Clinical trials: Cholecalciferol
Polycystic Ovary Syndrome
Effect of Vitamin D on Hormonal, Metabolic and Cardiovascular Risk Factors in Patients With Polycystic Ovary Syndrome
This is a double blind randomised placebo-controlled study involving women with polycystic ovary syndrome (PCOS). The patients will be randomised either to Vitamin D 3200 IU or placebo for three months.
- Trial name
- NCT02513381
- Testing
- Vitamin D3, 3200IU
- Where
- United Kingdom
- Volunteers
- 40 people
- Sponsor
- Hull University Teaching Hospitals NHS Trust
Chronic Obstructive Pulmonary Disease
This Study Include Chronic Obstructive Pulmonary Disease(COPD) Patients . Patients Were Vitamin D Deficient Age Range 40 to 80 Years, Smokers Patients Were Advised to Take Either Placebo or Vitamin D3 . Antioxidant Enzymes Were Assessed at Baseline and at 26th Weeks.
Vitamin D3 supplementation dose not increase plasma antioxidant enzymes level in COPD patients was the null hypothesis of the research.
- Trial name
- BSMMU (NCT04011930)
- Testing
- cholecalciferol
- Where
- Bangladesh
- Volunteers
- 40 people
- Sponsor
- Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh
Asthma-COPD Overlap Syndrome
This Study Include Asthma Chronic Obstructive Pulmonary Disease (COPD) Overlap Patients.Patients Were Vitamin D Deficient.Age Range 40-70 Years, Smokers.Patients Were Advised to Take Either Placebo or Vitamin D3.Lung Functions and Exercise Tolerance Were Assessed at Baseline and at 26th Weeks.
Vitamin D3 supplementation doen not change lung functions and exercise tolerance in vitamin D3 deficient ACO patient was the null hypothesis of the research.
- Trial name
- NCT03880734
- Testing
- Cholecalciferol
- Where
- Bangladesh
- Volunteers
- 70 people, healthy volunteers welcome
- Sponsor
- Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh
Muscle Pain, Joint Pain
Vitamin D3 Effects on Musculoskeletal Symptoms With Use of Aromatase Inhibitors
The Purpose of this study is to determine whether vitamin D3 supplements will decrease the muscle and bone pain that are reported by women who take Aromatase Inhibitors.
- Trial name
- NCT01509079
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 116 people
- Sponsor
- HealthPartners Institute
Respiratory Tract Infections, Asthma
DO IT Trial: Vitamin D Outcomes and Interventions In Toddlers
Vitamin D can be made in the skin by exposure to sunlight and can be found in certain foods. Vitamin D levels are alarmingly low in many North American children. Several health issues have been linked with low vitamin D.
- Conditions
- Respiratory Tract Infections, Asthma, Avitaminosis
- Trial name
- DO IT (NCT01419262)
- Testing
- Vitamin D - Cholecalciferol 400 IU, Vitamin D3 - Cholecalciferol 2000 IU
- Where
- 2 sites in Canada
- Volunteers
- 703 people, healthy volunteers welcome
- Sponsor
- The Hospital for Sick Children
Polycystic Ovary Syndrome, Vitamin D Deficiency/Insufficiency
The Effect of Calcium and Vitamin D Supplements on Metabolic and Hormonal Disturbances in Polycystic Ovary Syndrome Patients
The aim of this study is to investigate the safety and metabolic-hormonal efficiency of supplementation vitamin D deficient/insufficient PCOS women with (calcium +vitamin D + metformin) for 8 weeks compared to (placebo+…
- Trial name
- NCT03792984
- Testing
- Vitamin D3, Calcium Carbonate, Metformin
- Where
- 2 sites in Syria
- Volunteers
- 40 people
- Sponsor
- Damascus University
Human Immunodeficiency Virus
Effect of High Dose Vitamin D Supplementation on HIV Latency
HIV persists despite antiretroviral therapy (ART) and is associated with chronic inflammation. This inflammation is thought to prevent an effective immune response against the virus and is mediated at least in part by gut…
- Trial name
- VIVA (NCT03426592)
- Testing
- Vitamin D3, 10000 Intl Units Oral Capsule
- Where
- 4 sites in Australia
- Volunteers
- 30 people
- Sponsor
- University of Melbourne
Cardiovascular Disease, Diabetes
Effect of Vitamin D3 Supplementation on Cardiometabolic Risk
Supplementation studies with vitamin D have been performed where cardiometabolic risk markers have been assessed but these are few, and results are inconsistent. Hence, the purpose of this study is to determine: 1.
- Conditions
- Cardiovascular Disease, Diabetes, Bone Disease
- Trial name
- NCT02359214
- Testing
- Vitamin D3
- Where
- United Kingdom
- Volunteers
- 49 people, healthy volunteers welcome
- Sponsor
- University of Chester
Iron Deficiency, Anemia; Deficiency, Nutritional, With Poor Iron Absorption
A Study to Investigate the Effect of Vitamin D3 Supplementation on Iron Status in Iron Deficient Women
Iron is one of the most vital elements in humans as it plays a role in physiological functions such as transferring and storing oxygen, transporting electrons and catalysing numerous reactions, from oxidative metabolism to…
- Conditions
- Iron Deficiency, Anemia; Deficiency, Nutritional, With Poor Iron Absorption, Vitamin D Deficiency
- Trial name
- NCT02714361
- Testing
- Vitamin D3 supplement
- Where
- United Kingdom
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- University of Chester
Vitamin D Deficiency Disease
Vitamin D Supplementation in Warfighters
A genomics-based approach will target specific genes that may explain the response in biomarkers and symptoms before and after supplementation.
