Clinical trials: Vitamin Supplementation
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
Diabetes Mellitus, Type 1, Hypoglycemia
Pilot Study of OMEGA-3 and Vitamin D in High-Dose in Type I Diabetic Patients
The investigator propose to test the safety and efficacy of a regimen that combines Omega-3 Fatty Acids and Vitamin D in a design that considers timing and duration of administration in relation to their effects and predicted…
- Conditions
- Diabetes Mellitus, Type 1, Hypoglycemia, Diabetes Mellitus, Diabetes, Autoimmune
- Trial name
- POSEIDON (NCT03406897)
- Testing
- Cholecalciferol, Omega 3 fatty acid
- Where
- United States
- Volunteers
- 27 people
- Sponsor
- Rodolfo Alejandro
Reticular Pseudodrusen (RPD), Age-Related Macular Degeneration
Vitamin A Palmitate Supplementation in Patients With Reticular Pseudodrusen (RPD) and Delayed Dark Adaptation
Background: Age-related macular degeneration (AMD) is an eye disease. It is the leading cause of vision loss in people over 55 in the U.S. Changes in the eye can make it difficult for they eye to adjust to low light.
- Trial name
- NCT03478878
- Testing
- Vitamin A Palmitate
- Where
- United States
- Volunteers
- 9 people
- Sponsor
- National Eye Institute (NEI)
Dyslipidemias
Effect of Vitamin D Supplementation on Exercise Adaptations in Patients on Statin Therapy
Statins along with lifestyle modifications including exercise are commonly prescribed to patients with type 2 diabetes. American diabetes association recommends using moderate-intensity statin and lifestyle therapy for patients…
- Trial name
- NCT02030041
- Testing
- Vitamin D, Simvastatin
- Where
- India
- Volunteers
- 33 people
- Sponsor
- Post Graduate Institute of Medical Education and Research, Chandigarh
Multiple Sclerosis, Relapsing-remitting
Pharmacokinetics of Vitamin D in Multiple Sclerosis and in Health
This is a pilot study of oral vitamin D supplementation to determine if patients with Multiple Sclerosis (MS) and healthy individuals attain a similar increase in serum 25-hydroxyvitamin D levels.
- Trial name
- NCT01667796
- Testing
- Vitamin D3
- Where
- 2 sites in United States
- Volunteers
- 57 people, healthy volunteers welcome
- Sponsor
- Johns Hopkins University
Healthy Participants
Influenza Virus Vaccine Plus Vitamin A and D Supplements for Prevention of Respiratory Virus Infections in Children
Children are particularly vulnerable to respiratory virus infections, especially influenza. Vitamin A \& D deficiencies are associated with vulnerability to infectious diseases of the respiratory tract.
- Trial name
- NCT02649192
- Testing
- Influenza virus vaccine, Vitamins A and D
- Where
- United States
- Volunteers
- 87 people, healthy volunteers welcome
- Sponsor
- St. Jude Children's Research Hospital
Insulin Sensitivity
Effect of Vitamin D Replacement on Insulin Sensitivity
Healthy subjects with low Vitamin D levels will be randomly assigned to either Vitamin D replacement or placebo for a period of 8 weeks.
- Trial name
- NCT01268111
- Testing
- Ergocalciferols
- Where
- United States
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Texas Tech University Health Sciences Center
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
Actinic Keratosis
Vitamin D Supplementation as a Neoadjuvant for Photodynamic Therapy of Actinic Keratoses
This study is open to individuals with Actinic Keratoses (skin lesions that have the potential to turn into skin cancer), who are receiving photodynamic therapy (PDT) as part of their clinical care.
- Trial name
- NCT04140292
- Testing
- Photodynamic therapy (PDT), Vitamin D3
- Where
- United States
- Volunteers
- 75 people
- Sponsor
- Case Comprehensive Cancer Center
Hypovitaminosis D
Cholecalciferol Supplementation for Sepsis in the ICU
Sepsis in a clinical entity that occurs in patients with serious infections. Though the severity of illness may vary, every year, approximately 1.6 million Americans are treated for sepsis.
- Trial name
- CSI (NCT01896544)
- Testing
- Cholecalciferol
- Where
- United States
- Volunteers
- 30 people
- Sponsor
- Massachusetts General Hospital
Pre-diabetes
Vitamin D in Minorities With Prediabetes
Vitamin D supplementation in minority subjects with both pre-diabetes and low vitamin D levels will delay the development of diabetes.
