gov public record
Updated Feb 24, 2025 · Synced Sep 2, 2026, 10:44 PM EDT
Active, not recruiting Phase 3 Interventional Results available

Ibrutinib Before and After Stem Cell Transplant in Treating Patients With Relapsed or Refractory Diffuse Large B-cell Lymphoma

NCT02443077
View directory record Official record
Conditions
Recurrent Diffuse Large B-Cell Lymphoma Activated B-Cell Type, Refractory Diffuse Large B-Cell Lymphoma Activated B-Cell Type
Interventions
Autologous Bone Marrow Transplantation, Autologous Hematopoietic Stem Cell Transplantation, Carmustine, Cyclophosphamide, Cytarabine, Etoposide, Ibrutinib, Laboratory Biomarker Analysis, Melphalan, Pharmacogenomic Study, Placebo Administration
Procedure · Drug · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
94 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2026
U.S. locations
280
States / cities
Anchorage, Alaska • Fairbanks, Alaska • Tucson, Arizona + 202 more
Source: ClinicalTrials.gov public record
Updated Jul 30, 2026 · Synced Sep 2, 2026, 10:44 PM EDT
Completed Early Phase 1 Interventional Results available

The INCREASE Study - Delaying the Onset of Alzheimer's Symptomatic Expression

NCT02849639
View directory record Official record
Conditions
Alzheimer's Disease, Dementia
Interventions
Placebo, Medication Therapy Management (MTM), Scopolamine patch
Other · Drug
Lead sponsor
Daniela Moga
Other
Eligibility
65 Years to 101 Years
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Jul 18, 2023 · Synced Sep 2, 2026, 10:44 PM EDT
Completed Phase 1 Interventional

Effects of Treating Vitamin D Deficiency in Poorly Controlled Type 2 Diabetes

NCT01855321
View directory record Official record
Conditions
Type 2 Diabetes
Interventions
Vitamin D, Placebo
Drug
Lead sponsor
University of Florida
Other
Eligibility
30 Years to 65 Years
Enrollment
76 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jun 25, 2015 · Synced Sep 2, 2026, 10:44 PM EDT
Active, not recruiting Phase 2 Interventional

Romosozumab to Improve Bone Mineral Density and Architecture in Chronic SCI

NCT04232657
View directory record Official record
Conditions
Spinal Cord Injury (=3 Years), Sublesional Bone Loss Secondary to SCI
Interventions
Romosozumab, Denosumab, Placebo
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years to 65 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
2
States / cities
West Orange, New Jersey • The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Apr 19, 2026 · Synced Sep 2, 2026, 10:44 PM EDT
Completed Not applicable Interventional Results available

Effect of Chronic ACE and DPP4 Inhibition on Blood Pressure

NCT02130687
View directory record Official record
Conditions
Type 2 Diabetes Mellitus, Hypertension
Interventions
Placebo, Sitagliptin, Aprepitant, Mixed Meal Test (MMT)
Drug · Other
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 80 Years
Enrollment
106 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2020
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Mar 1, 2022 · Synced Sep 2, 2026, 10:44 PM EDT
Completed Phase 4 Interventional Results available

Acute Psychotherapy for Bipolar II Depression

NCT01133821
View directory record Official record
Conditions
Bipolar Disorder, Depression
Interventions
IPSRT plus placebo (IPSRT-PLA), IPSRT plus quetiapine
Drug
Lead sponsor
Holly Swartz
Other
Eligibility
18 Years to 65 Years
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 8, 2018 · Synced Sep 2, 2026, 10:44 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Effects of Oral vs. Non-oral Contraceptives on the GH/IGF-1 Axis

NCT02367833
View directory record Official record
Conditions
Bone; Disorder, Development and Growth
Interventions
Combined Oral Contraceptive, Transdermal Contraceptive, Contraceptive Vaginal Ring
Drug
Lead sponsor
Penn State University
Other
Eligibility
18 Years to 30 Years · Female only
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
University Park, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 8, 2020 · Synced Sep 2, 2026, 10:44 PM EDT