Clinical trials: Vitamin Deficiencies
HIV/AIDS, Vitamin D Deficiency
Effect of High-Dose Vitamin D3 in Smokers and Non-Smokers With and Without HIV
Supplementation with vitamin D improves HIV+ macrophages phagocytosis in vitro. There is evidence to suggest that administering vitamin D can in fact improve immune function in individuals.
- Conditions
- HIV/AIDS, Vitamin D Deficiency, Smoker Lung
- Trial name
- NCT03270709
- Testing
- Vitamin D3 450,000 IU orally
- Where
- 2 sites in United States
- Volunteers
- 7 people
- Sponsor
- Emory University
Prevention of Vitamin Deficiency During and/or Before Pregnancy
A Study to Gather Information About the Progress and Outcomes of Pregnancy in Women Using Various Vitamin Support Plans Before and During Pregnancy
This is an observational study in which data from the participants who will be taking different vitamin supplementation regimes before and during pregnancy.
- Trial name
- NCT05062044
- Testing
- Multivitamins (Elevit, BAY987808), Multivitamins (Elevit, BAY2906300), Multivitamins (Elevit, BAY987386)
- Where
- 3 sites in Kazakhstan, Russia and 1 more
- Volunteers
- 1,500 people, healthy volunteers welcome
- Sponsor
- Bayer
Overweight, Hypovitaminosis D
Effects of Vitamin D Supplementation on Obesity, Inflammatory and Metabolic Markers
46 eligible overweight women with hypovitaminosis D are assigned to either vitamin D or control group using block randomization method.
- Trial name
- NCT05376865
- Testing
- Vitamin D supplement
- Where
- Iran
- Volunteers
- 46 people, healthy volunteers welcome
- Sponsor
- Tirang R. Neyestani, Ph.D.
Metabolic Bone Disease, Osteopenia
A Study to Assess Metabolic Bone Disease of Prematurity Using an Acoustic Method
The goal of this project is to develop a new noninvasive ultrasound based technique, called vibro-acoustic analysis (VAA), for evaluation of infant bone health with particular application in assessment of bone health in premature…
- Conditions
- Metabolic Bone Disease, Osteopenia, Neonatal Rickets
- Trial name
- NCT04752098
- Testing
- Vibro-acoustic analysis (VAA), based on ultrasound radiation force
- Where
- United States
- Volunteers
- 37 people
- Sponsor
- Mayo Clinic
Vitamin D Deficiency, Military Activity
Vitamin D Supplementation in Estonian Conscripts
A longitudinal, double-blinded, randomized, trial, with a 10 month follow-up period will be conducted between July 2021 to May 2022
- Conditions
- Vitamin D Deficiency, Military Activity, Physical Stress
- Trial name
- NCT04939636
- Testing
- Vitamin D3 capsules 4000IU/100µg., Vitamin D3 capsules 600IU/15µg.
- Where
- Estonia
- Volunteers
- 112 people, healthy volunteers welcome
- Sponsor
- Tartu University Hospital
Vitamin D Deficiency
Determination of Vitamin D Dose to Maintain Sufficiency Amongst Indian and Malay Women in the Tropics
Much research on vitamin D status has focused on seasonal variations in serum 25(OH)D levels in populations living at high altitudes and those of light-skinned Caucasian extraction, with little work done in multi ethnic…
- Trial name
- NCT02389179
- Testing
- Vitamin D3
- Where
- Malaysia
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- Sharifah Faradila bt Wan Muhamad Hatta
Obesity, Insulin Resistance
Correction of Vitamin D Levels and Its Effect on Insulin Resistance and Weight Gain in Obese Youth
Vitamin D deficiency is extremely common in obese youth. In our obese population followed in the Endocrinology clinic at Children's Medical Center Dallas, vitamin D levels were inversely correlated with a measure of insulin…
- Conditions
- Obesity, Insulin Resistance, Vitamin D Deficiency
- Trial name
- NCT02168660
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 109 people
- Sponsor
- Perrin C White, MD
Iron Deficiency Anemia
Effect of Vitamin D Supplementation Added to Iron Therapy in Children With Iron Deficiency Anemia
This randomized controlled trial will evaluate the effect of two vitamin D3 supplementation regimens, administered in addition to oral iron therapy, on hematological and iron status in children aged 6-60 months with confirmed…
- Trial name
- NCT07892170
- Testing
- Elemental iron, Vitamin D3 2000 IU/day, Vitamin D3 400 IU/day
- Where
- Iraq
- Volunteers
- 120 people
- Sponsor
- AlFayhaa General Hospital
Vitamin D Deficiency
Vitamin D Levels in Umbilical Cord and It's Impact on Infant and Children's Health (VITADi Study)
This study is a cohort study that aims to assess the relationship between Vitamin D Levels in infant and the risk of anemia, atopic dermatitis, diarrhea and cardiovascular disorders in newborn.
- Trial name
- VITADi (NCT05419973)
- Testing
- Anthropometric measurement for pregnant women, Anthropometric measurement for infants, Blood sampling
- Where
- Indonesia
- Volunteers
- 100 people
- Sponsor
- Hasanuddin University
Congestive Heart Failure, Hypovitaminosis D
Pilot Study: Hypovitaminosis D, Hyperparathyroidism and Hypomagnesemia in Patients With Congestive Heart Failure
People with heart failure may have low magnesium and low vitamin D levels. They may also have abnormally high levels of parathyroid hormones.
