Search clinical trials for: Vitamin D

Total 15503 results

Örebro University, Sweden
BioGaia AB

Completed

The Effect of Probiotic Supplementation on SARS-CoV-2 Antibody Response After COVID-19

Covid19

Sweden
Church & Dwight Company, Inc.
Medical University of South Carolina

Completed

Bioequivalence Study on Vitamin D in Healthy Adults

Measure Absorption of Vitamin D in Blood

United States
Meir Medical Center

Unknown

Vitamin D and Its Affect on Growth Rates and Bone Mineral Density Until Age 5 (VitD)

Vitamin D Deficiency

Israel
Medical University of Bialystok
Lomza State University of Applied Sciences; International Science & Health... and other collaborators

Recruiting

The Vitamin K2 and D3 Intervention Trial in Children and Adolescents With the Low-energy Fractures

Vitamin D3 | Fracture Healing | Deficiency of Vitamin K2

Poland
Diabetes Foundation, India

Recruiting

Vitamin D Supplementation on Surrogate Markers of Ageing, Ageing Genes, Glycemic and Metabolic Markers in North India

PreDiabetes | Aging | Vitamin D Supplementation

India
Cairo University

Completed

Impact of Ultraviolet Radiation on Bone Density and Muscle Strength in Postmenopausal Women

Postmenopausal Osteoporosis

Egypt
Hospital Universitario Dr. Jose E. Gonzalez

Completed

Oral Vitamin D Supplementation Combined With Phototherapy as a Treatment for Vitiligo

Autoimmune Diseases | Vitiligo | Vitiligo, Generalized | Autoimmune | Autoimmune Disease Skin

Mexico
Al-Azhar University

Completed

Vitamin D Supplementation and Glycemic Control Improvement Among Type 1 Diabetic Children

Vitamin D Deficiency | Type 1 Diabetes Mellitus

Palestinian Territory, occupied
Fatih Sultan Mehmet Training and Research Hospital

Completed

The Relationship Between Vitamin D Levels, Inflammatory Parameters and Disease Severity of COVID-19 Infection

Covid19 | Vitamin D Deficiency

Turkey
Italian Society of Nephrology
Società Italiana di Nefrologia

Terminated

Clinical Trial on the Use of 25-OH -D Vitamin in Haemodialysis Patients (NUTRIVITA-D001)

Chronic Renal Failure

Italy
French National Agency for Research on AIDS and...

Completed

Efficacy of Vitamin D on Top of Pegylated Interferon and Ribavirin in Patients With Chronic Viral Hepatitis C Null-Responders (ANRS VITAVIC)

Chronic Hepatitis C

France
Weill Medical College of Cornell University

Unknown

Vitamin D and Glucose Metabolism in Pediatrics

Obesity | Insulin Resistance | Vitamin D25 Insufficiency

United States
Meddoc
Tine

Not yet recruiting

The Long-term Effect of Daily Jarlsberg Cheese Intake in Patient With Osteopenia (PF-JB3)

Osteoporosis | Osteopenia
Jordan University of Science and Technology

Completed

Prevalence of Vitamin D Deficiency in Pregnant Women and Their Fetus in North Jordan

Vitamin D Deficiency

Jordan
University of North Carolina, Chapel Hill
National Institute on Drug Abuse (NIDA); National Institute of Mental Health...

Completed

Vitamin D Reabsorption in Adolescents and Young Adults With HIV Infection

HIV Infections

United States, Puerto Rico
London School of Hygiene and Tropical Medicine
Wellcome Trust; Aga Khan University; Aga Khan Health Services; Maywand Hospital...

Unknown

Kabul Vitamin D Supplementation Trial

Pneumonia | Vitamin D Deficiency

Afghanistan
Chen Li

Recruiting

Adjuvant Effects of Vitamin A and Vitamin D Supplementation on Treatment of Children With ADHD

ADHD

China
Children's Hospital Medical Center, Cincinnati

Completed

A Randomized Trial of Vitamin D Supplementation With or Without Vitamin A in Stem Cell Transplantation

Hematopoietic Stem Cell Transplant

United States
King Edward Medical University

Completed

Effect of Escalating Oral Vitamin D Replacement on HOMA-IR in Vitamin D Deficient Type 2 Diabetics

Diabetes Mellitus, Type 2 | Vitamin D Deficiency | Insulin Resistance
Andrea Branch

Unknown

The Effect of Vitamin D Repletion in Patients With Hepatocellular Carcinoma on the Orthotopic Liver Transplant List

Hepatocellular Carcinoma | Vitamin D Deficiency

United States
Mothaffar Rimawi

Terminated

High Dose Vitamin D vs Standard Dose Vitamin D Study

Breast Cancer

United States
Peking University People's Hospital

Unknown

Effect of Vitamin D Supplementation on Coronary Calcification and Parathyroid Hormone in CKD Patients (EVIDENCE)

Vitamin D Deficiency | Chronic Kidney Disease

China
Kanuni Sultan Suleyman Training and Research Hospital
Ayşegül Bestel; İbrahim Polat; Merve Aldıkaçtıoğlu Talmaç

Completed

Evaluation of the Relationship Between Zinc Vitamin D and b12 Levels in the Covid-19 Positive Pregnant Women

Vitamin D Deficiency | COVID | Zinc Deficiency

Turkey
Ain Shams University

Completed

Vitamin D Serum Levels in Monosymptomatic Enuretic and Non Enuretic Children

Nocturnal Enuresis

Egypt
University College Dublin

Completed

Absorption Kinetics and Efficacy of Vitamin D Enriched Supplements in Older Adults.

