Try our beta test site
IMPORTANT: Listing of a study on this site does not reflect endorsement by the National Institutes of Health. Talk with a trusted healthcare professional before volunteering for a study. Read more...
382 studies found for:    Open Studies | "Vitamins"
Show Display Options
RSS Create an RSS feed from your search for:
Open Studies | "Vitamins"
Need help? See RSS Feeds
Choose a feed type:
Show studies that were first received in the last 14 daysShow studies that were first received in the last 14 days
Show studies added or modified in the last 14 daysShow studies that were added or modified in the last 14 days
Rank Status Study
1 Recruiting Determination of Vitamin D Dose to Maintain Sufficiency Amongst Indian and Malay Women in the Tropics
Condition: Vitamin D Deficiency
Intervention: Drug: Vitamin D3
2 Recruiting The GLOBAL Vitamin D Study. A Genomic, Transcriptomic, Proteomic and Metabolomic Approach
Condition: Vitamin D Deficiency
Interventions: Drug: Cholecalciferol;   Drug: Placebo
3 Not yet recruiting Vitamin D to Improve Nutrition Prior to Bariatric Surgery and Investigate the Relationship With Negative Outcomes
Conditions: Vitamin D Deficiency;   Vitamin D Insufficiency
Interventions: Dietary Supplement: Vitamin D;   Other: Placebo;   Other: Standard of Care
4 Recruiting Nutritional Requirements for Vitamin D in Pregnant Women
Condition: Vitamin D Deficiency
Interventions: Dietary Supplement: 10 mcg Vitamin D3;   Dietary Supplement: 20 mcg Vitamin D3;   Dietary Supplement: Placebo
5 Recruiting The Effect of Vitamin D Supplementation on Cardiovascular Risk Factors
Condition: Vitamin D Deficiency
Interventions: Drug: Cholecalciferol;   Drug: Placebo
6 Recruiting An Evaluation of the Effect of Vitamin D Supplementation on the Cognitive Function of Older Subjects With Low Levels of This Vitamin
Condition: VITAMIN D DEFICIENCY
Intervention: Drug: Vitamin D
7 Recruiting Effects of Vitamin D Insufficiency in Man
Condition: Vitamin D Deficiency
Interventions: Dietary Supplement: Vitamin D2;   Dietary Supplement: Vitamin D3
8 Recruiting Personalized Vitamin D Supplementation in European and African Americans
Condition: Vitamin D Deficiency
Intervention: Dietary Supplement: Vitamin D
9 Recruiting Vitamin D Levels Following Topical Application of Vitamin D Ointment
Condition: Vitamin D Deficiency
Intervention: Drug: Vitamin D3
10 Recruiting Vitamin D Supplementation in Warfighters
Condition: Vitamin D Deficiency Disease
Intervention: Dietary Supplement: Vitamin D3
11 Recruiting Topical Delivery of Vitamin D3 as Vitamin D Supplementation
Condition: Vitamin D Deficiency
Intervention: Drug: topical vitamin D3 in intervention group
12 Not yet recruiting 'Palliative-D' Vitamin D to Palliative Cancer Patients
Condition: Vitamin D Deficiency
Interventions: Drug: Cholecalciferol;   Device: Placebo
13 Not yet recruiting Evaluation of a Transdermal Vitamin D3 Delivery System, D3forME
Condition: Vitamin D Deficiency
Interventions: Dietary Supplement: Transdermal D Patch;   Dietary Supplement: Oral vitamin D3;   Dietary Supplement: Placebo patch;   Dietary Supplement: Oral placebo
14 Recruiting Effects of Vitamin D and Calcium Supplementation on Health and Well-being of Vitamin D Deficient UAE Citizens
Condition: Vitamin D Deficiency
Interventions: Dietary Supplement: Vitamin D and calcium;   Dietary Supplement: Vitamin D;   Dietary Supplement: Calcium;   Dietary Supplement: Placebo
15 Recruiting High Dose Vitamin D Replacement in Patients Undergoing Hematopoietic Stem Cell Transplantation
Condition: Vitamin D Deficiency
Intervention: Drug: Vitamin D
16 Not yet recruiting Follicular Fluid, Bioavailable Vitamin D and Embryo Quality Markers
Condition: Vitamin D Deficiency
Intervention:
17 Not yet recruiting Empirical Comperative Study Of Variation Blood Level Antibody Vitamin D at Different Groups Of Patients Compared Healthy Peoples
Condition: Vitamin D Deficiency
Intervention: Other: Blood samples
18 Recruiting Efficacy of Biofortified Maize to Improve Maternal and Infant Vitamin A Status
Condition: Vitamin A Deficiency
Interventions: Dietary Supplement: Conventional white maize;   Dietary Supplement: Provitamin A carotenoid biofortified maize;   Dietary Supplement: Preformed vitamin A fortified maize
19 Recruiting Vitamin Deficiencies and Suppletion in Morbid Obesity
Condition: Vitamin B12 Deficiency
Interventions: Drug: Hydroxocobalamin;   Drug: FitForMe vitamin B12
20 Recruiting Study To Understand Fall Reduction and Vitamin D in You
Conditions: Vitamin D Deficiency;   Falls
Interventions: Dietary Supplement: 200 IU/d cholecalciferol;   Dietary Supplement: 1000 IU/d cholecalciferol;   Dietary Supplement: 2000 IU/d cholecalciferol;   Dietary Supplement: 4000 IU/d cholecalciferol

   Previous Page Studies Shown (1-20) Next Page (21-40) Show next page of results    Last Page
Study has passed its completion date and status has not been verified in more than two years.