Vitamin d solution holder and containers for transfusions

The present invention relates to a polyolefin-made holder for a vitamin D solution, which minimizes reduction in vitamin D content, and to a transfusion fluid container that accommodates the holder. The present invention relates to a polyolefin-made holder for solutions containing vitamin D or derivatives thereof, in which the volume of polyolefin constituting a solution-holding portion of the holder is 30 cmor less per mol of the vitamin D or derivatives thereof contained therein; and to a transfusion fluid container comprising the vitamin D solution holder. Use of the holder or container can minimize reduction in vitamin D content.