Clinical trials: Vitamin D Deficiency, completed
Vitamin D Deficiency
Absorption Kinetics and Efficacy of Vitamin D Enriched Supplements in Older Adults.
The proposed study will examine vitamin D bioavailability when 20µg of vitamin D is consumed in 5 different forms: i) a vitamin D enriched pre-formed mixed micelle dairy drink ii) a vitamin D enriched olive oil dairy drink iii) a…
- Trial name
- NCT04935034
- Testing
- Vitamin D supplement
- Where
- Ireland
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- University College Dublin
Vitamin D Deficiency, Rickets
Vitamin D Supplementation in Breastfeeding Women
Adequate vitamin D is essential for proper infant growth and development. However, human milk is low in vitamin D, and most infants do not receive recommended supplementation.
- Conditions
- Vitamin D Deficiency, Rickets, Infant Nutrition Disorders
- Trial name
- NCT01240265
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Mayo Clinic
D Vitamin Deficiency, Osteocalcin
Serum Vitamin D and Gingival Crevicular Fluid Levels of Osteocalcin and N-Terminal Telopeptide
This study examines the relationship between serum vitamin D levels and bone metabolism markers-osteocalcin and N-terminal telopeptide (NTx)-in gingival crevicular fluid (GCF) of periodontally healthy and periodontitis patients.
- Conditions
- D Vitamin Deficiency, Osteocalcin, Gingival Crevicular Fluid
- Trial name
- NCT06871631
- Where
- Turkey (Türkiye)
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Ondokuz Mayıs University
Deficiency, Vitamin D, Diabetes, Gestational
The Relation Between Vitamin D and Gestational Diabetes Mellitus
Gestational diabetes mellitus (GDM) is defined as any degree of glucose intolerance with the onset or first recognition during pregnancy.
- Trial name
- NCT03665974
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Hacettepe University
Asthma, Bronchial
Efficacy of Calcifediol Supplementation in Asthma Control in Asthmatic Patients With Vitamin D Deficiency (ACViD)
Introduction: There are many cross-sectional studies in children and adults indicating that low vitamin D levels in asthmatic patients are correlated with poorer asthma control, poorer lung function, decreased response to…
- Trial name
- ACViD (NCT02805907)
- Testing
- Calcifediol
- Where
- Spain
- Volunteers
- 112 people
- Sponsor
- MurciaSalud
Diabetic Foot Ulcer, Vitamin D Deficiency
High-Dose Vitamin D3 for Diabetic Foot Ulcer Healing: Randomized Controlled Trial
This randomized, double-blind, placebo-controlled clinical trial aims to evaluate the effectiveness of high-dose vitamin D3 supplementation in improving diabetic foot ulcer (DFU) healing.
- Conditions
- Diabetic Foot Ulcer, Vitamin D Deficiency, Wound Healing Disorder
- Trial name
- DFU (NCT07139964)
- Testing
- Vitamin D3
- Where
- Indonesia
- Volunteers
- 24 people
- Sponsor
- Universitas Sriwijaya
Calcium Deficiency, Vitamin D Deficiency
Human Pharmacology Trial of Calcium-vitamin D3 Tablet in Healthy Participants
The purpose of this study is to demonstrate that the intestinal absorption of calcium from a newly developed calcium carbonate-vitamin D3 chewable tablet formulation increases the amount of calcium excreted in urine and decreases…
- Trial name
- Osteopro (NCT01639222)
- Testing
- Calcium 500 mg and Vitamin D3 800 IU, Low calcium meals
- Where
- Germany
- Volunteers
- 55 people, healthy volunteers welcome
- Sponsor
- Takeda
Fibrous Dysplasia Of Bone
Burosumab for Fibroblast Growth Factor-23 Mediated Hypophosphatemia in Fibrous Dysplasia
Background: Fibrous dysplasia (FD) is a disorder that affects bone growth. Affected bone tissue is weakened, and people with FD are prone to deformities, fractures, and other problems.
- Trial name
- NCT05509595
- Testing
- Burosumab
- Where
- United States
- Volunteers
- 12 people
- Sponsor
- National Institute of Dental and Craniofacial Research (NIDCR)
Vitamin d Deficiency, Central Retinal Vein Occlusion
Vitamin D Levels in Patients With Central Retinal Vein Occlusion- a Prospective Controlled Study
Retinal vein occlusion (RVO) is a common vascular disease of the eye. Studies have shown that the risk of venous thrombosis is higher in winter so even concerning RVO.
- Trial name
- NCT01793181
- Where
- Sweden
- Volunteers
- 216 people
- Sponsor
- St. Erik Eye Hospital
Hemodialysis Complication, Vitamin D Deficiency
Cholecalciferol on Hemodialysis Patients
Screening the prevalence of vitamin D deficiency among Egyptian hemodialysis patients on a single center (Ain Shams University hospital).
