Clinical trials: Vitamin D
Pregnancy, Vitamin D Deficiency
Trial of Vitamin D Supplements to Raise Calcidiol Levels of Pregnant Women in Mongolia
A double-blind randomized, placebo-controlled trial comparing the impact of 600 IU, 2000 IU, or 4000 IU of Vitamin D3 on third trimester 25(OH)D levels and change from baseline.
- Trial name
- NCT02395081
- Testing
- 600 IU Vitamin D3 in prenatal vitamin, 2000 IU Vitamin D3 in prenatal vitamin, 4000 IU Vitamin D3 in prenatal vitamin
- Where
- Mongolia
- Volunteers
- 360 people, healthy volunteers welcome
- Sponsor
- Brigham and Women's Hospital
Metastatic Colorectal Cancer
Study of Vitamin D in Untreated Metastatic Colorectal Cancer
This is a prospective, randomized, double-blind phase II trial to evaluate the efficacy and safety of two doses of vitamin D supplementation in combination with standard chemotherapy in participants with previously-untreated…
- Trial name
- NCT01516216
- Testing
- FOLFOX + bevacizumab, Vitamin D
- Where
- 18 sites in United States
- Volunteers
- 139 people
- Sponsor
- Dana-Farber Cancer Institute
Hypovitaminosis D
To Study the Nutri-Genomic Response of Vit-D Supplementation in African-Americans
Three hundred thirty (330) overweight, pre-hypertensive/controlled hypertensive, African-American participants will be enrolled in a 8 week study to assess the effect of two administrations of Vitamin D3 on Vitamin D serum…
- Trial name
- NCT02802449
- Testing
- 25 Hydroxy- Vitamin D3 [25 (OH) D3]
- Where
- United States
- Volunteers
- 330 people, healthy volunteers welcome
- Sponsor
- Charles Drew University of Medicine and Science
Male Prisoner
Monocentric Randomized Study, Assessing the Interests of the Determination of Vitamin D in Prison Population. (Vitamine D)
The study will be proposed to man entering the prison of La Roche sur Yon. Participants will be randomized into two arms: one arm realize a dosage of vitamin D at the entrance and 6 months after the entry and the second arm will…
- Trial name
- NCT02044133
- Testing
- Dosage Vitamine D
- Where
- France
- Volunteers
- 54 people, healthy volunteers welcome
- Sponsor
- Centre Hospitalier Departemental Vendee
Chronic Kidney Disease
Vascular Reactivity in Chronic Kidney Disease (CKD) Patients Receiving Paricalcitol Versus Placebo
This research is studying how Vitamin D may affect blood vessels reaction to stress and blood levels of substances that may increase blockages in the blood vessels in chronic kidney disease (CKD) patients.
- Trial name
- NCT00915876
- Testing
- Paricalcitol
- Where
- United States
- Volunteers
- 41 people
- Sponsor
- Amy Barton Pai
Hypovitaminosis D
Rapid Normalization of Vitamin D in Critically Ill Children: A Phase II Dose Evaluation Randomized Controlled Trial
Documented roles for vitamin D in calcium homeostasis, cardiovascular and respiratory health, inflammation, innate immunity, and neuromuscular function have led to the hypothesis that deficiency might represent a modifiable risk…
- Trial name
- VITdAL-PICU (NCT02452762)
- Testing
- Vitamin D3
- Where
- 4 sites in Austria, Canada and 1 more
- Volunteers
- 67 people
- Sponsor
- Children's Hospital of Eastern Ontario
Chronic Obstructive Pulmonary Disease (COPD)
Magnesium is Associated With QoL in COPD: A Cross-sectional Study
The aim of this study was to investigate the associations between serum concentrations of vitamin D, Magnesium and Calcium in Chronic obstructive pulmonary disease patients and the potential impact of these parameters on lung…
- Trial name
- NCT01564953
- Where
- Denmark
- Volunteers
- 143 people
- Sponsor
- University of Aarhus
Chronic Obstructive Pulmonary Disease (COPD)
Effect of Supplemental Vitamin D on Skeletal Muscle Function in Chronic Obstructive Pulmonary Disease (COPD) Patients
The purpose of this study is to determine whether or not vitamin D supplementation can improve physical performance in persons with severe chronic obstructive pulmonary disease (COPD).
- Trial name
- NCT00914810
- Testing
- Vitamin D (cholecalciferol)
- Where
- United States
- Volunteers
- 39 people
- Sponsor
- Minneapolis Veterans Affairs Medical Center
Vitamin D Deficiency, Vitamin D Insufficiency
Evaluating the Effect of SOLIUS UV Light Source in Improving Vitamin D Status
The aim of this study is to evaluate the safety and effectiveness of the SOLIUS System in improving serum levels of 25-hydroxyvitamin D in vitamin D deficient/ insufficient adults of various skin types.
- Trial name
- NCT04780776
- Testing
- UVB treatment
- Where
- United States
- Volunteers
- 69 people, healthy volunteers welcome
- Sponsor
- Boston University
Chronic Kidney Disease Stage 3 and 4
Vitamin D Supplement Study for Stage Three and Four Chronic Kidney Disease (CKD) Patients
The purpose of this study is to examine the effectiveness of vitamin D3 versus vitamin D2 in raising vitamin D levels and suppressing parathyroid hormone levels in patients with kidney disease who are not on dialysis.
