Not applicableStudy completedNCT06266702What this trial is testingEvaluation of a Nutritional Technology for Vitamin D AbsorptionWho this might be right forNutrition, Healthy Abbott Nutrition 26
Not applicableStudy completedNCT00472654What this trial is testingThe Effect of Vitamin D Supplementation During Caloric Restriction on Intestinal Calcium AbsorptionWho this might be right forWeight LossVitamin D or Placebo Rutgers University 83
Not applicableStudy completedNCT06721637What this trial is testingEffect of Core Stability Exercise Versus Whole Body Vibration in Improving Vitamin D Absorption in WomenWho this might be right forVitamin D Absorption October 6 University 40
Large-scale testing (Phase 3)Study completedNCT00570934What this trial is testingSupplementation With Vitamin D, Calcium or Both on Calcium Absorption and Bone Mineral Content in Children With JRAWho this might be right forJuvenile Rheumatoid Arthritis University of Missouri-Columbia 24
Not applicableActive Not RecruitingNCT05898217What this trial is testingVitamin and Mineral Absorption From Milk and PBMAsWho this might be right forNutritionHealthy Clinical Nutrition Research Center, Illinois Institute of Technology 60
Post-approval studies (Phase 4)Study completedNCT01880346What this trial is testingComparison of Absorption of Vitamin D in Cystic FibrosisWho this might be right forCystic Fibrosis Emory University 17
Not applicableStudy completedNCT00393289What this trial is testingCalcium Absorption and Retention From Marine ProductsWho this might be right forCalcium Metabolism University of Copenhagen 12
Not applicableUnknownNCT03108222What this trial is testingPhosphorus Absorption in Healthy Adults and in Patients With Moderate Chronic Kidney DiseaseWho this might be right forChronic Kidney Disease Mineral and Bone Disorder Purdue University 20
Not applicableStudy completedNCT02714361What this trial is testingInvestigate the Effect of Vitamin D3 Supplementation on Iron Status in Iron Deficient WomenWho this might be right forIron DeficiencyAnemia; Deficiency, Nutritional, With Poor Iron AbsorptionVitamin D Deficiency University of Chester 50
Post-approval studies (Phase 4)Study completedNCT00581828What this trial is testingDoes Treatment of Hypovitaminosis D Increase Calcium Absorption?Who this might be right forOsteoporosisOsteopeniaVitamin D Deficiency+3 more University of Wisconsin, Madison 19
Not applicableStudy completedNCT05706259What this trial is testingA Comparative Dissolution and Absorption Study of an Orodispersible Powder, Chewable Tablet and Soft Gel Capsule Vitamin D3 SupplementationWho this might be right forVitamin D Deficiency Liaquat University of Medical & Health Sciences 40
Post-approval studies (Phase 4)Looking for participantsNCT07791797What this trial is testingSupplementation Absorption ComparisonWho this might be right forHealthy Volunteer RDC Clinical Pty Ltd 160
Not applicableStudy completedNCT02100774What this trial is testingEffect of Genetic Variants on Fat-soluble Vitamin BioavailabilityWho this might be right forBiological Availability of Vitamins and Micronutrients Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement 45
Not applicableStudy completedNCT04885803What this trial is testingVitamin D Absorbance Study - Clinical Trial of the Absorbance of Nano Liquid D3Who this might be right forVitamin D Deficiency Inspired Life Medical, Inc. 114
Not applicableStudy completedNCT00868738What this trial is testingEvaluation of Calcium, Vitamin D, Magnesium, and Zinc Absorption in ChildrenWho this might be right forMineral Absorption Baylor College of Medicine 60
Not applicableStudy completedNCT04019379What this trial is testingCalcium and Phosphorus Whole-Body Balance and Kinetics in Patients With Moderate Chronic Kidney DiseaseWho this might be right forPhosphorus and Calcium DisordersChronic Kidney Disease Mineral and Bone DisorderChronic Kidney Diseases University of Minnesota 3
Early research (Phase 1)Study completedNCT00641771What this trial is testing4-Week Study to Assess the Effect of Alendronate and Vitamin D3 Once Weekly on Fractional Calcium Absorption in Postmenopausal Osteoporotic Women (0217A-230)Who this might be right forOsteoporosis Organon and Co 56
Post-approval studies (Phase 4)Study completedNCT00257920What this trial is testingZemplar® Injection and Hectorol® Injection on Intestinal Absorption of Calcium in Chronic Kidney DiseaseWho this might be right forChronic Kidney Disease, Stage 5Secondary Hyperparathyroidism Abbott 41
Post-approval studies (Phase 4)Study completedNCT02234544What this trial is testingEffect of an Inhibitor of Cholesterol Absorption on Vitamin D LevelsWho this might be right forVitamin D Deficiency Federal University of Rio Grande do Sul 52
Not applicableStudy completedNCT00968734What this trial is testingVitamin D Status After Single Oral Dose of Cholecalciferol in Low Fat Meal Compared to High-fat MealWho this might be right forDeficiency, Vitamin D Federal University of Rio Grande do Sul 30