Clinical trials: Vitamin/Nutritional Deficiency
Vitamin D Deficiency, Cystic Fibrosis
PK/PD of Vitamin D3 in Adults With CF
Despite the extensive literature on adverse clinical outcomes associated with vitamin D deficiency, there are currently no proven treatment strategy that effectively achieves and maintains optimal serum vitamin D status in cystic…
- Trial name
- NCT03734744
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 6 people
- Sponsor
- University of Southern California
Vitamin D Deficiency, Hypovitaminosis A
A Randomized Controlled Trial Testing The Effect Of A Multi-Nutrient Fortified Juice
The goal of this investigator-initiated study is to determine whether the fortification of orange juice with vitamin D, vitamin A, and vitamin E will enhance the vitamin D, vitamin A, and vitamin E status children ages 6-10 that…
- Conditions
- Vitamin D Deficiency, Hypovitaminosis A, Vitamin E Deficiency
- Trial name
- NCT01909063
- Testing
- Vitamin D, Vitamin D, Vitamin E, and Vitamin A, Control, 700 mg Calcium
- Where
- United States
- Volunteers
- 180 people, healthy volunteers welcome
- Sponsor
- Boston University
Vitamin D Deficiency, End Stage Renal Disease
A Study of 25-hydroxy Vitamin d Levels in Non-itching Hemodialysis Patients
Hypothesis: 25-hydroxy vitamin D levels in non-itching hemodialysis (HD) patients will be higher than those in HD patients with itching 25-hydroxy vitamin D levels will be measured in non-itching hemodialysis patients and…
- Trial name
- NCT01548716
- Where
- 2 sites in United States
- Volunteers
- 50 people
- Sponsor
- Winthrop University Hospital
Infant Malnutrition
The Mazira Project: An Evaluation of Eggs During Complementary Feeding in Rural Malawi
The Mazira Project is a study of the effect of egg consumption on growth, development and gut health of infants in Malawi. The study randomly assigns infants to receive one egg per day over six months or to receive an equivalent…
- Trial name
- NCT03385252
- Testing
- Eggs, Visits
- Where
- Malawi
- Volunteers
- 662 people, healthy volunteers welcome
- Sponsor
- University of California, Davis
Respiratory Tract Infection, Vitamin D Deficiency
Cholecalciferol Intervention to Prevent Respiratory Infections Study
This is a feasibility double-blind randomised controlled trial in 32 participants. It evaluates the feasibility of a full trial which will examine the efficacy of weekly supplementation of cholecalciferol (vitamin D3) relative to…
- Trial name
- CIPRIS (NCT01549938)
- Testing
- Cholecalciferol
- Where
- Australia
- Volunteers
- 32 people, healthy volunteers welcome
- Sponsor
- Menzies Institute for Medical Research
Vitamin D Deficiency
Topical Delivery of Vitamin D3 as Vitamin D Supplementation
After obtaining the approval from the IRB of University of Dammam and informed consent from 550 healthy patients, with vitamin D deficiency and vitamin D insufficiency and deficiency were recruited.
- Trial name
- NCT02735200
- Testing
- Application of topical vitamin d3 (Top-D), Application of Aloe vera gel
- Where
- Saudi Arabia
- Volunteers
- 550 people, healthy volunteers welcome
- Sponsor
- Imam Abdulrahman Bin Faisal University
Vitamin D Deficiency
The 'Hidden' Biological Impact of Vitamin D Deficiency: a Biomarker Study; Part 2
The investigators major aims are to: determine the vitamin D status of a group of young, apparently healthy adults in Hong Kong; examine inter-relationships between vitamin D status and biomarkers of DNA damage and repair…
- Trial name
- NCT02451787
- Testing
- Vitamin D
- Where
- Hong Kong
- Volunteers
- 27 people, healthy volunteers welcome
- Sponsor
- The Hong Kong Polytechnic University
Vitamin A Deficiency
Efficacy of Biofortified Maize to Improve Maternal and Infant Vitamin A Status
The purpose of this randomized control trial is to test the impact of provitamin A carotenoid biofortified maize meal consumption on maternal and infant vitamin A status.
- Trial name
- NCT02804490
- Testing
- Conventional white maize, Provitamin A carotenoid biofortified maize, Preformed vitamin A fortified maize
- Where
- Zambia
- Volunteers
- 255 people, healthy volunteers welcome
- Sponsor
- Johns Hopkins Bloomberg School of Public Health
Vitamin D Insufficiency, Vitamin D Deficiency
Vitamin D Inadequacy in Rural Populations, Evaluation of Correction by Food Supplementation
The purpose of the research is to describe vitamin D levels and bone status in a rural Wisconsin population. It is probable that individuals of varying age and ethnicity require different amounts of D to achieve optimal status.
- Trial name
- NCT00690417
- Testing
- Cholecalciferol (vitamin D3)
- Where
- United States
- Volunteers
- 108 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison
Rare Disorders, Undiagnosed Disorders
Rare Disease Patient Registry & Natural History Study - Coordination of Rare Diseases at Sanford
The Coordination of Rare Diseases at Sanford (CoRDS) is an international patient registry that serves as a centralized resource for rare disease research.
- Conditions
- Rare Disorders, Undiagnosed Disorders, Disorders of Unknown Prevalence, Cornelia De Lange Syndrome
- Trial name
- CoRDS (NCT01793168)
- Where
- United States
- Volunteers
- 20,000 people
- Sponsor
- Sanford Health
Crohn Disease, Vitamin D Deficiency
Can Vitamin D Supplementation in People With Crohn's Disease Improve Symptoms as an Adjunct Therapy?
There are around 115,000 people in the United Kingdom suffering with Crohn's Disease (CD). CD can cause inflammation and ulcers to develop anywhere within the gut.
- Trial name
- D-CODE (NCT03718182)
- Testing
- Cholecalciferol
- Where
- United Kingdom
- Volunteers
- 50 people
- Sponsor
- University Hospital Birmingham NHS Foundation Trust
Vitamin D Deficiency
Emulated Study of Vitamin D Correction Vs Non-Correction
This is a single-site retrospective electronic chart review of Cooper Health System Inpatients and Outpatients from 2008 through 2023 aged eighteen years or older.
- Trial name
- NCT06366776
- Where
- United States
- Volunteers
- 9,000 people
- Sponsor
- The Cooper Health System
Vitamin D Deficiency
Impact of Work Environment Absent of Natural Light on Vitamin D Levels
Three types of workers exposed to different levels of natural sunlight will be tested for Vitamin D blood level, PTH, Ca, P, albumin and alkaline phosphatase.
- Trial name
- NCT01385085
- Volunteers
- 300 people, healthy volunteers welcome
- Sponsor
- Medical Corps, Israel Defense Force
Thiamine Deficiency
Further Development and Assessment of Tools to Measure Risk Factors for and Treatment of Thiamine Deficiency Disorders
Thiamine deficiency, including the most severe form infantile beriberi, is a public health concern across South and Southeast Asia, where monotonous diets rely on thiamine-poor white rice.
- Trial name
- NCT05390086
- Testing
- Standard of care
- Where
- 2 sites in Laos
- Volunteers
- 42 people
- Sponsor
- University of California, Davis
Folate Deficiency, Vitamin B 12 Deficiency
Effectiveness of Fortification With Folic Acid and Vitamin B12 Among Teenage Girls
Folic acid and vitamin B12 play an interdependent role in key cellular processes, namely deoxyribonucleic acid synthesis, cell division, red blood cell formation, and nervous system myelination.
- Conditions
- Folate Deficiency, Vitamin B 12 Deficiency, Anemia, Megaloblastic, Cognitive Development
- Trial name
- NCT06100146
- Testing
- Folic acid and vitamin B12 fortified flour, Unfortified cereal flour
- Where
- 2 sites in Ethiopia
- Volunteers
- 472 people, healthy volunteers welcome
- Sponsor
- University Ghent
Osteoporosis, Fractures
Determination of Optimum Age for DXA Screening for Osteoporosis in HIV - The Probono 1 Study
The purpose of this study is to determine the bone mineral density in male and female patients with HIV infection according to age groups.
- Conditions
- Osteoporosis, Fractures, HIV Infection
- Trial name
- Probono1 (NCT01669954)
- Where
- United Kingdom
- Volunteers
- 440 people, healthy volunteers welcome
- Sponsor
- King's College London
Vitamin Deficiency
Study of Absorption Characteristics of Two Multivitamin Mineral Formulations (Gel vs. Tablet/Capsule)
This clinical study is designed to evaluate difference in the AUC of the absorption of Multivitamin and minerals defined in the protocol
- Trial name
- NCT03146273
- Testing
- Multivitamins
- Where
- Israel
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Galilee CBR
Hypovitaminosis D, Obesity
Hypovitaminosis D and "Metabolic" Inflammatory Status in Patients With Obesity
Since obesity is related to systemic chronic inflammatory status and hypovitaminosis D, the study aimed to assess the incidence of hypovitaminosis D in obese patients and the correlations between vitamin D levels, inflammation…
- Trial name
- ViDO (NCT06115356)
- Testing
- Vitamin D Plasma Level, Bioelectrical Impedance Analysis (BIA) technique, Ferritin
- Where
- Italy
- Volunteers
- 208 people
- Sponsor
- University of Trieste
Iron-deficiency, Vitamin A Deficiency
Sub Regional Micronutrient Survey in Ethiopia
To conduct a sub-regional micronutrient survey (SRMNS) assessing the prevalence of vitamin A, Zn, and Fe status in the country
- Conditions
- Iron-deficiency, Vitamin A Deficiency, Zinc Deficiency
- Trial name
- NCT03353662
- Testing
- Women of Gamo Gofa, Children of Gamo Gofa, Women of West Gojjam
- Where
- 2 sites in Ethiopia, Switzerland
- Volunteers
- 1,200 people, healthy volunteers welcome
- Sponsor
- Swiss Federal Institute of Technology
Polycystic Ovarian Syndrome in Adolescent Females, Vitamin D Deficiency
Evaluation of the Clinical and Psychological Impact of Vitamin D Replacement in Adolescent Females at Risk for Polycystic Ovarian Syndrome (PCOS)
This study is a double blind, placebo controlled, randomized trial of study subjects with PCOS and low vitamin D to 2 groups- placebo and vitamin D replacement.
- Trial name
- NCT04355572
- Testing
- Vitamin D 4000IU daily
- Where
- United States
- Volunteers
- 60 people
- Sponsor
- Yale University
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