Clinical trials: Cholecalciferol
Cardiovascular Disease
Mussel Intake and Vitamin D Status in Humans
A significant proportion of the United Kingdom population have inadequate levels of vitamin D in their blood. Vitamin D is a fat-soluble vitamin that is essential for the growth and maintenance of healthy bones through increasing…
- Trial name
- Mussel (NCT02982525)
- Testing
- No Mussels, One mussel portion, Two mussel portions
- Where
- United Kingdom
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- University of Aberdeen
Fractures, Osteoporosis
OSTPRE-Fracture Prevention Study
The purpose of this study is to determine the effect of calcium 1000 mg/d and vitamin-D3 800 IU/d divided in two daily doses on the incidence of falls and fractures, bone mineral density and bone metabolism in postmenopausal…
- Trial name
- OSTPRE-FPS (NCT00592917)
- Testing
- calcium carbonate and cholecalciferol
- Where
- Finland
- Volunteers
- 3,432 people
- Sponsor
- Kuopio University Hospital
Hypovitaminosis D, Insulin Resistance
Comparative Effectiveness of Vitamin D and Repletion Strategies
The importance of vitamin D (VitD) in the prevention and treatment of human health conditions has gained increased attention in recent years.
- Conditions
- Hypovitaminosis D, Insulin Resistance, Diabetes
- Trial name
- CEDARS (NCT01524874)
- Testing
- Vitamin D3
- Where
- 2 sites in United States
- Volunteers
- 66 people, healthy volunteers welcome
- Sponsor
- Bastyr University
Vitamin D, Iron Deficiency and Overload
Can Vitamin D Replacement Correct Chronic Disease Anemia?
This prospective, single-arm interventional pilot study evaluated whether vitamin D supplementation alone improves iron status in adults with inflammatory bowel disease (IBD) who are in clinical remission and have concurrent…
- Conditions
- Vitamin D, Iron Deficiency and Overload, Inflammatory Bowel Disease (Crohn's Disease; Ulcerative Colitis)
- Trial name
- NCT07673497
- Testing
- Cholecalciferol (Vit D3)
- Where
- Turkey (Türkiye)
- Volunteers
- 43 people
- Sponsor
- Gazi University
Femur Neck Fracture
Effect of Teriparatide on Hip Fracture Healing
The purpose of this study is to see whether teriparatide, given for 6 months versus placebo, will improve the healing of hip (femoral neck) fractures that are repaired during surgery using certain types of orthopedic screws.
- Trial name
- NCT01473589
- Testing
- Teriparatide, Calcium supplementation, Vitamin D supplementation
- Where
- 92 sites in United States, Australia and 17 more
- Volunteers
- 122 people
- Sponsor
- Eli Lilly and Company
Development, Child
The Relationship Between VDR Gene Polymorphism and Children's Physical and Intellectual Development
This study was used to determine the relationship between vitamin D receptor gene polymorphism and children's physical and intellectual development, further adjust the doses of vitamin D supplementation after birth, and provide…
- Trial name
- RVDRGPCPID (NCT03742310)
- Testing
- Vitamin D
- Where
- China
- Volunteers
- 500 people, healthy volunteers welcome
- Sponsor
- First Affiliated Hospital Xi'an Jiaotong University
Asthma
Efficacy of Vitamin D on the Clinical Management of Pediatric Patients With Asthma
Asthma is a disease that represents a public health problem worldwide, there are several barriers, especially in pediatric patients with this disease, them, prevent the adequate control of their condition, in addition every day…
- Trial name
- NCT02571660
- Testing
- GINA treatment fot asthma +vit.D low supplementation dose, GINA treatment fot asthma +vit.D high supplementation dose
- Where
- Mexico
- Volunteers
- 100 people
- Sponsor
- Hospital General Naval de Alta Especialidad - Escuela Medico Naval
Reproductive Effects, Pregnancy
Vitamin D and Pregnancy: Camden Study
Vitamin D is present in food either naturally or by fortification and included in nutritional supplements. It is also synthesized photochemically by the skin from ultraviolet B radiation.
- Trial name
- NCT02032459
- Where
- United States
- Volunteers
- 1,141 people, healthy volunteers welcome
- Sponsor
- Rowan University
Vitamin D Deficiency
The Role of Narrowband Ultraviolet B Exposure in the Maintenance of Vitamin D Levels During Winter
The investigators investigated the ability of narrowband ultraviolet B (nbUVB) treatment in the maintenance of vitamin D levels achieved during the summer in Finland.
