List Results
Refine Search
Results by Topic
Results on Map
Search Details
Found 2777 studies with search of: vitamins
Hide studies that are not seeking new volunteers.
Hide studies with unknown recruitment status.
  Display Options
Rank Status Study
1 Completed Study of Vitamin C, Vitamin E and Their Combination to Treat Restless Legs Syndrome in Hemodialysis Patients
Conditions: Restless Legs Syndrome;   Kidney Failure, Chronic
Interventions: Drug: Vitamin C & Vitamin E;   Drug: Vitamin C;   Drug: Vitamin E;   Drug: Vitamin C Placebo & Vitamin E Placebo
2 Completed Trial to Assess Vitamin D Requirements in Lactating Women
Conditions: Vitamin D Deficiency;   Vitamin D Insufficiency
Interventions: Drug: Cholecalciferol (Vitamin D3);   Drug: Calcium Carbonate;   Drug: Placebo - gelatin capsule
3 Recruiting Treatment of Vitamin D Insufficiency
Conditions: Vitamin D Status;   Secondary Hyperparathyroidism;   Post-Menopause
Interventions: Drug: High Dose Vitamin D3;   Drug: Low Dose Vitamin D3;   Drug: Placebo
4 Active, not recruiting Vitamin B6, B12, Folic Acid and Exercise in Parkinson's Disease
Condition: Parkinson's Disease
Interventions: Dietary Supplement: PD vitamin supplementation;   Other: PD exercise intervention;   Other: PD vitamin + exercise
5 Completed Vitamins, Breastmilk HIV Shedding, and Child Health
Condition: Maternal and Child Health Outcomes
Interventions: Dietary Supplement: Vitamin A alone;   Dietary Supplement: Multivitamins excluding vitamin A;   Dietary Supplement: multivitamins including vitamin A;   Other: Placebo
6 Not yet recruiting Determination of Effective Vitamin D Replacement and Monitoring Strategies in Vitamin D Deficiency State
Condition: Vitamin D Deficiency
Interventions: Drug: Vitamin D3 600,000 units IM;   Drug: Vitamin D3 600,000 Orally;   Drug: Vitamin D3 200,000 units IM;   Drug: Vitamin D3 200,000 Orally
7 Recruiting Bioavailability and Biological Effects of Vitamin D2 Contained in Mushroom
Conditions: Vitamin D Deficiency;   Metabolic Syndrome;   Prediabetes
Interventions: Dietary Supplement: Mushroom fortified with 600 IU of vitamin D2;   Dietary Supplement: Mushroom fortified with 4000 IU of vitamin D2;   Dietary Supplement: Commercially available Vitamin D3 (600 IU) supplement;   Dietary Supplement: Commercially available Vitamin D3 (4000 IU) supplement
8 Active, not recruiting Randomized Trial: Maternal Vitamin D Supplementation to Prevent Childhood Asthma (VDAART)
Condition: Asthma
Interventions: Dietary Supplement: Vitamin D 3 cholecalciferol;   Dietary Supplement: Vitamin D3
9 Recruiting The Effects of Vitamin E and Vitamin C and Exercise
Condition: Exercise and Non-exercise Effect Upon Vitamins E and C
Interventions: Dietary Supplement: Vitamin E and Vitamin C;   Drug: placeboes
10 Completed Vitamin D and Genetics in Nutritional Rickets
Condition: Nutritional Rickets
Interventions: Dietary Supplement: Vitamin D + Calcium;   Dietary Supplement: Calcium;   Dietary Supplement: Vitamin D2;   Dietary Supplement: Vitamin D3
11 Recruiting Assessment of Vitamin D Supplementation and Immune Function
Condition: Vitamin D Deficiency
Interventions: Dietary Supplement: Vitamin D - Treatment 1;   Dietary Supplement: Vitamin D - Treatment 2;   Dietary Supplement: Vitamin D - Treatment 3
12 Completed Comparison of Efficacy of Different Dosages Vitamin K2
Conditions: Carboxylation Level;   Vitamin K-dependent Proteins
Interventions: Dietary Supplement: placebo;   Dietary Supplement: vitamin K1;   Dietary Supplement: vitamin K2
13 Completed Dose-Finding Study for Vitamin K2 in Human Volunteers
Condition: Vitamin K-Status
Interventions: Dietary Supplement: no vitamin K;   Dietary Supplement: 10 mcg Vitamin K for 3 months daily;   Dietary Supplement: 20 mcg Vitamin K for 3 months daily;   Dietary Supplement: 45 mcg Vitamin K for 3 months daily;   Dietary Supplement: 90 mcg Vitamin K for 3 months daily;   Dietary Supplement: 180 mcg Vitamin K for 3 months daily;   Genetic: 360 mcg Vitamin K for 3 months daily
14 Completed Vitamin D Supplement Study for Adolescents
Conditions: Vitamin D Deficiency;   Overweight;   Obesity
Interventions: Dietary Supplement: 2000 IU Vitamin D3 daily supplement;   Dietary Supplement: 400 IU Vitamin D3 supplement
15 Unknown † Vitamin D Replacement After Kidney Transplant
Conditions: Kidney Transplantation;   Vitamin D Deficiency
Intervention: Dietary Supplement: vitamin D3
16 Completed
Has Results 		Comparison of Efficacy of Vitamin D and Vitamin D-calcium Fortified Yogurt Drink in Diabetic Patients
Condition: Type 2 Diabetes
Interventions: Dietary Supplement: plain yogurt drink;   Dietary Supplement: vitamin D fortified yogurt drink;   Dietary Supplement: vitamin D-calcium yogurt drink
17 Active, not recruiting The Effects of Vitamin B-6 Status on Homocysteine, Oxidative Stress, One-carbon Metabolism and Methylation: Cross-section, Case-control, Intervention and Follow-up Studies in Colorectal Cancer
Condition: Colorectal Cancer
Interventions: Dietary Supplement: Vitamin C;   Dietary Supplement: Vitamin B6;   Dietary Supplement: Folic acid;   Dietary Supplement: Vitamin B6 plus folic acid
18 Recruiting Efficacy of Natural Vitamin E Tocotrienol on the Treatment of Surgical Scars
Condition: Scar
Interventions: Other: both oral placebo and topical cream placebo;   Other: oral placebo and topical tocotrienol;   Other: Oral vitamin E supplement and topical cream placebo;   Other: Oral vitamin E supplement and topical vitamin E cream;   Other: Oral placebo & topical cream placebo & vitamin-E cream;   Other: Oral vitamin-E supplement & cream placebo & vitamin-E cream
19 Recruiting Magnitude of Changes in 25 OH Vitamin D3 Levels After Vitamin D3 Supplementation
Condition: Vitamin D Deficiency
Interventions: Drug: vitamin D3 1000 IU orally daily for 5 months;   Drug: vitamin D3 3000 IU orally daily for 5 months;   Drug: vitamin D3 5000 IU orally daily for 5 months;   Drug: Placebo orally daily for 5 months
20 Recruiting Vitamin D Supplementation and Metabolism in Vitamin D Deficient Elderly
Conditions: Vitamin D Deficiency;   Metabolic Syndrome
Interventions: Dietary Supplement: RDA Vitamin D3 only;   Dietary Supplement: Vitamin D2/3 Repletion only;   Other: Vitamin D2/3 Repletion + AEX;   Other: Vitamin D2/3 Repletion + RT

Previous Page Studies Shown (1-20) Next Page (21-40)
† Indicates status has not been verified in more than two years
Save this search by bookmarking this page.
When you use your bookmark, the search will be performed again on the most recent collection of studies.
RSS Feeds for studies found by your search that were:
  First received in the last 14 days,  
  Last updated (includes received) in the last 30 days
  Download Options




Contact Help Desk
Lister Hill National Center for Biomedical Communications,  U.S. National Library of Medicine,
U.S. National Institutes of Health,  U.S. Department of Health & Human Services,
USA.gov,  Copyright,  Privacy,  Accessibility,  Freedom of Information Act

U.S. National Institutes of Health U.S. National Library of Medicine U.S. Department of Health & Human Services