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Background  Vitamin D deficiency with all its consequences is a global health problem.    Case Presentation  We reported a 62-year-old Caucasian woman with alcohol-related liver cirrhosis (Child class A) and a medical history of Billroth II surgery. Although she has taken an oral dose of 16 800 IU vitamin D daily for six weeks to normalise her 25-hydroxyvitamin D level the raise was only moderate.    Conclusion  High-dose oral or parenteral vitamin D therapy is necessary to gain sufficient 25-hydroxyvitamin D serum levels in patients following gastric surgery.

Vitamin D deficiency following Billroth II surgery - How much vitamin D is enough?: a case report