Clinical trials: Vitamin D3
Female Hormone Profile
Acute Vitamin D Supplementation on Testosterone in Females
Participation will take place over two visits to the Clinical Exercise Research Center (CERC) at the University of Southern California Health Sciences Campus.
- Trial name
- NCT06610968
- Testing
- Vitamin D (Cholecalciferol )
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- University of Southern California
Asthma Acute, Allergic Rhinitis
Immune Nutrition in Pediatric Respiratory Allergy
Respiratory allergic diseases, namely asthma and allergic rhinitis (AR), are among the most common chronic pediatric conditions with prevalence continuing to rise over last decades and are leading healthcare costs.
- Trial name
- INAPRA (NCT07308288)
- Testing
- AllergySTOP
- Where
- Italy
- Volunteers
- 40 people
- Sponsor
- Federico II University
Chronic Obstructive Pulmonary Disease
Vitamin D Supplementation in Patients With COPD
Vitamin D has an immunomodulatory role. the aim of the present study is to assess the effect of vitamin D supplementation on exacerbation rate of COPD patient with a vitamin D deficiency.
- Trial name
- PRECOVID (NCT02122627)
- Testing
- Vitamin D
- Where
- 2 sites in Netherlands
- Volunteers
- 158 people
- Sponsor
- Amsterdam UMC, location VUmc
Insulin Resistance, Insulin Sensitivity
Calcium, Vitamin D and Metformin to Treat Insulin Resistance in Obese African American Adolescent Females
This is a feasibility study to examine the treatment with Metformin, vitamin D with calcium supplement for insulin resistance in obese, black, female teens.
- Conditions
- Insulin Resistance, Insulin Sensitivity, Obesity, Vitamin D Deficiency
- Trial name
- NCT01107808
- Testing
- Calcium and Vit D, Metformin, Vit D and Calcium
- Volunteers
- healthy volunteers welcome
- Sponsor
- University of Alabama at Birmingham
Hypersensitivity
DBPC-Dose-finding-trial of Vitamin D3 for SCIT in Birch Pollen Allergic Patients.
Low Vitamin D3 (VD3) levels have been reported to be associated with the risk of allergic diseases like asthma. VD3 has been demonstrated in vitro, ex vivo and in animal models to program the immune system towards…
- Trial name
- BM4SIT (NCT02686827)
- Testing
- Paricalcitol
- Where
- Netherlands
- Volunteers
- 44 people, healthy volunteers welcome
- Sponsor
- Laurian Jongejan
Iron Deficiency, Anemia; Deficiency, Nutritional, With Poor Iron Absorption
A Study to Investigate the Effect of Vitamin D3 Supplementation on Iron Status in Iron Deficient Women
Iron is one of the most vital elements in humans as it plays a role in physiological functions such as transferring and storing oxygen, transporting electrons and catalysing numerous reactions, from oxidative metabolism to…
- Conditions
- Iron Deficiency, Anemia; Deficiency, Nutritional, With Poor Iron Absorption, Vitamin D Deficiency
- Trial name
- NCT02714361
- Testing
- Vitamin D3 supplement
- Where
- United Kingdom
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- University of Chester
Muscle Weakness
The Effect of Alfacalcidol on Muscle Strength in Elderly Indonesian Women : A Randomized Controlled Trial
The age-related increase in falls is strongly associated with a decline in muscle strength by the mechanism of sarcopenia. There has been great interest in developing approaches to counteract the effects of sarcopenia, and…
- Trial name
- NCT02327091
- Testing
- alfacalcidol
- Where
- Indonesia
- Volunteers
- 122 people, healthy volunteers welcome
- Sponsor
- Universitas Indonesia
Vitamin D Deficiency
Vitamin D Levels Following Topical Application of Vitamin D Ointment
This is a pre-post open label trial to assess the change in Vitamin D blood levels following treatment with three doses of topical Vitamin D3 in subjects with existing Vitamin D deficiency.
- Trial name
- VITD-001 (NCT02676674)
- Testing
- Dose 1, Dose 2
- Where
- United States
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- University of Minnesota
Chronic Kidney Disease, Hyperparathyroidism, Secondary
Extension Study of CTAP101-CL-3001 or CTAP101-CL-3002
This extension study of subjects previously enrolled in studies CTAP101-CL-3001 or CTAP101-CL-3002 allows long term evaluation of the safety and efficacy of CTAP101 Capsules in reducing elevated intact parathyroid hormone (iPTH)…
- Conditions
- Chronic Kidney Disease, Hyperparathyroidism, Secondary, Vitamin D Deficiency
- Trial name
- NCT02282813
- Testing
- CTAP101 Capsules, Calcitriol, Doxercalciferol
- Volunteers
- 298 people
- Sponsor
- OPKO Health, Inc.
