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Study identifier: NCT07317830 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

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

Condition: Vitamin D Deficiency  ·  Sponsor: Center for Health Sciences, Serbia

PhaseNA
Planned participants20
Who can joinAll sexes, 18 Years to 80 Years
Healthy volunteersYes

About this study

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.

This description comes directly from the study's public registry record.

Talk to the study team

Sergej Ostojic, MD, PhD  ·  +381112643242  ·  sergej.ostojic@chess.edu.rs

Always discuss trial participation with your own doctor first.

Locations (1)

Center for Health SciencesBelgrade, SerbiaRecruiting

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Source record: clinicaltrials.gov/study/NCT07317830