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Found 665 studies with search of: Cholecalciferol OR Ergocalciferol
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Rank Status Study
1 Recruiting Effect of Vitamin D Oral Supplements on 25 OH Vitamin D Levels
Condition: Vitamin D Deficiency
Interventions: Drug: ergocalciferol 2000 IU orally, daily;   Drug: ergocalciferol 25000 IU oraly every 2 weeks;   Drug: ergocalciferol 50000 IU orally every 4 weeks;   Drug: ergocal1000 IU & cholecal 1000 IU orally daily;   Drug: cholecalciferol 2000 IU orally daily;   Drug: Cholecalciferol 25000 IU orally every 2 weeks;   Drug: Cholecalciferol 50000 orally every 4 weeks;   Drug: placebo orally everyday
2 Not yet recruiting Safety and Bioefficacy of Vitamin D2 and Vitamin D3
Condition: Vitamin D Deficiency
Interventions: Dietary Supplement: cholecalciferol;   Dietary Supplement: ergocalciferol;   Dietary Supplement: Placebo
3 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
4 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
5 Completed Clinical Approaches to Correcting Vitamin D Inadequacy and Maintaining Adequacy
Conditions: Vitamin D Inadequacy;   Vitamin D Deficiency
Interventions: Dietary Supplement: Cholecalciferol (vitamin D3);   Dietary Supplement: Ergocalciferol (vitamin D2);   Dietary Supplement: Placebo
6 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
7 Recruiting Vitamin D Supplement Study for Stage Three and Four Chronic Kidney Disease (CKD) Patients
Condition: Chronic Kidney Disease Stage 3 and 4
Interventions: Drug: Ergocalciferol;   Drug: Cholecalciferol
8 Active, not recruiting Study Comparing Two Isoforms of Vitamin D Supplements for Infants
Condition: Healthy
Intervention: Dietary Supplement: Cholecalciferol (D3) or ergocalciferol (D2)
9 Unknown † Vitamin D Levels in Children With IBD
Conditions: Inflammatory Bowel Disease;   Crohn's Disease;   Ulcerative Colitis
Interventions: Dietary Supplement: ergocalciferol;   Dietary Supplement: Cholecalciferol
10 Completed Relative Efficacy of Vitamins D2 and D3 in Adult Humans
Condition: Healthy
Interventions: Dietary Supplement: vitamin D2;   Dietary Supplement: vitamin D3
11 Active, not recruiting Health Benefits of Vitamin D and Calcium in Women With PCOS (Polycystic Ovarian Syndrome)
Conditions: Polycystic Ovarian Syndrome;   Vitamin D Deficiency
Interventions: Dietary Supplement: Vitamin D2 (Ergocalciferol);   Drug: Medroxyprogesterone (Provera);   Dietary Supplement: Vitamin D3 (Cholecalciferol);   Dietary Supplement: Elemental Calcium
12 Completed Improving Vitamin D Status In Cystic Fibrosis
Condition: Cystic Fibrosis
Interventions: Drug: ergocalciferol (vitamin D2);   Device: Sperti Del Sol Lamp;   Drug: Vitamin D3
13 Unknown † Evaluation of Vitamin D Status in Children With Acute Burns
Conditions: Burns;   Bone Demineralization
Interventions: Dietary Supplement: Vitamin D2;   Dietary Supplement: Vitamin D3
14 Not yet recruiting A Pilot Study of the Effect of Dietary Fat Type and Amount on Vitamin D3 Absorption
Condition: Vitamin D Deficiency
Intervention: Dietary Supplement: cholecalciferol
15 Recruiting Safety and Immunologic Effect of Low Dose Versus High Dose Vitamin D3 in Multiple Sclerosis
Conditions: Multiple Sclerosis;   Vitamin D Deficiency
Intervention: Dietary Supplement: Cholecalciferol
16 Unknown † Vitamin D Status of Pregnant Women and Their Children in Eau Claire, South Carolina
Conditions: Vitamin D Deficiency;   Pregnancy
Interventions: Drug: cholecalciferol (vitamin D3);   Drug: cholecalciferol
17 Completed Vitamin D3 Supplementation in Participants Diagnosed With Early-Stage Prostate Cancer Who Decide to Undergo Active Surveillance Treatment Regimen.
Condition: Prostate Cancer
Intervention: Dietary Supplement: cholecalciferol
18 Completed Pilot Pharmacokinetic Study of Daily Versus Monthly High-Dose Cholecalciferol Supplementation
Condition: Healthy Volunteers
Interventions: Dietary Supplement: Single High Dose Cholecalciferol;   Dietary Supplement: Daily Dose Cholecalciferol
19 Active, not recruiting Prospective Study of Efficacy of Intra-muscular Vitamin D3 in Tropical Calcific Pancreatitis
Conditions: Pancreatitis, Chronic;   Pancreatitis, Tropical
Intervention: Drug: Vitamin D3 (Cholecalciferol)
20 Recruiting Cholecalciferol in Treating Patients With Acute Myeloid Leukemia Undergoing Intensive Induction Chemotherapy
Conditions: Adult Acute Megakaryoblastic Leukemia (M7);   Adult Acute Monoblastic Leukemia (M5a);   Adult Acute Monocytic Leukemia (M5b);   Adult Acute Myeloblastic Leukemia With Maturation (M2);   Adult Acute Myeloblastic Leukemia Without Maturation (M1);   Adult Acute Myeloid Leukemia With 11q23 (MLL) Abnormalities;   Adult Acute Myeloid Leukemia With Del(5q);   Adult Acute Myeloid Leukemia With Inv(16)(p13;q22);   Adult Acute Myeloid Leukemia With t(16;16)(p13;q22);   Adult Acute Myeloid Leukemia With t(8;21)(q22;q22);   Adult Acute Myelomonocytic Leukemia (M4);   Adult Erythroleukemia (M6a);   Adult Pure Erythroid Leukemia (M6b);   Untreated Adult Acute Myeloid Leukemia
Interventions: Dietary Supplement: cholecalciferol;   Other: pharmacological study;   Other: laboratory biomarker analysis

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† Indicates status has not been verified in more than two years
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