- Conditions
- Congestive Heart Failure, Hypovitaminosis D, Hyperparathyroidism
- Trial name
- NCT00887666
- Where
- United States
- Volunteers
- 48 people
- Sponsor
- State University of New York - Downstate Medical Center
Vitamin D Deficiency
Effect of Vitamin D Oral Supplements on 25 OH Vitamin D Levels
Vitamin D deficiency is common world wide. 25 OH vitamin D level is the best indicator of vitamin D status. Vitamin D supplements are available as vitamin D2 or D3, in small daily or large weekly/monthly doses.
- Trial name
- NCT01170494
- Testing
- ergocalciferol 2000 IU orally, daily, ergocalciferol 25000 IU oraly every 2 weeks, ergocalciferol 50000 IU orally every 4 weeks
- Where
- Saudi Arabia
- Volunteers
- 279 people, healthy volunteers welcome
- Sponsor
- King Faisal Specialist Hospital & Research Center
Chronic Kidney Disease Mineral and Bone Disorder
Phosphorus Absorption in Healthy Adults and in Patients With Moderate Chronic Kidney Disease
Chronic kidney disease (CKD) affects approximately 26 million Americans with many more at risk for disease development. Elevated serum phosphorus (P) and related abnormalities in P homeostasis due to progressive loss of kidney…
- Trial name
- NCT03108222
- Testing
- Phosphorus Absorption Test
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Purdue University
Vitamin D Deficiency
Food-based Solutions for Optimal Vitamin D Nutrition and Health
This project aims at proving the efficacy and safety of food based solutions to prevent vitamin D deficiency in high risk populations of Caucasian and South Asian origin living in Denmark.
- Trial name
- ODIN_FOOD (NCT02631629)
- Testing
- Non-fortified foods, Fortified foods
- Where
- Denmark
- Volunteers
- 143 people, healthy volunteers welcome
- Sponsor
- Technical University of Denmark
Vitamin D Deficiency
Evaluating Vitamin D Content in Mushrooms
This study will evaluate how much vitamin D is present in a mushroom supplement. This supplement contains an extract from mushrooms that have been exposed to sunlight.
- Trial name
- NCT01815437
- Testing
- Mushroom Vitamin D2, Cholecalciferol, Vitamin D2 - Ergocalciferol
- Where
- United States
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Boston University
Primary Hyperparathyroidism, Hypercalcemia
Primary Hyperparathyroidism (PHPT): Early Effect of Vitamin D
Primary hyperparathyroidism (PHPT) is a common disease that occurs in 1 in 10,000 people every year. In the presence of this condition, the parathyroid glands produce excessive amounts of parathyroid hormone (PTH), which…
- Conditions
- Primary Hyperparathyroidism, Hypercalcemia, Vitamin D Deficiency, Osteoporosis
- Trial name
- NCT01329666
- Testing
- Vitamin D3
- Where
- United States
- Sponsor
- Columbia University
Nocturnal Enuresis, Vitamin D Deficiency
Vitamin D Versus Desmopressin Versus Combination Therapy in Children With Primary Monosymptomatic Nocturnal Enuresis and Vitamin D Deficiency
This randomized clinical trial evaluated three treatment approaches for children aged 6 to 12 years who had primary monosymptomatic nocturnal enuresis (night-time bedwetting) and confirmed vitamin D deficiency.
- Trial name
- NCT07292753
- Testing
- Vitamin D, Desmopressin
- Where
- Egypt
- Volunteers
- 90 people
- Sponsor
- Ain Shams University
Hypovitaminosis D, Hypovitaminosis
Evaluating Response to Vitamin D3 and K2 Supplementation in Healthcare Personnel
The main purpose of this research study is to learn about the effects of supplemental vitamin D3 and vitamin K2 on blood levels and the gut microbial community, called the gut microbiome.
- Trial name
- NCT07199829
- Testing
- Vitamin Arm 1, Vitamin Arm 2, Vitamin Arm 3
- Where
- United States
- Volunteers
- 96 people, healthy volunteers welcome
- Sponsor
- Madigan Army Medical Center
Nutritional Rickets
Role of Calcium And Vitamin D In Nutritional Rickets And It's Management
Rickets, a common nutritional disorder, is usually considered to be due to vitamin D deficiency. However, in the last few decades many studies have shown that in tropical countries, with abundance of sunshine, calcium deficiency…
- Trial name
- ROCAVINR (NCT01578434)
- Testing
- Vitamin D, Calcium Carbonate, Vitamin D and Calcium
- Volunteers
- 67 people, healthy volunteers welcome
- Sponsor
- Lady Hardinge Medical College
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
Folate Deficiency, Iodine Deficiency
Acceptability and Nutritional Impact of Double-fortified Salt Containing Iodine and Folic Acid
The overarching objective of this two-phase project is to assess the effects of fortifying iodized salt with folic acid on improving women's folate status.
- Conditions
- Folate Deficiency, Iodine Deficiency, Anemia Macrocytic, Anemia Deficiency
- Trial name
- DFS-IoFA-2 (NCT06223854)
- Testing
- Iodized salt, Experimental: Iodized salt with lower-dose folic acid fortification, Experimental: Iodized salt with higher-dose folic acid fortification
- Where
- Ethiopia
- Volunteers
- 360 people, healthy volunteers welcome
- Sponsor
- University of California, Davis