The Variability of 25-hydroxyvitamin D Response From Crystalline 25-hydroxyvitamin D3

Withdrawn before enrolling · Not applicable

Conditions studied: Vitamin D Deficiency

In brief

The investigators hypothesize that native vitamin D will have more variability in 25(OH)D dose response when compared to a given equipotent dose of 25-hydroxyvitamin D3. This will be a single blind, active control, pharmacokinetic study of 625 μg 25(OH)D given orally or 2500 μg native vitamin D given orally.

Key facts

Study ID

NCT01633658

Run by

Creighton University

People needed

0

Starts

2012-11-01

Expected to finish

2013-11-01

Last updated by the study team

2013-05-29

Who can join

Age: 20 and older, up to 60. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• Ten men and women in each group,
• aged 20-60.

You may not qualify if…

• History of hypercalcemia,
• vitamin D supplement use > 800 IU daily,
• BMI > 30,
• gastrointestinal malabsorption (from celiac sprue, colitis, surgery, etc.), kidney disease or liver disease,
• use of steroids in any form,
• anticonvulsants,
• antibiotics,
• acute illness, or
• vacation planned to "sunny climate"

Where it is running

• Creighton University — Omaha, Nebraska, United States

Full record on ClinicalTrials.gov

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