- Conditions
- Hemodialysis Complication, Vitamin D Deficiency, Vascular Calcification
- Trial name
- NCT03602430
- Testing
- Cholecalciferol
- Where
- Egypt
- Volunteers
- 60 people
- Sponsor
- Ain Shams University
Vitamin D Deficiency in Older Persons
Daily Vitamin D Supplementation Compared to a Loading Dose and Monthly Supplementation in Elderly Nursing Home Residents
Vitamin D deficiency is common in older persons, in particular in residents of nursing homes. This is mainly explained by the fact that older persons do not often go outside in the sunshine.
- Trial name
- VIDIV (NCT01168544)
- Testing
- loading dose Vitamin D and 50.000 IU vit D3/month, loading dose and 25.000 IU vit D3/month, Vitamin D 800 IU /day
- Where
- Netherlands
- Volunteers
- 160 people
- Sponsor
- Rijnstate Hospital
Nutritional Deficiency
The Use of the 25 (OH) D Saliva Test as a Substitute for the 25 (OH) D Serum Test in Healthy People
Routine examination of vitamin D levels is carried out by checking serum 25 (OH)D levels, which indicate circulating vitamin D levels.
- Trial name
- NCT04655664
- Testing
- not currently consumed vitamin D supplements regularly, consumed vitamin D supplements regularly
- Where
- Indonesia
- Volunteers
- 56 people, healthy volunteers welcome
- Sponsor
- Universitas Sumatera Utara
Vitamin D Deficiency
Safety, Efficacy, and Feasibility of High-dose Cholecalciferol in Pediatric Patients With Cystic Fibrosis
Children with Cystic Fibrosis, ages greater than and equal to 36 months of age and less than or equal to 18 years of age, with a 25OHD level less than 30 ng/dL will be asked to participate in this study.
- Trial name
- NCT02613884
- Testing
- Treatment
- Where
- United States
- Volunteers
- 26 people, healthy volunteers welcome
- Sponsor
- Johns Hopkins All Children's Hospital
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
Prediabetes, Vitamin D Deficiency
Oral Cholecalciferol in Prevention of Type 2 Diabetes Mellitus
Type 2 diabetes mellitus (T2DM) is a major public health problem .Prevalence of vitamin D deficiency is also high i.e. 78-96% in different groups of population in north India.
- Trial name
- NCT01436916
- Testing
- oral cholecalciferol + life style counselling
- Where
- India
- Volunteers
- 50 people
- Sponsor
- Post Graduate Institute of Medical Education and Research, Chandigarh
Polycystic Ovary Syndrome, Hypovitaminosis D
The Effect of Vitamin D Supplementation Among Overweight Jordanian Women With Polycystic Ovary Syndrome (PCOS)
This is a prospective double-blind, randomized, parallel-group, placebo-controlled trial designed to examine the effect of supplementation with 50,000 IU vitamin D3 for 3 months on Polycystic Ovary Syndrome (PCOS) prognosis…
- Trial name
- NCT02328404
- Testing
- 50,000 IU vitamin D3
- Where
- Jordan
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Hayat Pharmaceutical Co. PLC
Renal Dialysis, Vitamin D Deficiency
Vitamin D Supplementation in Kidney Disease
This is a double-blind placebo controlled pilot study to determine if vitamin D supplementation in hemodialysis (HD) patients will improve physical function and cognition.
- Trial name
- NCT01229878
- Testing
- Cholecalciferol (Vitamin D)
- Where
- United States
- Volunteers
- 20 people
- Sponsor
- VA Office of Research and Development
Vitamin D Deficiency
The Effect of Combinatorial Nutritional Supplementation on Immune Function in Healthy Older Adults
Many older adults do not get enough zinc, vitamin C and vitamin D, and this can be related to decreased ability to fight infection.
- Trial name
- NCT02876315
- Testing
- Redoxon VI
- Where
- United States
- Volunteers
- 42 people, healthy volunteers welcome
- Sponsor
- Oregon State University
Ergocalciferol
Pilot Study: The Effect of Ergocalciferol on Plasma Mucin-1 Levels
To determine if a one-time oral administration of ergocalciferol results in a decline in plasma mucin-1 levels in healthy individuals and individuals with ADTKD-MUC1.
- Trial name
- NCT03747523
- Testing
- Ergocalciferol
- Where
- United States
- Volunteers
- 44 people, healthy volunteers welcome
- Sponsor
- Wake Forest University Health Sciences
Hypovitaminosis D
High Dose Preoperative Cholecalciferol Supplementation and Perioperative Vitamin D Status
A growing body of evidence suggests that robust postoperative immune function is associated with a lower risk of surgical site infections (SSIs).
- Trial name
- NCT01689779
- Testing
- 100,000 IU cholecalciferol
- Where
- United States
- Volunteers
- 60 people
- Sponsor
- Massachusetts General Hospital