- Trial name
- UPGRADE (NCT01173848)
- Testing
- Ergocalciferol, Cholecalciferol
- Where
- United States
- Volunteers
- 19 people
- Sponsor
- The Cleveland Clinic
Secondary Hyperparathyroidism
Etelcalcetide to Treat Secondary Hyperparathyroidism in Hemodialysis Patients With Chronic Kidney Disease-Mineral and Bone Disorder
The purpose of this study is to evaluate the effect of thrice weekly intravenous (IV) administration of etelcalcetide in the treatment of secondary hyperparathyroidism (SHPT) in hemodialysis patients with chronic kidney…
- Trial name
- NCT01414114
- Testing
- Etelcalcetide
- Volunteers
- 37 people
- Sponsor
- KAI Pharmaceuticals
Vitamin D Deficiency
Treatment of Vitamin D Insufficiency
The purpose of this study is to answer the following questions: Does vitamin D increase calcium absorption, bone mass and muscle mass and function in women past menopause who have mildly low vitamin D levels? Do these benefits…
- Trial name
- NCT00933244
- Testing
- High Dose Vitamin D3, Low Dose Vitamin D3
- Where
- United States
- Volunteers
- 230 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison
Respiratory Infection
Human Lung Responses to Respiratory Pathogens
For most individuals, the lung has a remarkable ability to deal with exposure to a variety of inhaled bacteria. Some individuals, however, do have recurrent bacterial infections, usually in the form of acute or chronic bronchitis…
- Trial name
- NCT01967628
- Testing
- Vitamin D3 (cholecalciferol)
- Where
- United States
- Volunteers
- 98 people, healthy volunteers welcome
- Sponsor
- University of Iowa
Hypovitaminosis D
Comparing a Novel Phototherapy Kiosk to Oral Vitamin D Supplementation
The purpose of this project is to demonstrate the capability of a standing phototherapy kiosk (SPK) to stimulate cutaneous vitamin D3 and subsequent production of 25 Hydroxyvitamin (OH) D safely and as efficiently as an oral…
- Trial name
- NCT04556136
- Testing
- Standing Phototherapy Kiosk, D3 Oral supplement
- Where
- United States
- Volunteers
- 106 people, healthy volunteers welcome
- Sponsor
- Madigan Army Medical Center
Neonatal Sepsis, Preterm Infants
Effect of Vitamin D as Adjuvant Therapy in Preterm Infants With Neonatal Sepsis
The goal of this clinical trial is to learn the effect of vitamin D as an adjunctive therapy for preterm neonates with sepsis measured by the outcomes, which are sepsis score and C-reactive protein after 7 days.
- Trial name
- NCT07245277
- Testing
- Vitamin D
- Where
- 2 sites in Indonesia
- Volunteers
- 78 people
- Sponsor
- Universitas Padjadjaran
HIV-1 Infection
High Dose Vitamin D and Calcium for Bone Health in Individuals Initiating HAART
This study was done with people who were infected with HIV and needed to start treatment for their HIV disease. The purpose of this study is to see if taking vitamin D and calcium will help prevent the bone loss that sometimes…
- Trial name
- NCT01403051
- Testing
- EFV/FTC/TDF, Calcium Carbonate, Vitamin D3
- Where
- 39 sites in United States, Puerto Rico
- Volunteers
- 167 people
- Sponsor
- Advancing Clinical Therapeutics Globally for HIV/AIDS and Other Infections
Cardiovascular Disease, Chronic Kidney Disease
Vascular Risk After Kidney Transplantation
Hypothesis: Nontraditional risk factors, such as inflammation, vitamin D deficiency, elevated PTH, insulin resistance, homocysteine, or uric acid, contribute to cardiovascular disease progression after kidney transplant.
- Conditions
- Cardiovascular Disease, Chronic Kidney Disease, Diabetes, Vitamin D Deficiency
- Trial name
- NCT00374595
- Where
- United States
- Volunteers
- 338 people
- Sponsor
- University of Nebraska
Secondary Hyperparathyroidism Due to Renal Causes, Chronic Kidney Diseases
Safety, Efficacy, PK and PD of CTAP101 (Calcifediol) ER Capsules for SHPT in HD Patients VDI
Safety, Efficacy, PK and PD of CTAP101 (calcifediol) ER Capsules for SHPT in HD Patients VDI
- Conditions
- Secondary Hyperparathyroidism Due to Renal Causes, Chronic Kidney Diseases, Vitamin D Deficiency, Stage 5 Chronic Kidney Disease
- Trial name
- NCT03602261
- Testing
- Calcifediol Oral Capsule
- Where
- 18 sites in United States
- Volunteers
- 44 people
- Sponsor
- OPKO Health, Inc.
HIV Infections
Vitamin D Supplementation in HIV Youth
The purpose of this study is to determine the correct dose of Vitamin D to give to prevent HIV related complications.
- Trial name
- NCT01523496
- Testing
- Vitamin D control dose, Vitamin D supplementation-
- Where
- 2 sites in United States
- Volunteers
- 190 people, healthy volunteers welcome
- Sponsor
- University Hospitals Cleveland Medical Center
Obesity, Overweight
Effect of Calcium + Vitamin D Supplementation on Weight Management in Very-low Calcium Consumers
The purpose of the study is to determine whether calcium plus vitamin D supplementation is conducive to weight and fat loss during energy restriction in very-low calcium consumers.
- Trial name
- NCT01447433
- Testing
- Calcium Carbonate, Energy restriction
- Where
- China
- Volunteers
- 53 people, healthy volunteers welcome
- Sponsor
- Changhai Hospital