Pharmacokinetics of Calcifediol and Cholecalciferol

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.

Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

93 participants

Study Classification

INTERVENTIONAL

Study Start Date

2014-11-30

Study Completion Date

2015-12-31

Brief Summary

Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.

The investigators are intending to perform a clinical study in healthy subjects on the pharmacokinetics of different doses of Hy.D Calcifediol compared to vitamin D3 (cholecalciferol) in order to gain insight into the dose response relationship and to assess kinetic differences including the steady state. The metabolites 1,25(OH)2D, 24,25(OH)2D will be assessed throughout the study to assess the metabolism of vitamin D vs. 25(OH)D. Vitamin D3 will be measured throughout the study to assess compliance with the restriction of exogenous vitamin D supplementation.

Related Clinical Trials

Explore similar clinical trials based on study characteristics and research focus.

Dose Finding Study in Physically Frail Elderly to Measure 25(OH) Vitamin D Levels After Supplementation With Hy.D Calcifediol 25 SD/S and Vitamin D3

NCT01868945

Pre-frail Elderly Frail Elderly

COMPLETED PHASE1

Pilot Pharmacokinetic Study of Daily Versus Monthly High-Dose Cholecalciferol Supplementation

NCT01079923

Healthy Volunteers

COMPLETED NA

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

NCT01633658

Vitamin D Deficiency

WITHDRAWN NA

A Prospective Open-label Comparison of Two Vitamin D3 Repletion Strategies in Vitamin D Deficient Patients

NCT01650883

Vitamin D 25 OH Deficiency

COMPLETED NA

Effects of Vitamin D3 Versus 25OHD3 on Mineral Metabolism and Immune Function

NCT02091219

Vitamin D Deficiency

COMPLETED EARLY_PHASE1

Detailed Description

Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.

Reaching consistent levels of 25(OH)D has been shown to be crucial in decreasing falls, fractures and increasing calcium absorption. One way to circumvent the variability of 25(OH)D response to vitamin D might be to use calcifediol supplementation and bypass the 25-hydroxylase enzyme entirely. This approach also permits the physician to achieve desired serum levels in a matter of just a few days, rather than the several weeks required when using native vitamin D. Compared to native vitamin D, calcifediol is more water soluble, has a shorter half-life and increases 25(OH)D levels more quickly. Calcifediol is also more potent, about 3.5 times more potent in raising 25(OH)D levels than vitamin D. Its water solubility may also confer an advantage in patients who have difficulty absorbing fat soluble vitamins. This form of vitamin D metabolite has been used historically to increase calcium absorption, treat osteomalacia, and increase Bone Mineral Density (BMD). Using calcifediol seems to be a practical solution, but little is known about the dose response variability in humans and how it compares to that of native vitamin D. The investigators are intending to perform a clinical study in healthy subjects on the pharmacokinetics of different doses of Hy.D Calcifediol compared to vitamin D3 (cholecalciferol) in order to gain insight into the dose response relationship and to assess kinetic differences including the steady state. The metabolites 1,25(OH)2D, 24,25(OH)2D will be assessed throughout the study to assess the metabolism of vitamin D vs. 25(OH)D. Vitamin D3 will be measured throughout the study to assess compliance with the restriction of exogenous vitamin D supplementation.

Conditions

See the medical conditions and disease areas that this research is targeting or investigating.

Osteoporosis

Study Design

Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.

Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Investigators

Study Groups

Review each arm or cohort in the study, along with the interventions and objectives associated with them.