- Trial name
- NCT02275650
- Testing
- nbUVB
- Where
- 2 sites in Finland
- Volunteers
- 37 people, healthy volunteers welcome
- Sponsor
- Joint Authority for Päijät-Häme Social and Health Care
Healthy
Safety and Tolerability of Kiddi® Pharmaton Fizz Effervescent Tablets in Children
Study to evaluate the tolerability and safety of Kiddi® Pharmaton Fizz effervescent tablets, in children of 6 to 14 years, comparing a given formula with an improved one with reduced mineral content (qualitatively equivalent to…
- Trial name
- NCT02184325
- Testing
- Kiddi® Pharmaton Fizz, effervescent tablets, Kiddi® Pharmaton Fizz, effervescent tablets: marketed formula, Comparator product
- Volunteers
- 96 people, healthy volunteers welcome
- Sponsor
- Boehringer Ingelheim
Vitamin D, Dietary Supplement
Non-inferiority RCT on Fish Waste-Derived vs. Synthetic Vitamin D Supplementation in Healthy Adults With Suboptimal Vitamin D Levels
Vitamin D is a fat-soluble vitamin with hormone-like properties, essential for numerous physiological processes in humans. It plays a central role in maintaining calcium and phosphorus homeostasis, promoting intestinal absorption…
- Trial name
- NCT07127796
- Testing
- Dietary Supplement - Fish-derived Vitamin D, Dietary Supplement - Synthetic Vitamin D
- Volunteers
- 48 people
- Sponsor
- University of Bologna
Fibromyalgia, Chronic Pain Syndrome
Isokinetic Muscle Strength, Torque, Ultrasonographic Muscle Thickness in Fibromyalgia Syndrome: A Case-Control Study
Fibromyalgia syndrome (FMS) is a chronic disease characterized by widespread body pain and tenderness in specific points, which may be accompanied by sleep disturbances, depression, fatigue, cognitive symptoms such as memory…
- Conditions
- Fibromyalgia, Chronic Pain Syndrome, Muscle Thinning, Sleep
- Trial name
- NCT07649824
- Where
- Turkey (Türkiye)
- Volunteers
- 80 people
- Sponsor
- Kirsehir Ahi Evran Universitesi
Muscle Weakness
Effect of PROGRESSive Training and Teststerone in Older Frail Men
In this scientific clinical investigation we will test whether testosterone and progressive resistance training can improve muscle strength and reduce the risk of falls in older men.
- Trial name
- PROGRESS (NCT02873559)
- Testing
- testosterone, Progressive muscle training
- Where
- 2 sites in Denmark
- Volunteers
- 192 people, healthy volunteers welcome
- Sponsor
- University Hospital, Gentofte, Copenhagen
Diabetes Mellitus, Type 1
Influence of Vitamin D on Vascular Function in Adolescents and Young Adults With Type 1 Diabetes
The purpose of this study is to study the role of low vitamin D levels on the health of blood vessels or vascular function in adolescents and young adults with type 1 diabetes.
- Trial name
- NCT01103817
- Testing
- Vitamin D
- Where
- Canada
- Volunteers
- 33 people
- Sponsor
- The Hospital for Sick Children
Breast Cancer Prevention, Mammographic Density
RANKL Inhibition and Breast Tissue Biomarkers
A robust knowledge of how to reduce breast density could play a key role in breast cancer prevention in premenopausal women, but viable preventative targets to reduce breast density-associated breast cancer risk are yet to be…
- Trial name
- NCT03629717
- Testing
- Ultrasound-guided core needle biopsy, Denosumab, Blood draw
- Where
- United States
- Volunteers
- 10 people
- Sponsor
- Washington University School of Medicine
Burn, Growth
Bone Mineral Density, Body Composition and Growth Following Severe Burn Injury
The purpose of this study is two-fold. The first is to establish that bone mineral density is diminished among children admitted to this regional burn center as compared to healthy non-burned children.
- Conditions
- Burn, Growth, Malnutrition
- Trial name
- NCT00285090
- Testing
- Calcium, Vitamin D, Calcium,Vitamin D, Calcium, VitaminD
- Where
- United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Kathy Prelack, PhD, RD
Cirrhosis, Vitamin D Deficiency
Vitamin D Supplementation in Cirrhotic Patients
Previous studies suggested that vitamin D deficiency is highly prevalent in cirrhotic patients and is related to the degree of liver dysfunction as well as mortality.
- Trial name
- NCT02009748
- Testing
- Vitamin D supplementation
- Where
- 2 sites in Austria
- Volunteers
- 36 people
- Sponsor
- Medical University of Graz
Infertility, Female, Infertility
Vitamin D and Polycystic Ovarian Syndrome (PCOS)
Primary Objectives: To evaluate the efficacy of metformin and Vitamin D supplementation on serum insulin and serum androgen levels (Total testosterone, Steroid Hormone Binding Globulin, Free Androgen Index) levels compared…
- Conditions
- Infertility, Female, Infertility, Vitamin D Deficiency
- Trial name
- NCT03989778
- Testing
- Vitamin D
- Where
- 2 sites in Pakistan
- Volunteers
- 84 people, healthy volunteers welcome
- Sponsor
- Aga Khan University
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
Sub-optimal Vitamin D Status, Pre-diabetes
Effect of Vitamin D3 Supplementation on Insulin Resistance- The DIR Study
Insulin resistance is a state where the body does not respond as it should to the insulin it produces. Individuals who are insulin resistant are at increased risk of both heart disease and type 2 diabetes; importantly, diabetes…
- Conditions
- Sub-optimal Vitamin D Status, Pre-diabetes, Insulin Resistance
- Trial name
- NCT01889810
- Testing
- Vitamin D3 supplementation
- Where
- United Kingdom
- Volunteers
- 81 people, healthy volunteers welcome
- Sponsor
- Queen's University, Belfast
The first 1,020 results can be paged through. Add a filter or change the sort order to reach the rest.