Vitamin D Deficiency

Ireland
Baylor University

Active, not recruiting

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

Colorectal Cancer

United States
Assiut University

Active, not recruiting

Prognostic Value of Vitamin D Levels in Egyptian Females With Breast Cancer

Vitamin D Deficiency

Egypt
Cairo University

Completed

Locally Injected Vit D as a Non-surgical Modality for Periodontal Regeneration of Infrabony Defects

Periodontal Bone Loss | Periodontal Pocket
Dr. S R Thanthulage

Terminated

Vitamin D Levels In Patients Who Has Normal to Grade 2 Knee Arthroscopy Changes

Knee Pain

United Kingdom
IVI Madrid

Completed

Vitamin D Influence on Oocyte Donation

Female Infertility Due to Diminished Ovarian Reserve | Disorder of Phosphate, Calcium and Vitamin D Metabolism | Hormonal Requirement | Reproductive Disorder
Ulrike Lehmann

Completed

Bioefficiency of of Conventional Fish and Vitamin D Fortified Fish

Vitamin D Deficiency

Germany
Fondazione C.N.R./Regione Toscana "G. Monasterio...

Completed

Paricalcitol and Endothelial Function in Chronic Kidney Disease Patients (the PENNY Study) (PENNY)

Chronic Kidney Disease.

Italy
Standard Process Inc.

Suspended

Standard Process Heart and Gut Health Study

Nutrition, Healthy

United States
University College Dublin
St Vincent's University Hospital, Ireland; University of Dublin, Trinity College

Completed

Dose-related Effects of Vitamin D3 on Immune Responses in Patients With Clinically Isolated Syndrome (CISAVID)

Multiple Sclerosis | Clinically Isolated Syndrome

Ireland
Emory University

Completed

Comparison of Absorption of Vitamin D in Cystic Fibrosis

Cystic Fibrosis

United States
Jorgen Vestbo

Withdrawn

Vitamin D and Chronic Obstructive Lung Disease

Chronic Obstructive Lung Disease

Denmark
Lund University

Completed

Alternative Treatments of Vitamin D Deficiency

Vitamin D Deficiency

Sweden
Bangabandhu Sheikh Mujib Medical University, Dhaka...

Completed

Impact of Vitamin D3 Administration on Cardiac Autonomic Tone in Asthma Chronic Obstructive Pulmonary Disease(COPD) Overlap Patients (COPD)

Vitamin D Deficiency | Asthma-COPD Overlap Syndrome | Cardiac Autonomic Tone

Bangladesh
CHU de Quebec-Universite Laval
Khlôros Technology; Anne-Sophie Morisset

Completed

Comparison of Changes in Serum 25(OH)D Concentrations Following Vitamin D Supplementation With Chewable Tablets Versus Pills

Vitamin D Deficiency

Canada
National and Kapodistrian University of Athens
National Hellenic Research Foundation

Completed

Design and Development of a Novel Food Supplement for Osteoporosis Based on Gut Microbiome Mechanisms (OSTEOME)

Osteopenia | Postmenopausal Osteopenia

Greece
Peking University Third Hospital

Not yet recruiting

The Phenotype and Clinical Intervention of High BCAA Type of PCOS (BCAAPCOS)

Polycystic Ovary Syndrome
Rutgers University
National Institute on Aging (NIA)

Completed

The Effect of Vitamin D Supplementation During Caloric Restriction on Intestinal Calcium Absorption

Weight Loss | Vitamin D or Placebo

United States
Fatih Sultan Mehmet Training and Research Hospital

Active, not recruiting

Relationship Between Vitamin D and Vitamin B12 Levels and Neuropathic Pain in Lipedema

Vitamin D Deficiency | Lipedema | B12 Deficiency Vitamin

Turkey
University Potiguar

Completed

Systemic Vitamin D Supplementation in Dental Implants Patients (VitaminD)

Osteoporosis

Brazil
King's College London
Vitamax Wholesalers LLP

Recruiting

Human Transdermal Vitamin D Supplement Study (TransVitD)

Vitamin D Supplementation

United Kingdom
Boston University

Completed

Evaluation of the Bioavailability of Vitamin D2 in Yeast and Bread

Healthy
Bambino Gesù Hospital and Research Institute

Completed

DHA and Vitamin D in Children With Biopsy-proven NAFLD (VitD_DHA)

NAFLD | Non Alcoholic Steatohepatitis (NASH)

Italy
Ghamra Military Hospital
Al-Azhar University

Completed

Vitamin D Levels in Women With Polycystic Ovary Syndrome

Polycystic Ovary Syndrome

Egypt
University of Colorado, Denver
National Institute on Aging (NIA); The American Geriatrics Society

Completed

Vitamin D Supplementation and Acute Respiratory Infection in Older Long-Term Care Residents

Respiratory Infection

United States
University College Dublin
University of Ulster

Completed

An Intervention Study to Investigate the Effect of B-vitamin Supplementation for 2-years on Bone Health (Opti-Age)

Bone Health

Ireland

Search clinical trials for: Vitamin D

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in United Arab Emirates

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations