Clinical trialNCT06406543CompletedInterventional

Vitamin D in Armenia: Vitamin D Repletion Strategies With Dibase, and Vitamin D and Vitamin D Binding Protein and COVID

SponsorColumbia UniversityEnrollment77Vitamin D Deficiency

View the registry record on ClinicalTrials.gov

Summary

The lay summary the sponsor registered on ClinicalTrials.gov.

This is a three-arm unblinded prospective interventional study of vitamin D supplementation in participants with insufficient vitamin D at three different induction and maintenance dosing regimens (high dose, low frequency; medium dose, medium frequency, and low dose, high frequency). Measurements of serum vitamin D will take place at 4, 8, 12, 24, and 36 weeks, and will be compared to determine which regimen was most effective at achieving and maintaining ideal serum vitamin D levels.

clinicaltrials.gov ↗

Investigators

The overall officials registered on this study. Names that resolve to a findmyKOL profile link to it; the rest are shown as registered.

John Bilezikian, MD
Professor of Medicine
Principal InvestigatorKOL profile →
clinicaltrials.gov ↗

A profile link is shown only when the registered name resolves to a person record with a confident, namesake-checked match; ambiguous names stay unlinked.

Sites

1 registered facility, with the per-site recruitment status where the registry publishes one. ClinicalTrials.gov does not publish per-site enrollment counts.

Armenia

Osteoporosis Center of Armenia
Yerevan, Armenia

Site investigator names are published by ClinicalTrials.gov only while a study recruits, so completed studies list sites without them.

Drugs studied

No drug or biological interventions are in our data for this study. It may test a procedure, device or behavioral intervention, or the intervention list isn't in our current snapshot. See the registry record ↗. Why? →

Registration & key dates

Registry attributes as recorded on the ClinicalTrials.gov study record.

Start: 1 Dec 2023
Primary completion: 28 Oct 2024
Completion: 28 Oct 2024
Last update posted: 27 Apr 2025
Registered enrollment: 77
Registry id: NCT06406543

clinicaltrials.gov ↗

Source: ClinicalTrials.gov, via the CTTI AACT database, data as of 24 Aug 2026. Registry facts are shown as registered by the study sponsor; findmyKOL does not interpret them.