Clinical trials: Vitamin Deficiencies
Iron Deficiency Anemia, B12 Deficiency Anemia
Do Iron And Vitamin B12 Injections Given Together, Improve Hemoglobin In Patients On Hemodialysis?
A parallel group, quadruple blind, placebo-controlled, randomized control trial with 2x2 factorial design to determine the effect of simultaneous IV ferric carboxymaltose and IM hydroxycobalamin supplementation in anemic Indian…
- Trial name
- ALOHA (NCT04627181)
- Testing
- Ferric carboxymaltose, Hydroxycobalamin
- Where
- India
- Volunteers
- 100 people
- Sponsor
- Christian Medical College, Vellore, India
Vitamin A Deficiency
Vitamin A Equivalence of Plant Carotenoids in Children
Our objectives will be to test the following hypotheses and to make the following determinations: (1) The absorption and bio-conversion of provitamin A carotenes taken by children are different between spinach, Golden Rice, and…
- Trial name
- NCT00680212
- Testing
- dietary carotenoids, spinach, rice, and synthetic beta-carotene
- Where
- United States
- Volunteers
- 72 people, healthy volunteers welcome
- Sponsor
- Tufts University
Vitamin D Deficiency, Hemodialysis Patient
Cholecalciferol Supplementation Effect on Parathyroid Hormone in Hemodialysis Patients
Introduction. Vitamin D regulates mineral metabolism. Its deficiency has been associated with diabetes, cancer and increased mortality. 25OH vitamin D (25VD) is stable and suitable for the evaluation of vitamin D sufficiency.
- Trial name
- NCT03648528
- Testing
- cholecalciferol
- Volunteers
- 120 people
- Sponsor
- Cooperativa Asistencia Sindicato Médico Uruguay
Hashimoto Disease, Treatment Levothyroxine
Effect of Treatment for Vitamin D Deficiency on Thyroid Function and Autoimmunity in Hashimoto's Thyroiditis.
The objective of this study is to evaluate the effect of vitamin D supplementation on thyroid autoimmunity, thyroid function, and other metabolic and clinical variables associated with the thyroid axis in patients with…
- Conditions
- Hashimoto Disease, Treatment Levothyroxine, Vitamin D Deficiency
- Trial name
- NCT04778865
- Testing
- Vitamin D-correction, Vitamin D-RDA
- Where
- Chile
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Universidad de Valparaiso
Epilepsy, Magnesium Deficiency
Magnesium as a Mediator of Bone and Vitamin D Metabolism in Patients on Antiepileptic Drug Therapy
The objective of this study is to determine the role of magnesium on bone and vitamin D metabolism in patients receiving anti-epileptic medications.
- Conditions
- Epilepsy, Magnesium Deficiency, Vitamin D Deficiency
- Trial name
- NCT03471481
- Testing
- No Intervention. Study is Cross Sectional in nature
- Where
- 2 sites in United States
- Volunteers
- 7 people
- Sponsor
- Drexel University
Vitamin D Deficiency
Effects of Vitamin D Dose and Genotype of the Binding Protein in Infants and Children
The purpose of this study is to determine if the vitamin D binding protein genotype influences circulating vitamin D levels and if it may have functional consequences on vitamin D activity.
- Trial name
- VitaD (NCT01050387)
- Testing
- Vitamin D
- Where
- United States
- Volunteers
- 193 people, healthy volunteers welcome
- Sponsor
- Yale University
Acne Vulgaris, Vitamin D Deficiency
Impact of COVID-19 Vaccination on Serum 25-hydroxyvitamin D Level
Vitamin D plays a pivotal but still not well understood role in the immune response to coronavirus disease (COVID-19) infection and vaccination.
- Conditions
- Acne Vulgaris, Vitamin D Deficiency, COVID-19
- Trial name
- NCT05398939
- Testing
- Blood test and skin evaluation
- Where
- Taiwan
- Volunteers
- 20 people
- Sponsor
- National Taiwan University Hospital
Heart Failure, Acidosis, Lactic
Preoperative Parenteral Thiamine Supplementation in Patients Undergoing Heart Surgery
The objective of this study is to determine whether preoperative parenteral thiamin supplementation does prevent the intra and early postoperative increase of lactate and whether this effect is related to the extent of thiamine…
- Conditions
- Heart Failure, Acidosis, Lactic, Thiamine Deficiency
- Trial name
- NCT01524315
- Testing
- Vitamin B1-ratiopharm
- Where
- Austria
- Volunteers
- 30 people
- Sponsor
- Medical University of Vienna
Chronic Kidney Disease, Vitamin D Deficiency
hCAP18 Levels and Vitamin D Deficiency in Chronic Kidney Disease
The human immune system produces a protein called hCAP18 (also known as LL-37 or cathelicidin). This protein is believed to help the body to fight infections.
