A Randomized, Double-blind, Placebo-controlled Study on Oral Vitamin D Megadoses - 100 000 or 200 000 IU Vitamin D3 Every Three Months
A Randomized, Double-blind, Placebo-controlled Study on Oral Vitamin D Megadoses - 100 000 or 200 000 IU Vitamin D3 Every Three Months
The purpose of this study is to determine if infrequent administration of oral vitamin D megadoses is effective treatment to maintain serum 25-hydroxyvitamin D(3) above target levels of 50-75 nmol/L. The investigators hypothesize that 100 000 IU or at least 200 000 IU vitamin D3 in every three months would be effective and safe treatment to achieve the target levels.
Inclusion Criteria:
Exclusion Criteria: