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We compare the effect of HyD (25-hydroxyvitamin D) and vitamin D3 in their effect on 25-hydroxyvitamin D plasma levels over a course of 4 month. This is a pharmacokinetic study including 35 postmenopausal women.
We include postmenopausal women age 50 to 75, race/ethnicity: Caucasian, serum 25(OH)D at baseline between 20 to 60 nmol/l, body mass index: < 30 kg/m2
to compare 25(OH)D and vitamin D3 in equimolar doses over a 4 month pharmacokinetic trial. The dosing arms are daily, weekly, and bolus
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| 1 | Active Comparator | 25(OH)D |
|
| 2 | Active Comparator | vitamin D3 |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| 25(OH)D | Drug | daily (20ug), weekly (140 ug), Bolus (140 ug) |
|
|
| Measure | Description | Time Frame |
|---|---|---|
| serum 25(OH)D levels | repeated assessments over 4 months |
| Measure | Description | Time Frame |
|---|---|---|
| muscle strength, blood pressure, blood glucose, bone markers | repeated assessments over 4 months |
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Inclusion criteria:
Exclusion criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Heike Bischoff Ferrari, MD, MPH | University Hospital Zurich, Centre on Aging and Mobility | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University Hospital Zurich, Centre on Aging and Mobility | Zurich | Canton of Zurich | 8091 | Switzerland |
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| ID | Term |
|---|---|
| D002762 | Cholecalciferol |
| ID | Term |
|---|---|
| D002782 | Cholestenes |
| D002776 | Cholestanes |
| D013256 | Steroids |
| D000072473 | Fused-Ring Compounds |
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| vitamin D3 | Dietary Supplement | daily (800 IU), weekly (5600 IU), Bolus (5600 Iu) |
|
|
| D011083 |
| Polycyclic Compounds |
| D013261 | Sterols |
| D014807 | Vitamin D |
| D012632 | Secosteroids |
| D008563 | Membrane Lipids |
| D008055 | Lipids |