- Trial name
- NCT00876928
- Testing
- vitamin D
- Where
- United States
- Volunteers
- 117 people
- Sponsor
- Charles Drew University of Medicine and Science
Obesity, Vitamin D Deficiency
Vitamin D Supplementation Reduces Renin-Angiotensin System Activity in Obesity
Hypothesis: Vitamin D supplementation lower renin-angiotensin system activity in obesity. Specific Aim: To investigate whether Vitamin D supplementation in obesity improves the vascular sensitivity to angiotensin II.
- Conditions
- Obesity, Vitamin D Deficiency, Hypertension
- Trial name
- NCT01068418
- Testing
- Vitamin D (cholecalciferol)
- Where
- United States
- Volunteers
- 26 people
- Sponsor
- Brigham and Women's Hospital
Obesity
Effect of Vitamin D3 Supplementation on Insulin Resistance and Cardiovascular Risk Factors in Obese Adolescents
The prevalence of obesity has reached epidemic proportions nationally as well as internationally. Currently, 16 % of American adolescents are obese.
- Trial name
- NCT00858247
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 51 people, healthy volunteers welcome
- Sponsor
- Mayo Clinic
Prostate Cancer
Vitamin D Supplementation in Veterans With Early-Stage Prostate Cancer
Vitamin D promotes the differentiation of prostate cancer cells, maintains the differentiated phenotype of prostate epithelial cells, and can induce prostate cancer cell death, raising the possibility that vitamin D deficiency…
- Trial name
- vit D & PCa (NCT00953225)
- Testing
- vitamin D3
- Where
- 2 sites in United States
- Volunteers
- 83 people
- Sponsor
- VA Office of Research and Development
Human Immunodeficiency Virus (HIV)
Vitamin D3 Supplementation in Patients With HIV: Effects on Interleukin-6 Levels and CD4 Counts
This study aims to evaluate the effect of Vitamin D3 supplementation on inflammatory markers and immune status in patients with HIV who are receiving antiretroviral therapy.
- Trial name
- NCT07553052
- Testing
- Vitamin D3, Antiretroviral (ARV) medications
- Where
- Indonesia
- Volunteers
- 20 people
- Sponsor
- Universitas Sebelas Maret
Knee Osteoarthritis
Evaluating Vitamin D3 Supplement on Post-Op Outcomes
The aim of this study is to determine if vitamin D supplementation is associated with differences in short-term recovery in patients following total knee arthroplasty compared to patients who do not receive supplementation.
- Trial name
- NCT04177758
- Testing
- Vitamin D, Control
- Where
- United States
- Volunteers
- 137 people
- Sponsor
- Rush University Medical Center
Vitamin D Deficiency, Pre-Eclampsia
Effect of Vitamin D3 Supplementation in Pregnancy on Risk of Pre-eclampsia
Vitamin D deficient pregnant ladies were selected and randomized into 2 groups for routine daily dose of multivitamin (400IU vitamin D3) versus maximum safest treatment daily dose (4000IU vitamin D3).
- Trial name
- NCT03101150
- Testing
- 400 IU Vitamin D3, 4000 IU Vitamin D3
- Volunteers
- 179 people, healthy volunteers welcome
- Sponsor
- King Fahad Medical City
Vitamin D Deficiency
Controlled Trial of Prenatal Vitamin D3 Supplementation to Prevent Vitamin D Deficiency in Mothers and Their Infants
The purpose of this research study is to compare the effects of higher dose vitamin D with commonly recommended dose in pregnant women to see which is better in achieving and/or maintaining sufficient vitamin D blood levels…
- Trial name
- PA 03-103 (NCT00610688)
- Testing
- Prenatal Vitamin, Cholecalciferol (Vitamin D3)
- Where
- 2 sites in United States, United Arab Emirates
- Volunteers
- 192 people, healthy volunteers welcome
- Sponsor
- Children's Hospital Medical Center, Cincinnati
Obesity, Vitamin D Deficiency
Vitamin D Supplementation in Psychiatric Illnesses
Children and adolescents with psychiatric illnesses who are treated with medications called second generation antipsychotic agents (SGA) often gain excessive weight during their treatment with these medications.
- Conditions
- Obesity, Vitamin D Deficiency, Psychosis, Schizophrenia
- Trial name
- VDSS (NCT01004354)
- Testing
- Ergocalciferols
- Where
- United States
- Volunteers
- 12 people
- Sponsor
- University of Massachusetts, Worcester
Vitamin D Deficiency
Improving the Understanding of the Response to Vitamin D Supplementation
It is the investigators hypothesis that the current method of evaluating vitamin D status, measuring circulating 25-hydroxy vitamin D is not providing the full metabolic picture, and is therefore inadequate.
- Trial name
- NCT01465178
- Testing
- cholecalciferol
- Where
- United States
- Volunteers
- 62 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison