Vitamin D3 Supplementation in Pediatric IBD: Weely vs Daily Dosing Regimens

Study Overview
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Brief Summary
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The purpose of this prospecitve randomized controlled trial is to compare effectiveness and patient/family adherence of weekly or daily Vitamin D-3 dosing regimens in children with Inflammatory Bowel Disease (IBD) who are 25-hydroxyvitamin D [25(OH)D] insufficient or deficient. The primary aim of this pilot study is to evaluate the effectiveness of once weekly verses daily D-3 dosing regimens based on the most current IBD supplementation guidelines in improving 25(OH)D levels. A seconary aim is to determine if there is difference in adherence between dosing regimns.

Conditions
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Inflammatory Bowel Disease (IBD)

Intervention / Treatment
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* Dietary Supplement: Vitamin D-3


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Subjects aged 5 to 17 years with a diagnosis of Inflammatory Bowel Disease, who have a 25(OH)D level below 30 ng/ml within 2 weeks of enrollment Subject/family must be able and willing to take oral medications, complete a 3 day dietary record, and return for 8 week concluding visit or clinicl visit Exclusion Criteria: Subjects will not be eligible if they are intolerant of vitamin supplementation or any ingredients in the chosen supplment, are unable or unwilling to take oral supplements, or are on specific medical therapy for diminished bone mineral density Children with parathryoid disease, granulomatous disorders or William's syndrome will also be excluded from the study

Ages Eligible for Study
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Minimum Age: 5 Years
Maximum Age: 17 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Insufficient Group<br>D-3 Chewable Wafer - 14,000 IU/wafer weekly Vitamin D-3 Caps - 2,000 IU/Cap daily Vitamin D-3 Liquid - 5,000 IU/ml (0.4) ml daily | Dietary Supplement: Vitamin D-3<br>* Children with IBD, aged 5 to 17, who are vitamin D insufficient or deficient will be recruited at the time of a routine clinic visit or lab draw that included a 25(OH)D level as part of clinical practice/standard care. Once consent and assent are obtained, the children who are 25-hydroxyvitamin D [259OH)D] insufficient or deficient will be randomly assigned to a daily or weekly dosing regimen using block randomization to ensure equal group size.<br>|
| Deficient Group<br>D-3 Chewable Wafer - 50,000 IU/wafer weekly Vitamin D-3 Liquid - 5,000 IU/ml daily | Dietary Supplement: Vitamin D-3<br>* Children with IBD, aged 5 to 17, who are vitamin D insufficient or deficient will be recruited at the time of a routine clinic visit or lab draw that included a 25(OH)D level as part of clinical practice/standard care. Once consent and assent are obtained, the children who are 25-hydroxyvitamin D [259OH)D] insufficient or deficient will be randomly assigned to a daily or weekly dosing regimen using block randomization to ensure equal group size.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| 25 \(OH)D level will be recorded at baseline and at 8 weeks as an absolute value (ratio data) and the percentage and direction (increase or decrease) of change between baseline and end of treatment level. |  | 8 weeks |