Clinical trials: Hypovitaminosis
Secondary Hyperparathyroidism, Chronic Kidney Disease
Vitamin D Deficiency in Chronic Kidney Disease (CKD) Patients
This is an open label, single center, randomized, active comparator controlled study, comparing the effects of vitamin D replacement using oral ergocalciferol versus paricalcitol on parathyroid hormone (PTH) levels in patients…
- Trial name
- NCT00958451
- Testing
- Paricalcitol, Ergocalciferol
- Where
- United States
- Volunteers
- 80 people
- Sponsor
- Salem Veterans Affairs Medical Center
Obesity, Child
Thiamin Deficiency in Obese Thai Children
This study is aimed to assess the prevalence of thiamin deficiency in obese Thai children.
- Conditions
- Obesity, Child, Thiamine Deficiency
- Trial name
- NCT02464865
- Testing
- Thiamine 1, Non-thiamine, Thiamine 2
- Where
- Thailand
- Volunteers
- 124 people, healthy volunteers welcome
- Sponsor
- Mahidol University
Burns, Ascorbic Acid Deficiency
Low Dose Vitamin C in Burns >20% Compared to Previous Studies With High Dose Vitamin C
Burn injury is marked by a large release of inflammatory mediators which disrupt the normal capillary barrier and cause a rapid shift of intravascular fluid into interstitial spaces, ultimately leading to shock and death.
- Conditions
- Burns, Ascorbic Acid Deficiency, Burn Shock, Burn Degree Second
- Trial name
- NCT05612867
- Testing
- Vitamin C
- Where
- United States
- Volunteers
- 54 people
- Sponsor
- Arrowhead Regional Medical Center
Vitamin D Deficiency, Orthostatic Intolerance
Vitamin D Deficiency and Dysautonomia
In previous work the investigator identified a group of children between the ages of 10-18 years whose diagnostic workup for chronic nausea unexplained by conventional diagnostic tests has unexpectedly revealed underlying…
- Conditions
- Vitamin D Deficiency, Orthostatic Intolerance, Nausea
- Trial name
- NCT03032328
- Testing
- vitamin D supplement
- Where
- United States
- Volunteers
- 31 people, healthy volunteers welcome
- Sponsor
- Wake Forest University Health Sciences
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
Polycystic Ovary Syndrome, Vitamin D Deficiency
Vitamin D Increases Serum Levels of the Soluble Receptor for Advanced Glycation End Products in Women With PCOS
The purpose of this study is to investigate the mechanism that explain the beneficial clinical effect of vitamin D treatment in women with PCOS.
- Trial name
- NCT03644212
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 79 people, healthy volunteers welcome
- Sponsor
- Maimonides Medical Center
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
Vitamin D Deficiency
Prevalence of Early Childhood Caries in Egyptian Children With Serum Vitamin D Deficiency.
To detect the effect of vitamin D deficiency in the development of early childhood caries (ECC) among Egyptian children.
- Trial name
- NCT03158155
- Volunteers
- 288 people, healthy volunteers welcome
- Sponsor
- Nancy Ahmed El Salmawy
Vitamin D Deficiency
Muscle Metabolic Function in Older Adults With Different Vitamin D Status Before and After Exercise
This is a small pilot aerobic training trial designed to examine differences between normal-high and low vitamin D levels and 7-days of aerobic training on local VO2 measured by non-invasive Hybrid Diffuse Optical Spectroscopy.
- Trial name
- NCT02485197
- Testing
- 7 continuous days of aerobic training
- Where
- United States
- Volunteers
- 7 people, healthy volunteers welcome
- Sponsor
- David Travis Thomas
Neural Tube Defects, Folic Acid Deficiency
Feasibility, Acceptability and Directional Signal Effect on Blood Folate Levels of Iodized Salt Fortified With Folic Acid: Clinical Study
Aim 1: Assess directional signal of effect of fortified salt with folic acid and iodine on blood serum folate levels. It will be accomplished by feasibility pre-test/post-test clinical study by estimating mean and variability of…
- Conditions
- Neural Tube Defects, Folic Acid Deficiency, Fortification
- Trial name
- FASALT (NCT05935631)
- Testing
- Salt with folic acid and iodine
- Where
- United States
- Volunteers
- 32 people, healthy volunteers welcome
- Sponsor
- University of Alabama at Birmingham
Undernutrition
Nutributter Programming to Prevent Undernutrition: an Evaluation
This randomized, controlled effectiveness study examines Nutributter programming within an integrated package of maternal and child health services offered by Haiti's Ministry of Health (MSPP) to prevent undernutrition among…
- Trial name
- NPPU (NCT01552512)
- Testing
- Nutributter Program, Integrated Package
- Where
- Haiti
- Volunteers
- 1,228 people
- Sponsor
- Washington University School of Medicine
Scoliosis Idiopathic, Vitamin D Deficiency
Vitamin D Levels in Adolescent Idiopathic Scoliosis
This study aims to estimate the prevalence of vitamin D insufficiency among patients with adolescent idiopathic scoliosis, to calculate the differences in serum vitamin D levels, Cobb angles, spinal bone mass densities, and serum…
- Conditions
- Scoliosis Idiopathic, Vitamin D Deficiency, BMD
- Trial name
- NCT03820895
- Testing
- Blood test
- Volunteers
- 60 people
- Sponsor
- Security Forces Hospital
Influenza Vaccine, Immune Response
Evaluation of Metabolic Predictors of Influenza Vaccine Immune Response in the Singapore Elderly Population - the DYNAMIC Trial
The trial aims to evaluate role of metabolic factors including systemic 25-OH D and diabetes in the adaptive immune response (haemagluttination inhibition titer) to influenza vaccine in the elderly.
- Conditions
- Influenza Vaccine, Immune Response, Elderly, Vitamin D Deficiency
- Trial name
- NCT03399357
- Testing
- Influenza Vaccine
- Where
- Singapore
- Volunteers
- 240 people, healthy volunteers welcome
- Sponsor
- Tan Tock Seng Hospital
Inflammatory Bowel Disease, Crohn Disease
High Dose Interval Vitamin D Supplementation in Patients With Inflammatory Bowel Disease Receiving Biologic Therapy
The investigators will be administering oral high dose interval vitamin D, concurrently when participants are receiving biologic therapy for their inflammatory bowel disease.
- Conditions
- Inflammatory Bowel Disease, Crohn Disease, Ulcerative Colitis, Vitamin D Deficiency
- Trial name
- NCT04331639
- Testing
- vitamin D3
- Where
- United States
- Volunteers
- 50 people
- Sponsor
- Boston Children's Hospital
Vitamin C Deficiency, Acute Disease
A Long-term Study to Describe the Use of PASCORBIN® 7.5 g in Patients With Vitamin C Deficiency
The aim of this long-term observational study is the documentation of the use of PASCORBIN® 7.5 g in patients with vitamin C deficiency.
- Conditions
- Vitamin C Deficiency, Acute Disease, Chronic Disease
- Trial name
- NCT02422901
- Testing
- vitamin C
- Where
- Germany
- Volunteers
- 5,000 people
- Sponsor
- Pascoe Pharmazeutische Praeparate GmbH
Gestational Diabetes Mellitus in Pregnancy, Vitamin D Deficiency
Effects of Vitamin D Supplementation on Glucose Metabolism in Women With Former Gestational Diabetes Mellitus
Gestational Diabetes Mellitus (GDM) and vitamin D deficiency are related to insulin resistance and impaired beta-cell function, with heightened risk for future development of diabetes.
- Trial name
- NCT01992133
- Testing
- Vitamin D3
- Where
- Malaysia
- Volunteers
- 26 people
- Sponsor
- RCSI & UCD Malaysia Campus
Healthy
Defining Vitamin D Insufficiency in School Age Children: A Randomized Placebo Controlled Trial of Vitamin D3
The study objective is to characterize the threshold levels of serum 25-hydroxyvitamin D for the definition of vitamin D insufficiency in 8-14 year old African American and Caucasian children.
- Trial name
- Vitamin D RCT (NCT00732758)
- Testing
- Vitamin D3 1000 IU
- Where
- United States
- Volunteers
- 157 people, healthy volunteers welcome
- Sponsor
- University of Pittsburgh
Healthy, Thiamine and Niacin Deficiency States
Natural Versus Synthetic Vitamin B Complexes in Human
In a cross-over study the investigators evaluate the effects of natural (Panmol-B-Complex) (Pan [Greek] = all; moles [Latin] = molecules/particles - brand name) versus synthetic vitamin B complexes to identify the bioavailability…
- Conditions
- Healthy, Thiamine and Niacin Deficiency States, Pyridoxine Deficiency, Folic Acid Deficiency Anemia, Dietary
- Trial name
- NCT03444155
- Testing
- Natural Panmol-B-Complex, Synthetic Vitamin B-Complex
- Where
- Austria
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Medical University of Graz
Vitamin D Deficiency, Polytrauma
Vitamin D and Bone Homeostasis in Ortho Polytrauma Patients
Although vitamin D is known to play a major role in multiple organ functions in healthy adults, including bone homeostasis, its role in the unique population of orthopaedic polytrauma patients has not been well described.
- Conditions
- Vitamin D Deficiency, Polytrauma, Orthopedic Disorder
- Trial name
- NCT03066817
- Testing
- Ergocalciferol 8000 IU/ML Oral Liquid [DRISDOL], Propylene Glycol
- Where
- United States
- Volunteers
- 60 people
- Sponsor
- New York City Health and Hospitals Corporation
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
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