- Trial name
- NCT02954549
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 131 people, healthy volunteers welcome
- Sponsor
- Madigan Army Medical Center
Osteopenia/Osteoporosis
To Test the Effect of Calcifediol Hy.D Supplementation on Muscle Function and Bone Quality in Younger Postmenopausal Women With Osteopenia
Young postmenopausal women with osteopenia / or women with osteoporosis and a FRAX score below pharmacologic treatment indication have limited treatment options in the prevention of osteoporosis/treatment of osteopenia.
- Trial name
- NCT02527668
- Testing
- Calcifediol, Vitamin D3
- Where
- Switzerland
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- dsm-firmenich Switzerland AG
Vitamin D Deficiency
Effects of Vitamin D3 Supplementation on Antioxidant Enzymes Status in Vitamin D3 Deficient Asthma COPD Overlap (ACO) Patients
Asthma-COPD overlap (ACO) is a new entity in the world of respiratory ailments. The respiratory tract of these patients are continuously exposed to oxidants (due to cigarette smoking) causing oxidative stress.
- Trial name
- NCT03931889
- Testing
- Vitamin D3
- Where
- Bangladesh
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh
Thalassemia, Tuberculosis
Immunomodulatory Vitamin D in Thalassemia
Thalassemia becomes one of global health issue and so does Indonesia. In 2015, more than 7600 children were diagnosed as this hemoglobin genetic disease wherein anemia and lifetime blood transfusion contribute to their morbidity…
- Conditions
- Thalassemia, Tuberculosis, Vitamin D Deficiency
- Trial name
- ThalTB (NCT03919812)
- Testing
- Cholecalciferol supplementation
- Where
- Indonesia
- Volunteers
- 60 people
- Sponsor
- Universitas Padjadjaran
Age-Related Osteoporosis
Dose-dependent Effects of Vitamin D on Bone Health
We propose to conduct a randomized double blind trial of three doses of vitamin D, 400, 4000, and 10,000 International Units (IU) per day, to assess the effect on bone density and architecture as assessed by high resolution…
- Trial name
- NCT01900860
- Testing
- Vitamin D
- Where
- Canada
- Volunteers
- 311 people, healthy volunteers welcome
- Sponsor
- University of Calgary
Primary Hyperparathyroidism, Vitamin D Deficiency
Vitamin D Repletion in Primary Hyperparathyroidism
This study will look at the effect of 2 treatment regimens that contain vitamin D in a six-month treatment trial of patients with PHPT who are vitamin D deficient.
- Trial name
- NCT01306656
- Testing
- 10,000 IU Vitamin D3, Vitamin D
- Where
- United States
- Volunteers
- 9 people
- Sponsor
- Columbia University
Brain Neoplasms
The Effect of Vitamin D3 on Postoperative Pain in Patients Undergoing Craniotomy
Vitamin D is a hormone mainly synthesized in the skin in the presence of sunlight. Like other hormones, vitamin D plays a role in a wide range of processes in the body.
- Trial name
- NCT03614403
- Testing
- vitamin D
- Where
- Iran
- Volunteers
- 60 people
- Sponsor
- Shahid Beheshti University
HIV Infection
Vitamin D Absorption in HIV Infected Young Adults Being Treated With Tenofovir Containing cART
This is a 48 week randomized double-blind, placebo-controlled prospective cohort study of adolescents and young adults with HIV infection in the Adolescent Medicine Trials Network for HIV/AIDS Interventions (ATN) who are…
- Trial name
- NCT01751646
- Testing
- Vitamin D3 50,000 IU
- Where
- 17 sites in United States, Puerto Rico
- Volunteers
- 214 people
- Sponsor
- University of North Carolina, Chapel Hill
Vitamin D Deficiency, Sarcopenia
Impact of Vitamin D on 25-hydroxyvitamin D Levels and Physical Function
This one-year study will test the hypothesis that supplementation with vitamin D will improve lower extremity muscle performance in older men and women with vitamin D insufficiency.
- Trial name
- NCT02293187
- Testing
- vitamin D3
- Where
- United States
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Tufts University
Recurrent Respiratory Tract Infections
Impact of Vitamin D Supplementation on Recurrent Respiratory Infections in Paediatric Primary Care.
Up to date, some clinical trial have evaluated the efficacy and safety of Vitamin D supplementation in children with RRI, with no conclusive information.
- Trial name
- NCT02617771
- Testing
- Vitamin D3
- Volunteers
- 84 people
- Sponsor
- Policlinico Hospital
Healthy Volunteers
Acute Effect of Vitamin D3 Supplementation
The investigators have previously completed a clinical trial with long-term vitamin D3 supplementation in healthy humans during a season with negligible ultraviolet B radiation (UVB) in terms of serum 25-hydroxy vitamin D…
- Trial name
- NCT03849833
- Testing
- cholecalciferol, Vitamin D3
- Where
- Denmark
- Volunteers
- 19 people, healthy volunteers welcome
- Sponsor
- Bispebjerg Hospital