Clinical Research Directory

Effects of Different Vitamin D3 Formulations in Vitamin D-Deficient Adults

Sponsor: Center for Health Sciences, Serbia

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 in greater and faster increases in circulating 25-hydroxyvitamin D. The findings will provide preliminary evidence to inform formulation selection and dosing strategies for correcting vitamin D deficiency and will support the design of larger, confirmatory trials.

Official title: The Effects of Eight Weeks of Supplementation With Two Vitamin D₃ Formulations in Adults With Subclinical and Clinical Vitamin D Deficiency: A Randomized Controlled Superiority Pilot Trial

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