Crohn Disease, Vitamin D Deficiency
Effects of Supplementation of Vitamin D in Patients With Crohn's Disease
Thus, the aim of the current study is to assess the influence of vitamin D deficiency and, consequently, of serum calcium deficiency in the body composition, muscular activity, bone mineral density, fatigue, and exercise…
- Conditions
- Crohn Disease, Vitamin D Deficiency, Fatigue, Sarcopenia
- Trial name
- NCT02704624
- Testing
- Vitamin D
- Where
- Brazil
- Volunteers
- 110 people
- Sponsor
- Federal University of Juiz de Fora
Vitamin D Deficiency, Injuries
Vitamin D Status Among Competitive Female Gymnast and Swimmers After Winter Time
As indoor athletes, competitive gymnasts and swimmers can face the problem of a potential vitamin D deficiency. In the last decades, indoor sports participants have been faced with the problem of an institutionalized lifestyle…
- Conditions
- Vitamin D Deficiency, Injuries, Cardiovascular Risk Factor, Nutritional Deficiency
- Trial name
- NCT03584256
- Where
- Slovenia
- Volunteers
- 31 people
- Sponsor
- University of Ljubljana
Food Allergy, Eczema
The Cork BASELINE Birth Cohort Study
The Departments of Paediatrics and Child Health, Obstetrics/Gynaecology and Nutritional Sciences, University College Cork, and the Department of Dermatology, Trinity College, Dublin have a unique and urgent opportunity to form a…
- Conditions
- Food Allergy, Eczema, Obesity
- Trial name
- BASELINE (NCT01498965)
- Where
- Ireland
- Volunteers
- 2,185 people, healthy volunteers welcome
- Sponsor
- National Children's Research Centre, Ireland
Vitamin D Deficiency
Vitamin D During Pregnancy
Vitamin D insufficiency is common globally. Pregnant women, who need an increased supply of this vitamin for the proper development of the fetus, are a significant risk group.
- Trial name
- NCT01589783
- Testing
- completion of a questionnaire, Blood draw
- Where
- Israel
- Volunteers
- 764 people, healthy volunteers welcome
- Sponsor
- Hadassah Medical Organization
Prostate Cancer
Calcitriol, Mitoxantrone, and Prednisone in Treating Patients With Metastatic Prostate Cancer
RATIONALE: Calcitriol may cause prostate cancer cells to look more like normal cells, and to grow and spread more slowly. Drugs used in chemotherapy, such as mitoxantrone and prednisone, work in different ways to stop the growth…
- Trial name
- NCT00182741
- Testing
- calcitriol, mitoxantrone hydrochloride, prednisone
- Where
- United States
- Volunteers
- 19 people
- Sponsor
- OHSU Knight Cancer Institute
HIV/AIDS, Osteoporosis
Preventing Bone Loss Among Chinese Patients With HIV on ART
The major goal of this study will be to conduct a randomized, double-blind, placebo-controlled, clinical trial of intermittent high-dose vitamin D3 supplementation (180,000IU) given at the point of care (every 3 months) after…
- Conditions
- HIV/AIDS, Osteoporosis, Bone Loss
- Trial name
- NCT03598556
- Testing
- Vitamin D3
- Where
- 6 sites in China
- Volunteers
- 600 people
- Sponsor
- Peking Union Medical College Hospital
Obesity (Disorder), Obesity
Effect of Vitamin D on Body Composition and Functionality of Older Adults
Older adults with obesity often experience a gradual loss of muscle mass and muscle strength, a condition sometimes described as sarcopenic obesity.
- Conditions
- Obesity (Disorder), Obesity, Sarcopenia, Sarcopenia in Elderly
- Trial name
- NCT07275177
- Testing
- Vitamin D
- Where
- Mexico
- Volunteers
- 29 people
- Sponsor
- Universidad Autónoma Benito Juárez de Oaxaca
Sarcoidosis, Vitamin D Insufficiency
Vitamin D Homeostasis in Sarcoidosis
This study evaluates the relationship between vitamin-D status and severity of sarcoidosis, and the effects of vitamin-D repletion in vitamin-D insufficient patients with sarcoidosis.
- Trial name
- NCT03621553
- Testing
- Ergocalciferol, Calcium Citrate with Vitamin D2
- Where
- United States
- Volunteers
- 90 people
- Sponsor
- University of Texas Southwestern Medical Center
Chronic Obstructive Pulmonary Disease
Detection of Aspergillus Fumigatus and Sensitization in COPD Patients With Bronchiectasis vs Without Bronchiectasis
A single center case-control study with 100 COPD patients will be organized to compare patients with and without bronchiectasis with regard to the presence of Aspergillus in sputum samples, Aspergillus sensitization and vitamin…
- Trial name
- NCT02332122
- Testing
- Sputum induction, Skin prick test, Questionnaires
- Where
- Belgium
- Volunteers
- 100 people
- Sponsor
- Wim Janssens
Vitamin D Deficiency
Effects of Vitamin D Supplementation During Pregnancy on Clinical Outcomes and Immune Function
Researchers at the USDA Western Human Nutrition Research Center and clinicians at UC Davis Medical Center are currently conducting a study on the effects of vitamin D supplementation during pregnancy on maternal health and immune…
- Trial name
- NCT01417351
- Testing
- 400 IU vitamin D3, 2,000 IU Vitamin D3
- Where
- 2 sites in United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- USDA, Western Human Nutrition Research Center
Urticaria, Vitamin D Deficiency
A Trial to Evaluate the Effect of Vitamin D Supplementation in Patients With Chronic Urticaria
This study will be an assessor-blind, randomized controlled trial in patients with CSU. The investigators will compared Vit D level in patients with Chronic spontaneous urticaria (CSU) and controls.
- Trial name
- NCT03991845
- Testing
- Vit D
- Where
- India
- Volunteers
- 262 people, healthy volunteers welcome
- Sponsor
- Post Graduate Institute of Medical Education and Research, Chandigarh