U.S., Jan. 6 -- ClinicalTrials.gov registry received information related to the study (NCT07317830) titled 'Effects of Different Vitamin D3 Formulations in Vitamin D-Deficient Adults' on Dec. 12, 2025.
Brief Summary: This randomized controlled superiority pilot trial will evaluate the efficacy of two vitamin D3 formulations administered over eight weeks in adults with subclinical or clinical vitamin D deficiency. The study will compare changes in serum 25-hydroxyvitamin D concentrations between formulations, as well as the proportion of participants who will achieve vitamin D sufficiency. Both formulations are expected to improve vitamin D status, with the hypothesis that one formulation will demonstrate superior bioavailability, resulting...