- Trial name
- NCT01026363
- Testing
- Ergocalciferol, Calcitriol
- Where
- United States
- Sponsor
- Massachusetts General Hospital
Hypovitaminosis D
Importance of Dosing Regimen for the Effect of Vitamin D Supplementation
Vitamin D is a hormone with effects not only on the skeleton, but on most tissues in the body. Lack of vitamin D is associated with cardio-vascular disease (CVD), type 2 diabetes, cancer, infectious and immunological diseases, as…
- Trial name
- NCT03272126
- Testing
- Vitamin D
- Where
- Norway
- Volunteers
- 61 people, healthy volunteers welcome
- Sponsor
- University of Tromso
Vitamin D Deficiency
Vitamin D Intervention Trial in Healthy Chinese, Phase II
This is a double-blind, randomized, placebo-controlled trial. Based on inclusion and exclusion criteria, 400 eligible volunteers, who were 20-45 years, with 25-hydroxyvitamin D between 12.5-50 nmol/L and BMI between 18.5-28…
- Trial name
- NCT01998763
- Testing
- Vitamin D3
- Where
- China
- Volunteers
- 448 people, healthy volunteers welcome
- Sponsor
- Chinese Academy of Sciences
Cystic Fibrosis
Vitamin K Supplementation to Reduce Deficiencies in Adults With Cystic Fibrosis
Cystic fibrosis (CF) patients are at risk for vitamin K deficiencies. Supplementation for fat-soluble vitamins A, D, and E is well established, but in CF, there is little data for vitamin K concerning the optimal dose and…
- Trial name
- VITK-FK (NCT04496921)
- Testing
- Vitamin K supplementation, dose #1, Vitamin K supplementation, dose #2
- Where
- 2 sites in Canada
- Sponsor
- Institut de Recherches Cliniques de Montreal
Chronic Lymphocytic Leukemia, Non-Hodgkin Lymphoma
Cholecalciferol in Newly Diagnosed Non-Hodgkin Lymphoma or Chronic Lymphocytic Leukemia With Vitamin D Deficiency
This randomized pilot early phase I trial studies how well cholecalciferol works in treating patients with newly diagnosed non-Hodgkin lymphoma or chronic lymphocytic leukemia with low levels of vitamin D (vitamin D deficiency).
- Conditions
- Chronic Lymphocytic Leukemia, Non-Hodgkin Lymphoma, Untreated Chronic Lymphocytic Leukemia, Vitamin D Deficiency
- Trial name
- NCT02553447
- Testing
- Cholecalciferol, Laboratory Biomarker Analysis
- Where
- United States
- Volunteers
- 197 people
- Sponsor
- University of Nebraska
Infertility, Infertility, Female
The Effect of Vitamin D on Fertility
Objective: To examine the effect of vitamin D supplements on the pregnancy and clinical pregnancy rate in embryo transfer cycles. Design: Experimental study with a pre- and post-test.
- Conditions
- Infertility, Infertility, Female, Vitamin D Deficiency, Vitamin D3 Deficiency
- Trial name
- NCT03890458
- Testing
- DEVIT-3
- Where
- Turkey (Türkiye)
- Volunteers
- 118 people, healthy volunteers welcome
- Sponsor
- Akdeniz University
Hyperhomocysteinemia
Effects of Supplementation of Compound Nutrients on Plasma Homocysteine in Chinese Adults With Hyperhomocysteinemia
The purpose of this study is to determine whether supplementation of compound nutrients,including folic acid, vitamin B6, vitamin B12, betaine and zinc, will decrease the level of plasma homocysteine in Chinese adults with…
- Trial name
- NCT03720249
- Testing
- supplementation of compound nutrients
- Where
- China
- Volunteers
- 100 people
- Sponsor
- Huilian Zhu
Hypovitaminosis D
Vitamin D Supplementation in Younger Women
That on average it will require a vitamin D dose of 1700IU/day to increase the serum 25hydroxyvitamin D level from 20 to 30ng/ml in young Caucasian women and a dose of 1860 to 2480 IU/day in African American
- Trial name
- VITADAS (NCT00662844)
- Testing
- vitamin D3
- Volunteers
- 198 people, healthy volunteers welcome
- Sponsor
- Creighton University
Vitamin D Deficiency, Stem Cell Transplant Complications
A Randomized Phase IV Control Trial of Single High Dose Oral Vitamin D3 in Pediatric Patients Undergoing HSCT
Research has suggested that children with sufficient vitamin D levels undergoing hematopoietic stem cell transplant (HSCT) have improved outcomes, including lower incidences of infection and graft-versus-host disease (GVHD), as…
- Conditions
- Vitamin D Deficiency, Stem Cell Transplant Complications, Pediatric Cancer, Blood Disorder
- Trial name
- NCT03176849
- Testing
- Vitamin D3, Standard Vitamin D3 Supplementation
- Where
- United States
- Volunteers
- 49 people
- Sponsor
- Phoenix Children's Hospital
Systemic Lupus Erythematosus, SLE
Vitamin D3 in Systemic Lupus Erythematosus
The purpose of this study is to explore the impact of vitamin D3 on the expression of alpha interferon (IFN alpha) expression in systemic lupus erythematosus (SLE) patients with vitamin D deficiency.
- Conditions
- Systemic Lupus Erythematosus, SLE, Lupus
- Trial name
- NCT00710021
- Testing
- Vitamin D3
- Where
- 8 sites in United States
- Volunteers
- 57 people
- Sponsor
- National Institute of Allergy and Infectious Diseases (NIAID)
Hypovitaminosis D
The Effectiveness of a Weight-dependent Algorithm for Dosing Vitamin D.
Vitamin D is essential for calcium absorption and bone growth, brain development, and immune system function. Vitamin D is produced by the body in response to natural sunlight.
- Trial name
- NCT07876843
- Testing
- Vitamin D3, Calcium, and Vitamin C
- Where
- United States
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Atlantic Health System
Nutritional Status, Nutrient Deficiency
Dietary Challenges in the Population of Nursing Homes' Residents
To obtain up-to-date data on nutritional status of older adults, a national dietary survey will be conducted in 2022/2023, providing data on the consumption of foods and enabling the assessment intakes of energy and specific…
- Conditions
- Nutritional Status, Nutrient Deficiency, Micronutrient Deficiency, Vitamin D Deficiency
- Trial name
- NUTRICARE (NCT05389618)
- Testing
- Diagnostic Tests
- Where
- Slovenia
- Volunteers
- 387 people
- Sponsor
- Institute of Nutrition, Slovenia (Nutris)
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