Vitamin d showdown: which pill works best?

NCT ID NCT07317830

First seen Jan 08, 2026 · Last updated Apr 22, 2026 · Updated 14 times

Summary

This small pilot study aims to find out if one of two vitamin D3 supplement formulas works better than the other at raising vitamin D levels in the blood. Researchers will enroll 20 adults with low vitamin D levels and give them one of the two formulas for eight weeks. The goal is to see which supplement helps more people reach sufficient vitamin D levels and does so faster, to help guide future treatment choices.

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Contacts and locations

Study contacts

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

Locations

  • Center for Health Sciences

    RECRUITING

    Belgrade, 11000, Serbia

    Contact

    Contact Phone: •••-•••-•••• Email: •••••@•••••

Conditions

Explore the condition pages connected to this study.