| Vitamin D Dose-Response Study to Establish Dietary Requirements in Infants (NCT00381914) | McGill University | 2007-03-01 |
| Effect of Vitamin D Supplementation on Health of Low Birth Weight Infants (NCT00415402) | Delhi University | 2007-03-01 |
| Clinical Approaches to Correcting Vitamin D Inadequacy and Maintaining Adequacy (NCT00692120) | University of Wisconsin, Madison | 2007-02-01 |
| Vitamin D Deficiency in Obese Adolescent Girls and Influence of Vitamin D on Insulin Secretion and Sensitivity (NCT00850694) | University of Alabama at Birmingham | 2007-02-01 |
| Vitamin D Status of Pregnant Women and Their Children in Eau Claire, South Carolina (NCT00412087) | Medical University of South Carolina | 2007-01-01 |
| Effect of Vitamin D Deficiency and Vitamin D Supplementation on Glucose Metabolism (NCT00749918) | University of Minnesota | 2007-01-01 |
| Availability of Vitamin D in Orange Juice (NCT01778114) | Boston University | 2006-12-01 |
| The Pharmacokinetics of a Single Large Dose of Vitamin D3 (NCT00473239) | Creighton University | 2006-10-01 |
| Prevention of Vitamin D Deficiency (NCT00494104) | Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) | 2006-09-01 |
| Establishing the Vitamin D Requirements During Lactation (NCT00412074) | Medical University of South Carolina | 2006-08-01 |
| Vitamin D Deficiency, Insulin Resistance and FGF-23 (NCT00491322) | Massachusetts General Hospital | 2006-05-01 |
| Vascular Risk After Kidney Transplantation (NCT00374595) | University of Nebraska | 2006-04-01 |
| Vitamin D Deficiency in Elderly African American Women in Central Texas (NCT01971411) | McLennan County Medical Education and Research Foundation | 2006-03-01 |
| Characterization of Hyperparathyroidism and Vitamin D Deficiency in Obesity (NCT00288873) | Weill Medical College of Cornell University | 2006-02-01 |
| The Prevalence of Vitamin D Deficiency and Effects of Vitamin D Supplementation in HIV-1 Infected Patients (NCT00306410) | Radboud University Medical Center | 2006-01-01 |
| Cholecalciferol (Vitamin D3) Therapy in Chronic Kidney Disease (CKD) Subjects (NCT00427037) | Atlanta VA Medical Center | 2005-12-01 |
| Vitamin D Levels and Vitamin D Education in Geriatric Patients (NCT00273611) | University of Colorado, Denver | 2005-12-01 |
| A Study to Assess the Effectiveness of an Investigational Drug in Elderly Subjects With Low Vitamin D Levels (0822A-009) (NCT00242476) | Merck Sharp & Dohme LLC | 2005-09-01 |
| Does Treatment of Hypovitaminosis D Increase Calcium Absorption? (NCT00581828) | University of Wisconsin, Madison | 2005-01-01 |
| A Randomized Controlled Trial Testing The Effect Of A Multi-Nutrient Fortified Juice (NCT01909063) | Boston University | 2005-01-01 |
| Optimizing Vitamin D Nutrition in Healthy Adults (NCT00327847) | Winthrop University Hospital | 2004-12-01 |
| Nursing-Home Residents Given Bread Fortified With Vitamin D3 (NCT00789503) | University of Toronto | 2004-11-01 |
| A Study of MK0217A and Dietary Supplement in Men and Postmenopausal Women With Osteoporosis (0217A-227) (NCT00092079) | Merck Sharp & Dohme LLC | 2004-01-01 |
| Evaluation of Vitamin D Requirements During Pregnancy (NCT00292591) | Medical University of South Carolina | 2004-01-01 |
| A Study to Evaluate the Safety, Tolerability, and Efficacy of an Investigational Drug and Dietary Supplement in Men and Postmenopausal Women With Osteoporosis (0217A-227) (NCT00092066) | Organon and Co | 2003-09-24 |
| Vitamin D Administration in the Nursing Home (NCT00204919) | University of Wisconsin, Madison | 2001-06-01 |
| The Effect of Vitamin D on Bone Accretion and Turn-Over in Young Girls (NCT00267540) | University of Copenhagen | 2001-01-01 |