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Clinical trialNCT01173848TerminatedPhase 3Interventional

Vitamin D Supplement Study for Stage Three and Four Chronic Kidney Disease (CKD) Patients

SponsorThe Cleveland ClinicEnrollment19Chronic Kidney Disease Stage 3 and 4
View the registry record on ClinicalTrials.gov

Summary

The lay summary the sponsor registered on ClinicalTrials.gov.

The purpose of this study is to examine the effectiveness of vitamin D3 versus vitamin D2 in raising vitamin D levels and suppressing parathyroid hormone levels in patients with kidney disease who are not on dialysis.
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.

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.

United States
  • Cleveland Clinic

    Cleveland, Ohio, United States

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

Drugs studied

The drug and biological interventions registered on this study, normalized to their RxNorm ingredient where possible.

CholecalciferolErgocalciferol →
Linked drugs open the directory filtered to KOLs working with them.clinicaltrials.gov ↗

Registration & key dates

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

Start
31 Jul 2010
Primary completion
30 Sept 2011
Completion
18 Oct 2011
Last update posted
4 Apr 2017
Registered enrollment
19
Registry id
NCT01173848
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.