Vitamin D Substitution During Winter Time

Optimal Substitution Dose of the Vitamin D During Winter Time in Patient With Inflammatory Bowel Diseases (IBD)

The purpose of this study is to confirm anticipated substitution dose of the vitamin D for sustained blood level during winter time in patients with inflammatory bowel diseases (IBD)

Vitamin D substitution is widely recommended. Suggested substitution doses are increasing over the time. No exact body requirement is known for patients with IBD at present. Aim of the study was to confirm substitution dose obtained from model.

Inclusion Criteria:

• Subjects with inflammatory bowel disease

Exclusion Criteria:

• Liver disease
• Renal disease
• Hypercalcemia
• Hyperparathyreoidism
• Chronic pancreatitis
• Concomitant vitamin D medication
• Pregnancy
• Sarcoidosis
• Malignancy
• Inability to obtain valid data from subject